DO THE TON

Blood Sweat Tears and Grease => Projects => Trackers => Topic started by: MotorbikeBruno on Nov 25, 2012, 16:46:34

Title: 71' CB500 monoshock with no name...O2 sensor success!
Post by: MotorbikeBruno on Nov 25, 2012, 16:46:34
I suppose I'll start a thread on this poor bike I picked up.  Got her for a steal, without a title, but called before I picked it up to ask about the VIN. Free and clear, title in my hand and name. Time to get to work.  Cleaned out the carbs, got her running, ran her around the block and through all the gears, no issues so the teardown begins.  Here's where I started, and where I'm at.

Here's how I got her!
(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/2rightside.jpg)

Running now...
(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/7runningfirsttime.jpg)

HAD TO CHANGE THE PAINT COLOR OF THAT TANK! (and fix the dents etc...)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/12Teardown1.jpg)

Getting down to the business...
(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/11Coverpage.jpg)

Used my tubing bender to make a new rear "hoop" went with a squared off look for the time being, I like it.

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/15tailhoop.jpg)

And here's where I'm at today.  More to come. As always, I don't mind suggestions but don't feel bad if I don't do what you say  :P :P :P

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/18rearoff.jpg)

I've been mulling around a monoshock idea for now, but I think the twin shocks are part of what a tracker looks like (just my opinion).  I may still do it as I like a challenge. Thanks for looking gents.
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Nov 25, 2012, 19:57:41
And where I've ended up today.  Got the passenger peg plates off, filled in rear hoop and the inner fender butts up to it (goes on top really) so no crud/water will go past it. 

Swinger with crap cleaned off it. Sooo much sludge.

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/19swingarmcleanup.jpg)

Rear hoop filled in with my version of a "fender" for now.

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/22rearhoopfillin.jpg)

Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Nov 27, 2012, 21:52:44
Cleaning up the forks.  I'm trying something new to clean up the top as they were pitted a bit. Hopefully it works out well.  Seals should be here tomorrow, so I can get a move on the front end.  My plan is to have that in working order, the way they should be, so that when I put the engine back in, I can mock up the Monoshock better.  Oh, yeah I decided to try a monoshock approach...we'll see how it goes.

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/24forkcleanup.jpg)


Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Nov 28, 2012, 11:54:10
Anyone ever heard of these guys?  http://www.disastermotors.com/collections/all

Found a "full" gasket set for $64 + shipping.  Pretty reasonable since everyone else wants 75 or 90 for the Athena one...
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: Getnjgywitit on Nov 28, 2012, 12:11:44
Watching!  Keep it up!
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Nov 28, 2012, 12:54:51
Thanks man! Every once and a while you feel like you are talking to yourself! Engine gasket set ordered up, and fork seals should be here today.
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: Maritime on Nov 28, 2012, 13:54:00
Good start so far. 

Cheers,

Maritime
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Nov 28, 2012, 15:05:47
Thanks man! Dennis Kirk got these to me today. Bought them last night around 7pm!  Free holiday shipping!

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/P1017833.jpg)

They didn't have the rear wheel bearings in stock, so I'll wait for those until later.  Anybody got thoughts on tires.  I would like some tires that aren't TOO aggressive, since most of it's life will still be on the street. Got some great cabin roads/dirt that she will see in the spring :)
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: Maritime on Nov 28, 2012, 20:13:45
I think there is some good shinkos in dual tread.  Mike had them on his 650 chop he had for 30 mins.

Sent from my MB525 using Tapatalk 2
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Nov 28, 2012, 22:05:17
Thanks, I'll take a look there. 

Here's the forks now, still cleaning them up.

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/P1017836.jpg)
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Nov 30, 2012, 21:03:28
Forks are coming along nicely. Still cleaning and working on the triple clamps. 

shiny  ;)
(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/27forkpainting.jpg)

And I've been convinced to go for a monoshock on this one. It's another challenge, and I've always liked the look.  Looking for a shock at the moment. Been searching for 600 class shocks (cbr's etc)  Here's the hoop I made out of 1 piece for strength.  Got some cool ideas for how I want to do this, but realistically I need the shock here for any actual work to be done so it's not the exact length etc. and I may mock it all up and get some thicker tubing. Right now it's 16 Gauge.

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/28monoshockhoop.jpg)

Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: veaone on Dec 05, 2012, 00:23:23
Looking good. Mono shock is gonna be sicks on this bike. Looking forward to see it progress.
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: ronnie on Dec 05, 2012, 03:22:38
I'm watching this, I always liked the look and practicality of a tracker!

Sent from my Galaxy Nexus using Tapatalk 2

Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Dec 05, 2012, 08:56:50
I'm waiting on an ebay item to finish up today  ;D

The CBR shock I have is over 11 inches.  I found one that fits another bike (and it IS a monoshock bike) at 9 1/2"  Which will help with a space issue I would like to address.

I forgot to upload these ones the other day. Here's some more.

Forks all cleaned up, new 20W fork oil to help with the old springs.  Got em as tight as they go inside.
(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/29forkoil.jpg)

And starting the mockup, waiting on that shock (I hope I win!)
(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/30monoshockmount.jpg)
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: johnu on Dec 05, 2012, 10:54:33
I used a Kawasaki Ninja 650 shock on my mono project.  Most 600 shocks are meant to be used with linkage set up.  I look forward to seeing progress with this bike.
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Dec 05, 2012, 13:02:17
Yeah, that was my exact thought, so I found one that didn't use linkage like that.  Do you remember the length on the 650 shock you used? (eye to eye) And do you have a link to your build thread? I may already be subscribed to it, but I'm subscribed to a LOT of threads on here  ;D ;D
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Dec 05, 2012, 15:35:28
And from Canada...

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/31gasketset.jpg)

I've never done anything with valves/valve removal before, so I think it will be time to learn on this bike.  At the very least I want to put the new seals on them, lapping doesn't look too hard though.  I'll take tips/tricks when I get to that point!  ;)

Bid doesn't end on that shock for another 6 hours....and some jerk (probably one of you  >:() outbid me at the moment...  ;D
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: johnu on Dec 05, 2012, 19:24:33
The Kawi shock is 11 3/8" cntr to cntr.

Here is the link to my project.  http://www.dotheton.com/forum/index.php?topic=20290.0
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Dec 05, 2012, 21:32:02
Great! Thanks Johnu...I got through about half of your build so far...that is an insane amount of quality work you have done.  I am no machinist, so I think I'll keep my build on the "easier" side... ;)

As for the shock, I got one that does not use linkage, and has bearings in the ends (or at least one end). I searched around and many said that it must have bearings or there will be problems  :o  Your EX650 shock also had at least one, most likely both ends had bearings correct?

I did win the shock and will post pics when it arrives. It comes in at a shorter 9 1/2 eye-to-eye so it should be perfect for what I need. (I hope)

ONWARD!!

Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: johnu on Dec 06, 2012, 00:59:08
Yes there isa bearing on one end of the 650 shock.

I am curious as to what your 9 1/2" cntr's shock is off of.  I will be following your progress closely.
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Dec 06, 2012, 13:10:56
I was keeping it hush-hush until I got it in, just in case I goofed and got one without the bearings...they LOOK like bearings...  ::) ::)

I'll give you a clue. It's not from a Japanese bike. Nor an English bike. Nor an Italian bike.
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: Maritime on Dec 06, 2012, 13:23:40
That leave something like hardly ableson?
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Dec 06, 2012, 14:58:41
Nope. But good guess...ha! I knew I'd stump you guys.
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: johnu on Dec 06, 2012, 16:30:31
Nope. But good guess...ha! I knew I'd stump you guys.

Probably a Buell.
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Dec 06, 2012, 16:49:59
Wrong again! This is fun. haha. Just wait and see...
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Dec 09, 2012, 15:21:12
Made it to the shop. Say what you want...but I sure do love my subaru/snowmobile/bike getter/mudder/dirtbikehauler.....

Time for some more work!
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Dec 09, 2012, 18:21:01
Wow, when I got the bike running and nothing ate itself, I assumed the bike was in good mechanical condition. I have come to find that NONE of the engine studs that hold the damn engine together, were torqued down!  No wonder this damn thing ran a tad funny, AND LEAKED LIKE A SIEVE!!!!  The headgasket looks brand new, no pressure marks or anything (not that I'm going to re-use it) but I got lucky here.  It almost looks as though someone had gone through and put it back together, and then forgot to tighten those bolts and it ran funny.  Cylinder walls look great (haven't checked spec yet) and everything looks nice in there. the only nasty part was the base gasket which you can see in one of the pics.

On to the pics as per usual.

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/32enginedisassembly.jpg)


(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/33enginedisassembly.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/34enginedisassembly.jpg)

Now time to drive back home in the fun snow!


Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: gearhead231 on Dec 09, 2012, 18:31:40
Send some of that snow down here.  My jeep is bored.
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Dec 10, 2012, 10:45:28
Will do, got about 15 inches or so!  Think UPS will ship it for me?
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: gearhead231 on Dec 10, 2012, 14:36:02
Im sure they could figure it out.  Seems like everywhere else in Iowa got some kind of snow except where I live. 
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: VonYinzer on Dec 10, 2012, 15:14:23
Nice build. Keep it up.
Title: Re: Well, time to try my hand at a tracker. 71' CB500..eh?
Post by: MotorbikeBruno on Dec 10, 2012, 15:43:14
Thanks Yinz. This is the 4th engine I've ever pulled apart, learned quite a bit from the previous 3, so I'm hoping this goes smoothly, someone else already scraped the old gasket off so I'm pretty stoked about it!

Title: Re: 71' "CB500 has mono" project. Someone call the doctor :)
Post by: MotorbikeBruno on Dec 11, 2012, 21:42:06
And I think they put new rings, and honed the cylinders too...their main problem was the fact that they put goop on EVERY DAMN SURFACE THEY COULD FIND.  Under the base gasket, on top of the base gasket, then under and on top of the HEAD GASKET...I'll snap a picture of the top end side tomorrow. There's so much soft carbon built up it's really odd.  Pistons are relatively clean though  ;)  Won't be too hard to make them shine up.


(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/36enginedisassembly.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/35enginedisassembly.jpg)


And my shock is in Kansas at the moment...should be here tomorrow or Thursday at the latest!
Title: Re: 71' "CB500 has mono" project. Someone call the doctor :)
Post by: MotorbikeBruno on Dec 12, 2012, 11:53:18
And the shock came in this morning!  The picture doesn't show the ruler straight on, but it's about 9 3/4 at this point, and it looks like there is some room to adjust the tension on the spring quite a bit.  Hopefully I find what I'm after with this!

It's actually from an 03' INDIAN Chief...

And it does have bearings on both ends, so now I can post a pic  ;D ;D ;D

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/37monoshock.jpg)
Title: Re: 71' "CB500 has mono" project. Someone call the doctor :)
Post by: johnu on Dec 12, 2012, 11:59:41
Well I never would have guessed that!  My only concern would be is that the Indian is a way heavier machine than yours.  Have to back the spring tension all the way off to start out I imagine.  Looks like a nice piece though.
Title: Re: 71' "CB500 has mono" project. Someone call the doctor :)
Post by: MotorbikeBruno on Dec 12, 2012, 13:06:50
Yeah, that was my thought as well.  It will be a tad stronger than needed, it looks like I can back the travel off quite a bit, so hopefully it won't cause any issues...but it's got two bearings, so I know it will work for the purpose I bought it for.
Title: Re: 71' "CB500 has mono" project. Someone call the doctor :)
Post by: MotorbikeBruno on Dec 15, 2012, 16:54:19
Got a little bit more done, not as much time with all the Christmas stuff going on, wish I was shopping for more parts  :'(

Anyways, got the lower shock mount drilled out to the exact size needed, then I'll shape them accordingly. Unless it's cool to have giant blocky looking mounts... :o :o   Can't wait to hack the rear end off and start all over with that   ;)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/38shockmounts_zps05010157.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/39shockmounts_zps3605e402.jpg)
Title: Re: 71' CB500 monoshock with no name.
Post by: 7aliveatlast7 on Dec 18, 2012, 11:09:58
i vote keep the mounts as they are and call them modern art.  good looking build so far!
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Dec 18, 2012, 20:53:03
New name would be project half-done and off center... :D
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Dec 20, 2012, 19:56:59
Ok ninjas, it's getting closer to go time!  Now it's all about figuring out what the heck I want to do next...is this angle about right?  Or am I going to have issues? (yes I'm actually asking you engineering type fellows) I expect to get some lambasting, which is cool...go ahead hit me with it.. ;))   I already know it may be TOO big of a shock, etc etc, but it's worth a failed try and a really stiff ride to find that out, worst case, I cut it all apart and start over.  Nothing's welded in place or anything here, I think I'm going to re-make my swingarm hoop out of a little thicker tube.  Anyone know what other's have used?  I think mines 14 Gauge tubing at the moment.

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/40shockmounts_zps1ef46e70.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/41shockmounts_zps56405731.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/42shockmounts_zpsa71873bc.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/43shockmounts_zpsd5f4bb3a.jpg)
Title: 71' CB500 monoshock with no name.
Post by: neevo on Dec 20, 2012, 21:22:11
My swingarm brace is going to be made out of 1" x 2mm thick tube with 22.2mm x 2mm supports.

14g should be fine as its about 1.9mm
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Dec 20, 2012, 21:30:37
Rock on, thanks for the info Neevo.  I'm subscribed to your build and it's been a hell of a journey!
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Dec 20, 2012, 23:13:30
Oh and I'll ask again about where I place this shock. I put the rear on for an idea of about where it used to be.  Not really sure if those are the stock shocks but they are so worn out they'll become art or something.  Shouldn't change the initial stance much, and the Forks are going to stay about the same, so I "should" have about the same as stock rake etc. right?

And that yellow shock paint had to go! Got rid of the sticker and got her all silvered up!

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/44shockmounts_zps9450b982.jpg)
Title: 71' CB500 monoshock with no name.
Post by: neevo on Dec 21, 2012, 07:28:41
Rock on, thanks for the info Neevo.  I'm subscribed to your build and it's been a hell of a journey!

Cheers buddy, fingers crossed it works out ok!

I think you'll find swingarm arc is going to be just ok as you have it setup. If possible get a compass and draw a line around where the shock attaches using the swingarm mount as the centre point. Make sure it doesn't get the other side of the shock. If it does maybe look at lowering the upper mount a bit to fix the problem.
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Dec 21, 2012, 12:39:57
I didn't get what you were saying at first  :o  Now I get it.  I've asked for a bit of help and realized that the tubing I was using was only 16gauge...so I went and got the proper 14 gauge today and will re-bend a hoop for it.  I'm going to do multiple bracing points like a trellis frame style, so I should be OK.  And I think I'll move the shock mounts so they are more forward instead of towards the rear just because of the forces applied to it (thanks Teazer for the info!)

I'll get on it later today (I hope) the wife is off early and I am fairly positive that she wants to hang out  ;)

Title: 71' CB500 monoshock with no name.
Post by: neevo on Dec 21, 2012, 18:13:15
I didn't get what you were saying at first  :o  Now I get it.

Wrote it at the pub after quite a few beers ;)
Title: Re: 71' CB500 monoshock with no name.
Post by: Bert Jan on Dec 22, 2012, 14:47:42
i want to chime in with some info i think is handy at this point.

i would place the 2 small pieces of iron that connect the shock to the swingarm at a different angle. i think its better to turn them a bit downwards, so that the oem shock mount holes, the new piece of tubing, the bolt and the shock are in-line with each other. The way you've mounted them now i think is not ok because you will have some huge stress torsion on the new piece of tubing. if you dont understand i can make a drawing. but i am on a new computer (imac 24" YAY!) and it has no photoshop yet...
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Dec 22, 2012, 14:58:30
That's exactly what I'm doing Bert! Thanks for the info!  This was the beginning mock up, and I've been bouncing emails back and forth with Teazer on the subject and he gave me some great info. Neevo's build and many others have been helpful as I slowly get ready to tack the new rear hoop back in.  I have to remeasure some things, rake seemed ok but I think the trail was too long (2.25inches or 133mm or so)

On a good note...I had an excuse to get rid of some of the twin-shock frame in the back...and shortly I'll tack the rear swingarm hoop in place, and re-mock the whole thing back up, hopefully with the correct mounting style this time!

Thanks for helping guys, I really appreciate the constructive input.  8)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/45gettingdowntobusiness_zps5693152c.jpg)
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Dec 22, 2012, 15:31:31
And here we go!  Not exactly where it will be, must measure the sag in the rear again, and I still have to make a place for the front end to mount to.  I'm also trying to come up with a way to have the top end of the shock have a slight amount of adjust-ability to it using spacers etc, but in the end may just leave it stay where it is, and change geometry by moving the forks up and down in the trees, or maybe by having me lose or gain some weight   :o :o   One thing I would also like to note, the wheel is mounted in as far as it can go, so this is the closest a wheel can get to the hoop, realistically it will be slightly farther back, as much as 1 more inch away depending on chain length etc.

Bert I think this is what you were referring to with the shock mounts correct?

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/46remockupshock_zps726862c1.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/47remockupshock_zpsd3403b43.jpg)
Title: Re: 71' CB500 monoshock with no name.
Post by: teddpage on Dec 22, 2012, 16:17:35
Looks to me like you could weld in some gussets in the frame for your upper mount...then just make some spacers so it all fits snug.
Neat project!
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Dec 22, 2012, 16:49:37
Haha, yessir! Got one done, and took a break between this one and the second gusset.  I'm getting more stoked on this build as the hours go by  8)
Title: Re: 71' CB500 monoshock with no name.
Post by: Bert Jan on Dec 22, 2012, 19:49:05


Bert I think this is what you were referring to with the shock mounts correct?

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/46remockupshock_zps726862c1.jpg)


right on!
Title: Re: 71' CB500 monoshock with no name.
Post by: teazer on Dec 22, 2012, 21:19:09
That looks much better
Title: Re: 71' CB500 monoshock with no name.
Post by: Bert Jan on Dec 23, 2012, 08:23:14
Have you checked all the clearances when the shock is fully "in"?? Might be a tight space between wheel and hoop...
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Dec 23, 2012, 12:48:06
Getting there Teazer! haha. 

Bert,  the wheel is slid as far forward as it goes in the slots.  When I put the chain back on, it will not be as far forward as that, it will be 15-32mm back from where it is now.  That should give me the needed clearance I hope!!  Also, this shock will HOPEFULLY work, as it's made for a bike that was quite a bit larger and I only weigh a solid 155lbs (70 kg!)  I don't think I'll be able to bottom it out if you know what I mean.

I was getting excited and didn't mirror one of the top shock mounts, so when I went to countersink the mount to make the correct distance, I did it on the wrong side  :(   >:(

Fixing that and hope to have it welded in to do a ton more measurements! haha.
Title: Re: 71' CB500 monoshock with no name.
Post by: teazer on Dec 23, 2012, 13:14:51
Bruno

I weighed about 155 when I started modifying bikes.  Now let's say that shock would work just fine for me.  If you take long enough, you will grow into it. :-)
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Dec 23, 2012, 15:30:48
Haha, yeah, my dad had a smaller waist when he was my age...not so much now.... I'm only 27 though  ;)

Maybe if I turn hard enough/give it enough pressure it will work to it's correct potential?  ::)

I'll just add a ton of bracing in the back to make it heavier! Speaking of......here's how she looks as of now, haven't checked geometry yet, I'll get some numbers again Teazer after I throw the bottom end of the engine back in, and get it off the center stand.

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/48shockinstall_zpsd37e6bcc.jpg)


And I started with an outside Front brace.  If I remember correctly bringing it to the far towards the front of the swinger is better so I did just that.  The other side will be put on next and so far, she's level and straight!

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/49bracingstarted_zps669b6e58.jpg)
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Dec 28, 2012, 13:02:09
As I've been working on the engine right now, I found these great videos on Youtube of a guy going through a CB550 engine clean up etc.    Here's the link if anyone is interested.

https://www.youtube.com/watch?v=DwzXWMk26zc

I am at the point where I am going to start cleaning up the head, I bought a valve compressor tool a little while back and this will be my first time actually doing anything with the valves.  For now, I am most likely only going to swap out the old oil seals for new ones, unless I NEED to lap the valves.  I've heard and read mixed reviews, and it seems that if they aren't pitted, no reason to lap them. Does that sound right?

Also, I'll get a pic up in a bit, but the PO nicked the base gasket area a little here and there, so I was wondering if there was something specific to use on that to make sure there aren't any leaks.  I've got yamabond etc, and as far as I knew, the base gasket area has no compression, so it would be OK to use some sort of sealer there. Am I correct in this assumption?  Thanks guys! Hope you had a great Christmas/holiday. 
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Dec 28, 2012, 17:46:17
Here's those pictures I promised.  LOTS of cleaning to do on these damn parts. He pinched the O-rings when re-installing, thus the leaking and other problems.  I can only assume it leaked like a sieve, so he decided to goop up the ENTIRE engine.  I'm a tad worried this stuff is everywhere in the engine at this point.  I'll find out more when I get into the oil pump and drop the oil pan and get in there.

(http://i1186.photobucket.com/albums/z374/Rsvbruno/52enginepainting_zpsed82a550.jpg)

ahhhhh clean again!
(http://i1186.photobucket.com/albums/z374/Rsvbruno/53enginepainting_zps430f2643.jpg)

Prettied up again. After a LOT of cleaning.

(http://i1186.photobucket.com/albums/z374/Rsvbruno/54enginepainting_zpsef28ee50.jpg)

Pistons cleaned up and re-installed.

(http://i1186.photobucket.com/albums/z374/Rsvbruno/51enginepainting_zps16db1a40.jpg)
Title: 71' CB500 monoshock with no name.
Post by: neevo on Dec 28, 2012, 19:32:44
Prettied up again. After a LOT of cleaning.

(http://i1186.photobucket.com/albums/z374/Rsvbruno/54enginepainting_zpsef28ee50.jpg)

Jesus! Nice work. What was the process? Or has it been painted?
Title: 71' CB500 monoshock with no name.
Post by: neevo on Dec 28, 2012, 19:33:07
Jesus! Nice work. What was the process?
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Dec 29, 2012, 15:29:02
To be honest, it was brake cleaner, and wax/grease remover and a bunch of Q-tips.  Not only do q-tips work great on your ears, they get in the fins quite well.  So I was able to get all the grime out of the fins, then soda blasted it to get some of the flaking paint off etc.  A little sanding here and there, and then repainted with engine enamel.  If you read the can, you gotta do it in ONE day or you have to wait 7 days.  So it was a coat of primer wait 20 min, coat of paint, wait 20 min coat of paint, then clear coat, then baked and all going well.  :)  Next up, get the pistons back into their home, and then I've got to pull the valves to see what they look like, and remove the oil seals and replace them. 
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Dec 29, 2012, 17:50:40
Here's the cylinders back on! I was inspecting the insides where the chain goes and I thought it might have rubbed the sides.  Upon further inspection, the last idiot to touch this motor bent the master link and it was very "loosely" on there and could move back and forth quite a bit (well, for a chain that is).  So I'll be ordering up a new master for the chain as the chain itself doesn't look bad.  Here's a nice shot of the painted engine back together.  While waiting for the new cam chain master link, I'll be able to get at the head, and engine sidecovers, take a look at the clutch plates and oil pump.  Starting to look good though!

(http://i1186.photobucket.com/albums/z374/Rsvbruno/56enginepainting_zpsa52d7486.jpg)
Title: Re: 71' CB500 monoshock with no name.
Post by: teazer on Dec 31, 2012, 00:08:52
FYI, there are many different "219"am chains with different diameter pins and different pin lengths.  I went through a pile of them years ago trying to get the strongest pins and side plates for a race bike.

The point is that if it's a stock chain, a stock link should be fine, but if the link is loose or too long/short, it may be an aftermarket chain.
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Dec 31, 2012, 12:03:15
Is there anything stamped on the chain that might help me discern this?  I'll take a look and get a clear picture of the "problem" I am seeing.  Also, I think I'll have to get a cam chain breaker then don't I?  I've got a regular chain press, breaker, but it's a tad large for this one  >:(
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Jan 03, 2013, 19:55:32
Here's the head.  It looks like they were cleaned up at one point, but they didn't bother to clean the exhaust ports or anything other than cleaning the valves maybe.  As I said before, this is the first time I've done ANY head work, so bear with me and my easy questions.  Does anything look bad to anyone based on the pictures below?  It looks like it might be a good idea to JUST BARELY lap the valves as they didn't look like they were seating perfectly, but this could have been due to the insane amount of RTV or whatever was used on the headgasket and head itself maybe?  Let me know what you think, I'll be out of town until Sunday night.  Thanks gents!  8)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/58valvework_zps46f901da.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/63valvework_zps3dc40e69.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/62valvework_zpsc2dc8dc2.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/61valvework_zps45969cdf.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/60valvework_zpsd496c1f6.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/59valvework_zpsf2906392.jpg)
Title: Re: 71' CB500 monoshock with no name.
Post by: Bert Jan on Jan 03, 2013, 20:44:56
Looks great man! Just clean em up and do a leakdown test afterwards. Or did you do that already? If not, clean everything up and put it back together with new seals. Then, lay the head on a flat surface and pour (to the edge) thin liquid like gasoline or thinner in the chambers - dont forget the sparkplugs ;)

Leave overnight and check next morning if liquid is still the same level. If so, go! If not, lap leaking valve(s) and check again.
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Jan 03, 2013, 20:52:45
I didn't check before hand, I really should have  :(

I'll be out of town, so no progress until next Monday or so.  Have a great weekend gents.
Title: Re: 71' CB500 monoshock with no name.
Post by: Bert Jan on Jan 03, 2013, 21:05:11
I didn't check before hand, I really should have  :(

I'll be out of town, so no progress until next Monday or so.  Have a great weekend gents.

yup, i would have saved you some work maybe.
p.s. last picture you posted looks a bit of rust on the valve tube? check it good, valves go up and down the shaft gazzilion times.
Title: 71' CB500 monoshock with no name.
Post by: neevo on Jan 03, 2013, 22:14:50
yup, i would have saved you some work maybe.
p.s. last picture you posted looks a bit of rust on the valve tube? check it good, valves go up and down the shaft gazzilion times.

How are you supposed to check valve guide is good? Is there a wiggle test or something similar to check its smoothness and wear
Title: Re: 71' CB500 monoshock with no name.
Post by: Bert Jan on Jan 04, 2013, 07:21:10
How are you supposed to check valve guide is good? Is there a wiggle test or something similar to check its smoothness and wear

good question, and to be honest, i don't know. I normally check for excessive play by wiggling a bit, but that's nowhere near precise, i know. rust in the hole can cause the valve and guide to wear faster. Soooo, just clean 'er up good i guess...
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Jan 04, 2013, 09:33:29
Thanks Bert, I'll check it out.  I am pretty sure it was just carbon, but now I don't remember! ::)
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Jan 08, 2013, 12:57:23
Ok, back from "vacation"  made a couple of bucks and now I can buy more parts! woohoo!  ;)

Teazer, I can't seem to find any master links where I'm located. Pretty much everyone that sells a cam chain around here sells it as an endless chain.  I would prefer not to have to pull the engine COMPLETELY apart if I don't have to.  Any idea on a part number of any of the links you looked up before?  I'll keep searching in the mean time.  Next up: getting a brass wheel to clean up the valves and soda blasting the head/cleaning and degreasing it.
Title: Re: 71' CB500 monoshock with no name.
Post by: teazer on Jan 08, 2013, 15:04:47
I just grabbed this from the all knowing Google oracle....

BF05T from Mikes XS and buy a couple of spare rivet links

http://www.mikesxs.net/products-26.html

Google heavy duty cam chains or 219H or BT05 and there should be lots of listings
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Jan 08, 2013, 16:37:58
So those rivet master links are the same as the stock chain that's in there?

Edit: or are you saying to buy a new chain with rivet and start over?
Title: Re: 71' CB500 monoshock with no name.
Post by: Bert Jan on Jan 11, 2013, 05:12:39
new camchain will set you back about 50, but well worth the money!! DO IT.
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Jan 11, 2013, 15:46:08
Yeah I decided to go that route, Herm at DCC got me taken care of.  I'll get the continuous chain, pop a rivet out and get the master for it and press that on.  Shouldn't be too bad. I've done several drive chains so I don't forsee it being too much trouble (may buy an extra cam chain master JUST in case!)

On to cleaning up the valves some more.  I was out sick for a bit there  :'(  Must have been all the alcohol I consumed last weekend while snowboarding... ;)

Here's the pics of the valves. I'll take any thoughts as this is my first time doing them.  The exhaust valves don't "look" like they are seating (except number1)  but that's just my thought based on what the intake valves look like.  I'll have to put them back in the head after I clean it up a bit, and see if anything leaks through.

Intake valves
(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/64intakevalvesclean_zps1f6494d4.jpg)

Exhaust valves
(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/65exhaustvalvesclean_zps9b77685c.jpg)

Title: Re: 71' CB500 monoshock with no name.
Post by: tron97 on Jan 14, 2013, 02:25:07
Baked and all happy at the moment :)   

Im usually quite happy when im baked as well..
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Jan 14, 2013, 11:10:59
I noticed my bad english, haha I didn't mean Baked as in ME...I meant the paint on the cylinders etc!!!  :P
Title: Re: 71' CB500 monoshock with no name.
Post by: teazer on Jan 14, 2013, 13:56:52
Valves look like they all need to be ground.  If you can find a local auto machine shop with Serdi machine, get the seats done at the same time.

To see how bad they really are now, use a small amount of fine grinding paste and give them a few rotations back and forth and clean them and post another picture of valves and seats.
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Jan 14, 2013, 16:14:43
That was my exact thought Teazer.  I've called around and am waiting on 2 quotes for having a shop do 3 angle valve seat cutting and having them do it.  Prices they showed on the net were about $160 to do that (if I read that correctly) which I don't see as TOO bad.  I also bought all the stuff to do a quick lapping, but read all the horror stories on here about ruining valves etc.  I know not to use a drill, and to do it slowly by hand while picking it up several times ----neat video on here somewhere.  Anyways, thanks for the info, it confirms my lack of knowledge in headwork! Will a quick lap like that ruin the valves? Or do these not really have coatings like the new ones? 
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Jan 16, 2013, 18:29:16
Well, contacted a local company that is reputable for doing headwork for racing etc...

He said cost is $162 + parts.

Being the inquisitive person I am...  $162 is labor, it's a 3 angle valve seat cut, and parts are valve guides and/or valves them selves.

Honestly I'd like this done right, but knowing most shops, they will want new valves...which last time I looked were about $40 each for new valves OUCH.  I suppose I can ask when I get there and go from there right!?  Does that seem like a fair price too?
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Jan 28, 2013, 19:01:40
A little bit of work done as of now.  New cam chain tossed in the engine. Waiting on a connecting link (master) as I pressed the one I had too much  :'( oh well, live and learn!

And I got my new Wideband A/F tuner for all the carbureted monsters I have...and my Aprilia has had a shitty map since the day I got it...so I'm going to re-tune that thing so she's happy too! 

Just got off the phone with my valve guy too!  He re-cut the seats, and cleaned it all up, said I will just need to put it back together and I'm golden!  $100 well spent!



(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/66camchaininstall_zps43fe4234.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/67widebandtuning_zps8f0ee5be.jpg)
Title: Re: 71' CB500 monoshock with no name.
Post by: teazer on Jan 29, 2013, 00:57:52
That price sounds like Bill Bune. They do our cranks and seem to do a good job. Seemed like a lot, but 8 valves plus 8 seats is around 20 bucks a valve/seat combo and that's pretty reasonable.

I'd still give them a quick whirl with a lapping stick and fine compound just to see how they look.

ZT2 is a good idea too.  I went Innovate and can't wait for the weather to improve so I can try it out.
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Jan 29, 2013, 11:39:21
That price sounds like Bill Bune. They do our cranks and seem to do a good job. Seemed like a lot, but 8 valves plus 8 seats is around 20 bucks a valve/seat combo and that's pretty reasonable.

I'd still give them a quick whirl with a lapping stick and fine compound just to see how they look.

ZT2 is a good idea too.  I went Innovate and can't wait for the weather to improve so I can try it out.

I ended up taking it to a specialty guy up north a bit, Jim specializes in old tractors, motorcycles, race cars etc.  Bune was a bit busy and he wanted 160 + parts for it.  I asked Jim if he would do everything needed so that I could put it back together (thus taking me...a complete newbie to valve work...out of the equation).  He said he'd lap them in at the end as well for me  ;D  Going to pick it up tonight!  Teazer, do you know how they stake the cam chain master link....they look like solid rivets or whatever you call them.

Also, I was going to go with Innovate, but the emails I got while going back and forth with them while asking questions were condescending or just plain rude.  You seem to know a bit more about engines/racing etc, so maybe my questions were beneath them.  The guy from Zeitronics was very nice and answered my questions without any attitude, so I went with them instead.  Seems like they all do the same thing, just in slightly different ways.  I would love to see the info you gather while using yours.  I'd love to learn as much as possible on this, as I am really excited to dial in these old bikes instead of getting them to run just OK  :P
Title: Re: 71' CB500 monoshock with no name.
Post by: teazer on Jan 29, 2013, 18:07:56
Valve seats should not need to be lapped after they are cut - if they use a Serdi. If they use Neway cutters or stones, that's a different story.

I use a solid chunk of steel and a large hammer and punch but I also have a chain link rivet tool.

Innovate are not so good at answering questions.  I think they work in the basis that if you are planning to use an O2 meter, you should already know the answers to your questions.


Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Jan 30, 2013, 12:26:38
Valve seats should not need to be lapped after they are cut - if they use a Serdi. If they use Neway cutters or stones, that's a different story.

I use a solid chunk of steel and a large hammer and punch but I also have a chain link rivet tool.

Innovate are not so good at answering questions.  I think they work in the basis that if you are planning to use an O2 meter, you should already know the answers to your questions.

Yup, that's exactly the feelings I got.  There is hardly any info about tuning motorcycles with their stuff, let alone ANY wideband meters out there. I hope you and I can rectify that a little?  Your perspective being that of someone who DOES know what they are talking about...and mine...from some dude in a garage that reads far too much on the internet!  ;)

I'll see about the hammer and punch...seems like it might be tougher to do, as it's 90 degrees to me, poking out the top of the engine!  I find it odd that they sell master links...yet nothing really to put it back together...they could have sold me another tool right there on the spot!  I believe he used stones....all I know is that the valves were not sealing before...and they will now! haha  :D
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Jan 31, 2013, 19:57:58
Woohoo! Progress!! I swear I'm working on this...just at a snails pace and taking my time on re-assembly so I don't mess anything up!

Couple of pics of where I'm at.  The extra cam chain master links should be here tomorrow since I Hulked the one on there  >:(

And wouldn't you know...I'm out of lube  >:( (insert bad joke here)  I mean ENGINE ASSEMBLY LUBE....so the head will wait until tomorrow morning.  I can see light at the end of the tunnel!

old to new again! The PO lovingly etched a "4" into the head ..ugh.
(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/69oldtonewagain_zps3b3a99b4.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/70reassemblygettingstarted_zpscf9069f2.jpg)



Title: 71' CB500 monoshock with no name.
Post by: neevo on Jan 31, 2013, 20:08:48
Nice clean head there mate. Looking good!
Title: Re: 71' CB500 monoshock with no name.
Post by: Bert Jan on Jan 31, 2013, 22:14:00
On the last picture, the one with the cardboard, you have the old valveseals? 
You can not re-use them (well you could... but eeehh) so why did you keep them instead of throwing them away?

Did you polish the top fins? they look mirrors :)
Title: Re: 71' CB500 monoshock with no name.
Post by: teazer on Jan 31, 2013, 22:30:06
You can probably rivet the link before the cam is fitted and probably before the head goes on, so you should have enough access.  Of course if the crank is out, you just do it on the bench and slide the whole thing over the crank.
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 01, 2013, 12:18:49
On the last picture, the one with the cardboard, you have the old valveseals? 
You can not re-use them (well you could... but eeehh) so why did you keep them instead of throwing them away?

Did you polish the top fins? they look mirrors :)

Haha, they ARE the old valve seals, I was just keeping my brain straight knowing that I'll need to put one of each thing back in...I have the new seals in the bag in the center of the cardboard  ;)

The top fins are just painted. I took my time and painted them correctly (or so I hope)  ;D

Teazer, I'll rivet the link before the cam is fitted and before the head goes on like you suggest.  This is what I did the first time when I pressed it too hard  >:(    Unfortunately the crank is not out, otherwise I would have just left the replacement cam chain riveted and ready to go  :'(   Thanks for your inputs gentlemen!
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 02, 2013, 16:31:01
And she's all back together!  I tried to do the cam chain...and apparently I DO have the attachment that presses and then rivets/dimples it so it's set.  Problem is that it was made for a slightly smaller chain...and so I destroyed the two master links I had figuring this out.  Man I hate doing stupid things.  I measured it up and ground down one of the press plates so that it doesn't CRUSH my chain again!  Should be golden next week when the DCC boys send me another master link.  I'll make sure to measure from now on, I just assumed the tool they sold would do the trick.

 

Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 03, 2013, 16:21:36
While waiting for some more parts...I thought I would get to cleaning up some others.  Headlight bucket sanded down and ready for it's new color, cut the really long bars down a little. Much more comfortable while on the bike.  Threw another side shot on so I can play around with what to do on the back end.  Always liked the look of the brat style seat...I definitely don't want to do the Harley tracker seat, not my particular favorite style. Hope to come up with something soon.  I'll take your opinions...haha  :D

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/75headlightwork_zps80af8cf0.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/72barshorter_zpsd282ee39.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/73barshorter_zps9c312e73.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/74sideshot020313_zpsbbe28b71.jpg)
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 03, 2013, 18:09:50
Some more work, just before the Super Bowl.  Gotta run home now! haha.  Fixed the cracked headlight ears, I'll grind them down and make paint stick to them!  Sandblasted some of the exhaust bits, and painted the bucket.

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/76headlightears_zpsb8683845.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/77headlightears_zps3d5e3896.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/78exhaustclamps_zpsdb7ff911.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/79headlightbucketcolor_zps650fc66c.jpg)

Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 08, 2013, 18:26:21
Finally! Got the cam chain on and feeling good about it.  Tomorrow or Sunday I'll wrestle the cam back in, and get the timing situated.   

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/80headinstalled_zps85206eca.jpg)

And I changed the angle of the seat a little. My Cafe' brain is having a hard time with this tracker/brat styling  ;D  I want to keep putting a tail section to house a battery   :-\  It will be longer than it is now, I haven't had the space to set up the tubing bender.

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/81rearhoopangle_zpsaf33c8fd.jpg)
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 09, 2013, 15:39:18
Updates. Hell yeah.

Here's a pic of my ugly mug tightening the 10mm bolts holding the cam sprocket to the camshaft.
(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/82camchaininstall_zps5fd31121.jpg)

And a couple more...

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/83camchaininstall_zps3e7ba2dc.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/84camchaininstall_zps04e5481e.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/85camchaininstall_zps04e9e64d.jpg)

And now on to clean up the top cover.

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/86valvecovercleaning_zps83cc7ba3.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/87valvecovercleaning_zps5c72637c.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/88valvecovercleaning_zpsa5e6bced.jpg)
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 09, 2013, 16:49:05
Valve cover painted.  Hopefully the color scheme in my head doesn't make it look crappy. haha.

Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 09, 2013, 19:00:47
And here she sits.  Top cover and tappet covers are just lightly cleaned up for now.  I've got to go through and set all the clearances next.

Title: Re: 71' CB500 monoshock with no name.
Post by: Tim on Feb 09, 2013, 19:26:53
Engine's looking great - be careful with that one missing exhaust stud - don't want to strip anything now!
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 09, 2013, 21:15:31
Engine's looking great - be careful with that one missing exhaust stud - don't want to strip anything now!

Haha, yeah, I've got it laying around here somewhere...it stayed attached to the nut when I tried to pull the exhaust off  >:(   I think I'll be getting a couple of new ones anyways.  Thanks for reminding me Tim!
Title: Re: 71' CB500 monoshock with no name.
Post by: MickyC on Feb 09, 2013, 21:19:53
clean as a whistle looking killer dude
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 10, 2013, 13:32:03
clean as a whistle looking killer dude

Much appreciated man!  Hope to throw her in the bike this week, then I get start getting a true feel for her looks/suspension/pegs setup etc. 

Just finished up the clutch cover.  Polished the center a little, NOT to show polish, just a nice aluminum look  ;)  We'll see how it looks in the sun and if it needs to change, so be it.  Also started fixing up the points cover, as it looks like it has been dropped there before as there are some movement scratches on it.  Onward!

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/94covers_zps3afa132c.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/96clutchcoverpainted_zpse1797ab8.jpg)

(http://i1186.photobucket.com/albums/z374/Rsvbruno/Tracker%2071%20CB500/97pointscoverfixing_zps043ee277.jpg)
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 11, 2013, 19:51:58
And here we go.  Now the designing and changing of things can truly begin.  That headlight has to be lower I think.  This is my favorite part :)

Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 22, 2013, 13:17:18
More movement on the seat area.  Had to make it a little less wide, as my tubing bender radius is a little smaller than Honda's width!

Title: Re: 71' CB500 monoshock with no name.
Post by: MJPriceisright on Feb 22, 2013, 13:29:07
looking sharp man, keep those pics rolling in!
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 22, 2013, 13:55:05
looking sharp man, keep those pics rolling in!

Thanks MJPriceisright

I've been staring at all sorts of trackers for seats/subframes that I like and a few stood out.  I really dig this but I'm not sure if I can pull off the "higher seat than tank" look, and might not want to in the end, since I'm inseam challenged at 5'7"  :P



Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 22, 2013, 14:14:53
Well here's 3 photos with the bike/camera in the same spot to give an idea of the tank, and where it's at compared to the seat as-is.  First one is stock, second is where I think I'm going to put it (if I keep the seat rail the same as it is now)  and last is just a much higher version just to see what it's like, but it seems i'd lose damn near 1/6 tank to all the fuel going forward!  ;D

Title: Re: 71' CB500 monoshock with no name.
Post by: MJPriceisright on Feb 22, 2013, 14:28:42
Thanks MJPriceisright

I've been staring at all sorts of trackers for seats/subframes that I like and a few stood out.  I really dig this but I'm not sure if I can pull off the "higher seat than tank" look, and might not want to in the end, since I'm inseam challenged at 5'7"  :P

that is literally the exact tail id like to run on my xv, do you know what that is?  any more info on it?>
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 22, 2013, 14:37:20
that is literally the exact tail id like to run on my xv, do you know what that is?  any more info on it?>

Only that it's for a BMW, and it was featured on pipeburn or bikeexif.  Type in BMW tracker and I think it pops up if you hit images (using google) Found it: on pipeburn.

http://pipeburn.com/home/2012/2/12/1974-bmw-r75-krautmotors-street-tracker.html
Title: Re: 71' CB500 monoshock with no name.
Post by: MJPriceisright on Feb 22, 2013, 15:37:47
faaack been looking around cant quite find any info on the tail anywhere.. will have to do further research.
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 22, 2013, 15:53:39
Honestly, it looks like a modified inner fender (sorta)  Since it "looks" plastic or at the very least fiberglass.
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 22, 2013, 16:40:40
My hoopty...
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 22, 2013, 17:25:11
And adding some bracing. This is just a rough part, the top will be cut so it's flush looking. I had it lower, but looking at the pictures, I think it looks nice about 1" higher than where the first picture is at.  I put a bend in it so that it matched the swingarm bracing that is going towards the front.  Also the frame has a slight bend there that I feel it ties into well. 

Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 22, 2013, 18:48:17
Last one for the day, possibly the weekend.  Braces put in place, not finish welded, but in there and strong enough to test.  Next up are the pipes, and then chain and sprockets to verify the swingarm won't be an issue.   ;D
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 25, 2013, 10:42:11
And I bought tubes and tires!  First time rocking some Kendas....hopefully it turns out well.  I'd like to take this machine to some dirt roads and such, so these should do the trick!

https://www.denniskirk.com/kenda/k761-dual-sport-120-80h-18-rear-tire.p643550.prd/643550.sku

https://www.denniskirk.com/kenda/front-or-rear-k761-100-90h-19-tire.p542223.prd/542223.sku

Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Feb 26, 2013, 15:24:16
I love the smell of rubber in the afternoon...especially when it's new shoes!

Title: Re: 71' CB500 monoshock with no name.
Post by: Maritime on Feb 26, 2013, 15:49:22
Nice.
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Mar 01, 2013, 19:05:24
Finally got that damn retainer out! These are the original bearings, only a mere 42 years old and they proved that the longer they are in there, the more likely they'll stay there!  After that, I got the tire off and sandblasted the darn thing.  It might come out OK with a new coat of paint. 



Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Mar 03, 2013, 15:13:57
Decided to go a little different.  The silver stripe is really only noticeable up close, which I kind of like.  It takes some of that chrome shine away from a distance. Haven't started on the front wheel yet.

Rear wheel:

Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Mar 06, 2013, 16:04:19
So, I got my rear bearings in, and got the tire put on.  Only "problem" is that he put the wheel weights on my new paint...we'll see how long those stay there...If they go, I'll get the weights that fit on the spokes.

Getting closer to the home stretch! 40 degrees on Monday...after 14" of snow this week...gotta love MN!

Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Mar 20, 2013, 14:47:24
As customer bikes come in for the annual run on carb cleanings...my time grows shorter.  But....I got the front wheel done today so I'll get the tire on asap!

Edit:  And here's the tire on too, with new bearings as well!

Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Mar 20, 2013, 19:05:28
Wow, I didn't realize just how much better the bike looks with the wheels cleaned up and new rubber.  Time to get crackin' I heard weather is going to shape up quickly here in MN...and I want to ride this thing asap.  Here we go!
Title: Re: 71' CB500 monoshock with no name.
Post by: m511y on Mar 20, 2013, 23:06:53
Painting the spokes and rim like that is a GREAT idea!
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Mar 21, 2013, 10:18:52
Painting the spokes and rim like that is a GREAT idea!

Thanks m511y, I never have enough money to throw at new wheels and spokes.  Plus, if these are in SOLID good shape, just crusty looking and chrome peeling, why not try to save them.  This isn't a show bike, it's my bike, and I would like to take it to some dirt roads and have some fun anyways! haha.  What I DO need is an oven that I can bake my parts in....I think I'll be fabricating one this summer for sure.  Thanks for watching!
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Mar 21, 2013, 16:01:23
Next up. Oil filter put back in, with new parts, and that damn washer that everyone throws out on accident.  Cleaned up the sprocket cover, and will finish it when the frame is out for powdercoating (after I get a ride or two in!)  Replaced the petcock seals and screen with new parts!  And my oil pan BIT me when I pulled that off to clean the sludge out of the bottom.
Title: Re: 71' CB500 monoshock with no name.
Post by: canyoncarver on Mar 21, 2013, 17:21:06
Sweet bike dude.  Great build. 
Title: Re: 71' CB500 monoshock with no name.
Post by: sxecafe on Mar 21, 2013, 18:37:59
This is looking real nice. Wheels came out great!
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Mar 21, 2013, 19:38:44
Thanks guys!  I just finished throwing a bunch of parts on (that I'll have to pull off shortly  :'()  But I need to see where I can put my electrics....here's some pics of the possible end look. So far I dig it.  On to hiding/mounting the electrical tomorrow. Should be fun as I haven't even picked a battery yet  ::)  And don't you worry...there WILL be a fork brace  8)  Still working on that.  I might end up using some carbon fibre as I do have some laying around from when I thought my car should have been made of the stuff....

Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Mar 22, 2013, 19:52:54
Ok, so I did some math and this is where the Battery box is going for now it will NOT hit the tire at full compression just in case you were wondering!  :P  It will get either a "stealth" black cover/case of some sort, or a polished aluminum one...we'll see what I can come up with and what I like.  Same goes for the electrics I decided to toss under the monoshock for now.  They will get a "case" of some sort  and get silver (to match the engine) black, or polished.  It all depends on what the bike looks like and how I'm feeling about the overall look.  I'm REALLY digging this bike. Stoked to get her out for a ride in a week or less I hope!

Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Mar 23, 2013, 17:13:09
Headlight and electrical all hooked up. I've got spark too!  One thing that I am completely annoyed with is Honda's use of the extremely tiny spark plugs..WTF.  Neither of my compression tester/leakdown testers fit with this size  :'(.  If anyone has a part number of something that does, please toss that in here.  Thanks for any help in advance.  I'd like to check that before I fire it up for the first time after having done the valve grind etc.  After seeing Swan's valve issue on the Goldstar project I'm a little worried.  I'd rather not grenade the engine at this point  ;)
Title: Re: 71' CB500 monoshock with no name.
Post by: Bert Jan on Mar 25, 2013, 05:33:58
Hey Bruno, bike looks cool! one word of advice though, the electronic stuff on the old hondas is far from good.
The location you've put them in will shorten the life of all the components rapidly. I suggest you make some sort of mudguard to protect the parts from mud, water and stuff coming from the back wheel.

Also, if you want to upgrade on the parts, there is a combined regulator/rectifier wich plugs right in. Cost about 100 bucks and works like a charm. Smaller, solid-state, stronger and cleaner aswell.

Here it is:
http://www.electrexworld.co.uk/cgi-bin/sh000001.pl?REFPAGE=http%3a%2f%2fwww%2eelectrexworld%2eco%2euk%2facatalog%2fshop%2ehtml&WD=cb550f&PN=RR24%2ehtml%23aRR24#aRR24
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Mar 25, 2013, 10:44:55
Hey Bruno, bike looks cool! one word of advice though, the electronic stuff on the old hondas is far from good.
The location you've put them in will shorten the life of all the components rapidly. I suggest you make some sort of mudguard to protect the parts from mud, water and stuff coming from the back wheel.

Also, if you want to upgrade on the parts, there is a combined regulator/rectifier wich plugs right in. Cost about 100 bucks and works like a charm. Smaller, solid-state, stronger and cleaner aswell.

Here it is:
http://www.electrexworld.co.uk/cgi-bin/sh000001.pl?REFPAGE=http%3a%2f%2fwww%2eelectrexworld%2eco%2euk%2facatalog%2fshop%2ehtml&WD=cb550f&PN=RR24%2ehtml%23aRR24#aRR24

Thanks Bert!  I think my above idea got lost in translation.  There will be a box (cover) made for the electrics in the back, and the battery up front.  ;)   I wanted to make sure this bike ran well again before stripping it down to have the frame powdercoated.  I saw the new Reg/Rec before and will have to find the USA version, I think Ricks motorsport electrics has it.  I agree that the safety and life of the reg/rec is worth $100 or so!  Thanks for your input, it is ALWAYS appreciated!
Title: Re: 71' CB500 monoshock with no name.
Post by: Maritime on Mar 25, 2013, 10:57:02
Bruno, I'll look and see if I still have the details but I bellieve you need a 10MM adapter for the comp tester and I got mine for like 10 bucks on Ebay.  I needed it for the dirtbike project and it worked for the CX and the CM too.  All honda bikes seem to have the small thread plugs.
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Mar 25, 2013, 13:10:29
Bruno, I'll look and see if I still have the details but I bellieve you need a 10MM adapter for the comp tester and I got mine for like 10 bucks on Ebay.  I needed it for the dirtbike project and it worked for the CX and the CM too.  All honda bikes seem to have the small thread plugs.

Great news! I'm an idiot! haha.  I misplaced my 10mm adapter and decided I'd clean my area in the back...turns out I found it in a box with some other tools I thought I was missing... ::) :P  Did a leakdown check and we're good to GO!  I'll see if I can find the time to fire this thing up again! Can't wait to try out my Zeitronix air/fuel system to dial this thing in!  I have to figure out what to do with the exhaust system first, since I've got to weld the O2 bungs in.  Does anyone know if pitted exhausts can be saved?  I'd like to pull out a couple of dings in them, and then have them ceramic coated maybe?  Thoughts on this would be appreciated.  I should probably ask JRK about that one eh?
Title: Re: 71' CB500 monoshock with no name.
Post by: canyoncarver on Mar 25, 2013, 13:57:34
What kind of exhaust header is that?  Nice 4-2 retaining the service points.
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Mar 25, 2013, 16:24:18
From what I know the exhaust is supposedly "rare" (as if they all weren't nowadays eh?)  They were made by a company in New York, the stamping in the exhaust says  "Custom Headers Inc,  Brentwood L.I. New York, Patent Pending" 

I've tried to look them up...but the internet is cruel to "custom headers" haha as there are a billion places that do just that...  It's a dual 2-1 setup crossing over eachother and as you said, allows me to get to my oil filter! A plus if I do say so myself.
Title: Re: 71' CB500 monoshock with no name.
Post by: canyoncarver on Mar 25, 2013, 17:10:50
From what I know the exhaust is supposedly "rare" (as if they all weren't nowadays eh?)  They were made by a company in New York, the stamping in the exhaust says  "Custom Headers Inc,  Brentwood L.I. New York, Patent Pending" 

I've tried to look them up...but the internet is cruel to "custom headers" haha as there are a billion places that do just that...  It's a dual 2-1 setup crossing over eachother and as you said, allows me to get to my oil filter! A plus if I do say so myself.

Lol, no doubt.  Google's search bubble thought I was looking for porn!
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Mar 25, 2013, 18:53:59
Lol, no doubt.  Google's search bubble thought I was looking for porn!

Haha, well played Google...well played.

On a slightly different note...SHE LIVES AGAIN!!!! MUAHAHAHAHA!  Fired up in 3 kicks after all of the work on the top end etc, I'm pretty ecstatic about that.  The video is me kicking it over after that initial 3 kick fire up.  Now where's my riding gear?   8) 8) 8) 8) 8) 8) 8) 8)

http://youtu.be/TporjbYGze4
Title: Re: 71' CB500 monoshock with no name.
Post by: Bert Jan on Mar 25, 2013, 19:00:17
Nice man! Congrats!
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Mar 25, 2013, 19:19:36
Nice man! Congrats!

Thanks!  The only thing I know is that the battery isn't recharging... so I'll hunt down the issue (probably a grounding issue) and then order up the new Reg/Rec per your recommendation! haha  ;)  I can't wait to finish the little things and take her for a spin!
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: canyoncarver on Mar 25, 2013, 20:41:35
Sweet. 

Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Mar 26, 2013, 00:11:47
Yeah buddy!  8)
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: Rich Ard on Mar 26, 2013, 00:35:53
Outstanding
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Mar 26, 2013, 10:40:25
Outstanding

Thanks sir!

I found the issue...and as I suspected...it was a grounding issue.  I forgot to put it on completely!  I'll take care of that today and hopefully get a short test ride in around the back of my work here.
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Mar 27, 2013, 21:38:42
And I thought while I was at it...I should probably make it street legal for testing purposes eh?  Started making my tail/brake lights today.  This assembly will be either one of two, or I may decide to just have one.  We'll see.  So far so good.  I'll need some finishing touches on it, but I used 20 or 22 gauge sheet metal and my MIG doesn't really like it as it wants to turn it into a pile of molten metal  :-\

Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Mar 28, 2013, 19:25:46
Here's what I came up with in the end. Not how I planned it, so it will get binned and I'll make it how I wanted to in the beginning. But for now...it's wired up and I'm STREET LEGAL...except for my license plate..which I haven't mounted yet.  Sorry for the blurry second pic, I did the best I could, and failed.  :P
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: Bert Jan on Mar 28, 2013, 20:07:55
Yo Bruno,

I cant seem to find wich tire is on the back rim. I kinda like it, might do it on my front. Could you tell me wich one it is? Bike is coming together nicely!
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Mar 28, 2013, 22:17:23
Yo Bruno,

I cant seem to find wich tire is on the back rim. I kinda like it, might do it on my front. Could you tell me wich one it is? Bike is coming together nicely!

K761   8)

Same is this one below:

http://www.motorcycle-superstore.com/2/29/393/15130/ITEM/Kenda-K761-Dual-Sport-Rear-Tire.aspx?SiteID=Google_PLA393&WT.mc_ID=10012&esvt=0-GOUSC&esvadt=9-0-3886819-1&esvaid=30548&kw={keyword}&gclid=CNum0rfgoLYCFcw7Mgod2F0AOQ
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: Bert Jan on Mar 29, 2013, 06:53:14
Thank you!
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MJPriceisright on Mar 29, 2013, 11:38:55
I dig that sir!  awesome placement.
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Mar 29, 2013, 16:12:22
Thanks man! It will get modified a bit more when the frame is out, but I like the overall thought of it.   :D
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Apr 01, 2013, 10:50:50
Got her running long enough to sync the carbs!  She goes like a rocket after the hesitation from idle.  So I'll go up a size on the pilot jets as I'm at the end of the tuning ability of the mixture screws.  Also...the battery isn't charging.  So I just bought a brand new, much better than stock 2 in 1 unit.  Should be here by the end of the week.  At which point I hope to have my exhaust ideas finalized so I can drill and weld my O2 sensor bungs in there and REALLY see what's going on for my air/fuel ratio!
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: Maritime on Apr 01, 2013, 11:05:19
looking great. I think the use of the O2 would be the best way to tune any bike.  Be interesting to see your numbers when you give it a go.
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Apr 05, 2013, 13:59:41
I agree.  I'm getting closer and closer as I get the finishing goodies to make her run correctly.  Here's a look at the recent parts that came in.  New Reg/Rec unit.  Had to cut up a flasher relay from an old KZ750 I had laying around to match the New Reg/rec plugs as the original cb500 has round plugs.  Easy swap and hope to put it on and make electricity finally go back INTO the battery vs just coming out  :P

Also drilled out the pilots and got the new float bowl o-rings on there.  Slick.
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: Bert Jan on Apr 11, 2013, 20:19:42
Why did you drill the jets? It's about as hack-job as it gets imho
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Apr 12, 2013, 10:40:13
Why did you drill the jets? It's about as hack-job as it gets imho

I'm measuring each increment as I go, and I have the Colortune, and eventually the wideband O2 sensors going in to get all the fuelling correct.  At which point, I'll order up the correct jets and main jets and go from there.  I find that spending tons of money on GUESSWORK has gotten me a ton of jets I don't need in the past, and wastes my money.  I'll drill them out until I'm happy, and then buy the correct jet, saving me quite a bit in the long run.  4 jets x 3.50 each $14 + shipping each time I'm incorrect in the guesswork.
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: Bert Jan on Apr 12, 2013, 17:52:00
fair enough!
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Apr 12, 2013, 19:14:26
fair enough!

Haha.  On a side note...I now know that my pilots are TOO big at this size, the Colortune showed Rich....and my plugs agreed!!  ::) :P   So I'll look for some 42's and call it a day.  Any particular place that people prefer to get their pilot jets from?  I've got DennisKirk an hour away, but I can't remember if they sell the pilots to these old gals.
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: Rich Ard on Apr 14, 2013, 22:18:22
...the Colortune showed Rich....

that thing's always getting the drop on me
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Apr 15, 2013, 14:53:26
that thing's always getting the drop on me

Haha, damn thing works I guess.. ;)
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Apr 17, 2013, 11:40:17
I've been toying around with some pipes on this.  The pipes on it now are cool, but someone gutted and kind of destroyed the "muffler" part of them. I was thinking of running dual pipes up the back a little.  Found these duc pipes and thought it might be cool.  Eh?
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: FingerBanger on Apr 17, 2013, 13:24:29
They are cool. I have a single one and am running it under frame on CB450
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Apr 17, 2013, 15:57:06
They are cool. I have a single one and am running it under frame on CB450

Nice!  Got a pic or a link to your build thread?
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: Rich Ard on Apr 18, 2013, 10:16:41
^ +1, would like to see how you have that set up. My brother offered me his stock Duc cans and I wasn't sure whether or not to take him up on them (also, they weigh three hundred pounds each)
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Apr 18, 2013, 10:21:53
^ +1, would like to see how you have that set up. My brother offered me his stock Duc cans and I wasn't sure whether or not to take him up on them (also, they weigh three hundred pounds each)

Yeah, that's the only reason I'm going back and forth on them. I bet they weigh a ton.
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: FingerBanger on Apr 18, 2013, 10:33:31
The one I picked up is aluminum and titanium and weighs alot less than one of the stock silencers from my bike. I haven't put it on yet, so a pic would be of no help, it's laying on a shelf with a bunch of pipe in my garage.
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: Rich Ard on Apr 18, 2013, 10:42:41
Hadn't considered that - I haven't hefted the Sportster exhaust I have on my CB450 for a long time, they were probably at least as heavy.
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Apr 18, 2013, 16:22:51
Thanks for the input guys. Maybe I'll go see how much they weigh and give him a price based on that? haha  ::)
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Apr 22, 2013, 10:10:04
Well, I found a setup from a Hayabusa that was relatively cheap.  $80 for headers, and 4 cans. 1 was damaged, so I started to tear it apart to see if I could make some shorter (and far lighter) mufflers for this thing.  So far, it's a no-go.  Aluminum outer casing that I can't seem to slip the insides out of.  I'm sure I'll eventually get it.  But for now.  I have adapted the GSXR1300 headers to the cb. I like them, and it seems that I can still get to my oil filter up front without too much trouble as long as the bike isn't too hot!  ::)  There's a mounting point in the rear of the pipes where it crosses. I've got to make some new collar spacers up front, and then weld a point for it to attach at that X point.  So far, so good.

Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: FingerBanger on Apr 22, 2013, 10:35:31
I'm diggin' the way you think, man
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Apr 22, 2013, 11:22:04
I'm diggin' the way you think, man

Thanks sir!
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Apr 29, 2013, 11:22:50
Made my own exhaust collars since I didn't have any to fit this set.
Title: Re: 71' CB500 monoshock with no name, vid with new Hayabusa headers!
Post by: MotorbikeBruno on Apr 29, 2013, 11:24:42
And here's the "glamour shots" haha

Video Link here:  http://youtu.be/S1CRB9FYbvg

Pics:
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: reflexsilver on Apr 29, 2013, 19:52:27
Took me a bit, but I just went through your build from start until now. I'm loving the way this is turning out and definitely like your style. Can't wait to see the finished product!
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Apr 30, 2013, 16:18:20
Took me a bit, but I just went through your build from start until now. I'm loving the way this is turning out and definitely like your style. Can't wait to see the finished product!

Thanks a lot. I appreciate it.  I hate how long it takes me to get to the bike though. I'm driving down to Georgia for a wedding...so progress won't happen until next week.  I'll be starting and finishing the seat pan when I get home Wednesday if all goes well!  Thanks again.

Bruno
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: reflexsilver on May 01, 2013, 01:22:41
I've lived in GA for about a year now. You should enjoy the warmth while you're down.
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: haplo_84 on May 01, 2013, 18:55:58
where at in georgia?
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: reflexsilver on May 02, 2013, 00:02:32
Im in Sav
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on May 07, 2013, 15:03:15
Im in Sav

Dang, just got all of this. We were in Augusta.  Great wedding, little chilly, but better than the snow I had here!
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: haplo_84 on May 07, 2013, 18:43:59
Yeah man, I'm in Athens which isn't to far off and has some great country roads to ride on in between here and there.
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on May 07, 2013, 19:12:23
Yeah man, I'm in Athens which isn't to far off and has some great country roads to ride on in between here and there.

My buddy that got married rides, so one of these days I'll have to make the Trek.  I fear it would take me 40 hrs plus on a bike though, as I did 3.5-4.5hr stints in the car...not that I'm complaining :)
Title: Re: 71' CB500 monoshock with no name...exhaust in the works now.
Post by: MotorbikeBruno on May 17, 2013, 19:17:25
All right ninjas, finally got some time to work on MY ride! Woohoo!  It's exhausting...ha!

Here we go!

First group is of me chopping the stock cans from that hayabusa exhaust.  I figured..why let it go to waste?

Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on May 17, 2013, 19:18:57
And one side on the bike (haven't started the second side yet)
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: danejurrous on May 17, 2013, 19:23:17
You gunna wrap/ powder the exhaust, or something like that?
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on May 17, 2013, 19:27:09
You gunna wrap/ powder the exhaust, or something like that?

Yeah, I like to mockup everything before I decide on colors/what to do.  I always start thinking I'm going to do something, and change my mind as the bike progresses.  There's TONS of finish welding that needs to be done, I'll do that after I ride it around and decide I like it.  ;)
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: nixon on May 18, 2013, 19:34:34
Great work so far..that colour suits it..
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on May 20, 2013, 12:18:08
Great work so far..that colour suits it..

Thanks Nixon. Haven't been able to get to the other muffler yet.  Stay tuned gents.   8)
Title: Re: 71' CB500 monoshock with no name...2 mufflers finally!
Post by: MotorbikeBruno on May 23, 2013, 21:37:52
Well, the second one didn't go as smoothly as the first... >:( :(

I dropped it too...which solidifies That I have to do some "heat" shields over them since I was thinking of doing that anyways.  These bad boys hold their own as they are a little "thick" haha.  I dig em.  And she's quiet....too quiet... ;)  You won't hear me coming unless I hit it!  Which actually is kinda nice.  Video coming shortly after this, I have to edit and upload it first.

Teaser pic:


EDIT: Here's the video of me just screwing around behind the shop.  :)
http://youtu.be/WSg8OCKT_4Q
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: canyoncarver on May 24, 2013, 12:18:52
Sounds great!  Like....so.....uh a seat is next right?   ;)
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on May 24, 2013, 14:17:37
Sounds great!  Like....so.....uh a seat is next right?   ;)

Haha, yeah...I've got to get my head on that.  I find that a seat is the hardest thing to do in my opinion, they make or break a bike to me  :-\  and I prefer to make it rather than break it  ::) ;)
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on May 24, 2013, 19:25:25
Got 1.5 miles of "almost" street legal driving in!  Went to my local Honda shop to say hello to the sales team. Great group there.  Just put the original Speedometer on it, as it wasn't on for this run.  A few more shake-down runs and waiting for new jets (so I don't have non-professional DRILLED jets in there  ;) )  Then final welding, seat needs to be made, and all the "little" things of course.  Can't wait to take her off road!

Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: brewtown16 on May 24, 2013, 19:50:28
I just realized you have the battery strapped just behind the forks. wow, thats pretty inventive....
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on May 25, 2013, 12:16:51
I just realized you have the battery strapped just behind the forks. wow, thats pretty inventive....

I'm not sure if this is sarcasm or not.  So I'm going to say...Thanks!  I found the max travel on the forks/tire and made it so it couldn't hit.  Works quite well, and gets cooling.  I'll make a little case for it so it doesn't just look like a battery sitting out there, some sort of "cage" around it that looks decent. 
Title: Re: 71' CB500 monoshock with no name...seat work and shakedown
Post by: MotorbikeBruno on Jun 24, 2013, 11:10:55
All right!  I've got power and internet again!

News so far:

Started on the seat pan, foam.  And started the shakedown runs.  I tuned the bike to the completely open exhaust, and then swapped to the hayabusa headers, thinking the flow might be similar...it is definitely NOT.  It's more restrictive than I thought it would be...so I'm running insanely rich now  :P  Got about 15 miles on her, she wanted to kill at lights, but the top end of the rev range was fun!  A bit more tuning and then it's time for finish welding, paint/powdercoat on this thing.

Title: Re: 71' CB500 monoshock with no name...shakedown!
Post by: MotorbikeBruno on Jun 24, 2013, 11:12:32
She's at home in the garage. There's another 71'CB500 on the right, and a CB550 further back in the garage  ;)
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: Bert Jan on Jun 24, 2013, 12:31:52
What is the deal with the holes and rivets???
Title: Re: 71' CB500 monoshock with no name...but she runs now (vid on page14)
Post by: MotorbikeBruno on Jun 24, 2013, 14:18:00
What is the deal with the holes and rivets???

Got the idea from another member on here.  They are screw rivets.  So when I get my seat cover stitched by my wife, I can pull the material tight and screw down (with 8-32 bolts and washer) to capture the material nicely and it lays flat on the bottom.  I've tried stapling to wood in the past, gluing, and all sorts of ridiculous methods, one even looked like a corset with laces to hold it together... this seemed very clean and nice.  Now if I could just get my wife to finish up my seat cover :)  ;)
Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: Bert Jan on Jun 24, 2013, 14:21:25
oeh i'm very curious as i've gone down the same road with all sort of stupid ideas ;)
please update if you get it done! Tell the missus to hurry cause Bert is waiting ;)
Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: MotorbikeBruno on Jun 24, 2013, 14:25:29
oeh i'm very curious as i've gone down the same road with all sort of stupid ideas ;)
please update if you get it done! Tell the missus to hurry cause Bert is waiting ;)

I'll post a link to your post...maybe that will get her on it more quickly  ;D ;D  Here's the link to where I got the idea from.

http://www.dotheton.com/forum/index.php?topic=44429.45

Page 4 has their amazing work.

Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: Maritime on Jun 24, 2013, 14:28:18
You can just use the holes and rivets. I have doe 3-4 that way.  The srews are neat but won't they be hard to stretch poke hole then thread? With the regular rivets, I stretch Material, hold with one hand or use a clamp then poke a hole with an awl or ice pick right in hole, instert rivet, pop and move on.
Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: MotorbikeBruno on Jun 24, 2013, 16:22:19
You can just use the holes and rivets. I have doe 3-4 that way.  The srews are neat but won't they be hard to stretch poke hole then thread? With the regular rivets, I stretch Material, hold with one hand or use a clamp then poke a hole with an awl or ice pick right in hole, instert rivet, pop and move on.

Yeah, You are probably right.  We'll see how it goes  :)  For some reason my brain said it should be "removable" or re-stretchable if needed..I suppose if you do it right the first time, that's not necessary  ;)
Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: Maritime on Jun 25, 2013, 08:41:22
True but you can drill rivets out without messing up the pan or the fabric if you use aluminum rivets.  Either way it should work.  I would just maybe have a second set of hands to do the hole and the screw while the other is holding the fabric stretched.
Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: MotorbikeBruno on Jun 25, 2013, 13:40:29
True but you can drill rivets out without messing up the pan or the fabric if you use aluminum rivets.  Either way it should work.  I would just maybe have a second set of hands to do the hole and the screw while the other is holding the fabric stretched.

Indeed.  I'll make sure I keep that in mind while doing it.  I'm waiting on my wife to help me out with the sewing part, my stuff sucks.  She happens to be almost 5 months pregnant...so she wins a lot more than I do! haha.
Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: Maritime on Jun 25, 2013, 14:18:08
LOL gotcha, got to keep her happy!
Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: MotorbikeBruno on Jul 03, 2013, 11:53:23
We started on the seat...it's been a PITA since I got the wrong foam...and she doesn't have an industrial stitching machine....more to come on that...but I've been tuning/riding it a little bit more as we go.  Picture shows 29 miles, but I'm up to 36! haha.  I also painted the rear pipes black for now....less rusting that way :)  Next up, a rear fender/hugger thing because I think there needs to be a small splash of "color" in the back!



Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: MotorbikeBruno on Jul 13, 2013, 17:14:08
Messed up the first seat...my bad...so I'm going to attempt seat #2 tonight.  My wife is out of town so hopefully I don't destroy her sewing machine.. :)

And a few updates, pipes black for now, and a little fender added.  Front fender in the works next.
Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: Bert Jan on Jul 13, 2013, 17:18:42
seats are tough. keep at it!
Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: MotorbikeBruno on Jul 13, 2013, 23:00:55
seats are tough. keep at it!

I broke down today and started looking for an industrial sewing machine. I'll make this seat if it kills me!  On a side note, there's some killer old singer industrial machines out there...they have clutches and everything..I'm pretty stoked to add another machine to my garage.. :)

AND UPDATED:  Old singer industrial machine with table and clutch. Sorry about my ugly mug/ridiculous grin in this shot...ha!
Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: Bert Jan on Jul 14, 2013, 16:36:05
awesome score! Not get at it!
Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: danejurrous on Jul 15, 2013, 13:32:42
Bike is looking good, the rear fender ties it all in nicely.
Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: MotorbikeBruno on Jul 15, 2013, 14:52:23
Thanks Danejurrous, I appreciate it.  I felt it needed a little color in the back!  I'm going to whip up a front fender next when I get some time.  Also, the bike is not charging correctly :(  and since I have a brand new Reg/rec...I'm going to assume it's the stator bits. Ugh.  Good thing I've got 2 parts cb500/550's in the garage :) 

Will keep you guys updated on the seat Bert!  I'll see if I can persuade the wife to help me this evening!  ::) ;) ;D
Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: Bert Jan on Jul 16, 2013, 06:48:44
Not loading correctly? What are the symtoms? Dont want to brag but i know a lot about that on 500/550's
Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: MotorbikeBruno on Jul 16, 2013, 11:59:31
Not loading correctly? What are the symtoms? Dont want to brag but i know a lot about that on 500/550's

Hey I'll take all I can get!  Honestly I am unsure of the exact issue, as it just seems to slowly drain the battery to death.  My tail lights are LED's, I've got no other "lights" other than the stock headlight  ???

I'll be able to drive it 30 miles or so and then it starts cutting spark is what it seems.  I reach up, shut the headlight off and she runs "fine" although the battery is down to 8-10 volts at that point.  I haven't even started to look at testing the stator or anything, haven't found the time.  I think I'll start there as I have a new Reg/Rec, and it's hooked up properly.
Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: MotorbikeBruno on Jul 24, 2013, 15:37:07
Time is getting scarce, my first child is 15 weeks away so my wife has me doing tons of stuff....BUT an update there is!

Figured out how to thread the bobbin, and the needle, and finally my new presser feet came in..er..roller feet!  Fit for making a seat I think! 

So now my excuses have dwindled to: Bruno get the damn seat done you slow ass, nothing is stopping you.   8) 8) 8) 8) 8)

Title: Re: 71' CB500 monoshock with no name...working on the seat now :)
Post by: MotorbikeBruno on Aug 25, 2013, 17:42:46
So...my sewing machine hates me right now. Broke 2 needles and need to figure out how THAT machine works now..haha oh well.

So in the meantime. Playing with needle heights to see what might cure my slight hesitation in the middle rev range.  Then I decided to get a front fender going!  So far 60 miles on the beast!  And I got a headlight switch in there...that stock light draws tons of power :(

Bruno

Title: Re: 71' CB500 monoshock with no name...Fenders finished
Post by: MotorbikeBruno on Aug 27, 2013, 11:18:45
Painted the fender and got it back on. Not bad  ;D

Title: Re: 71' CB500 monoshock with no name...Fenders finished
Post by: Rich Ard on Aug 27, 2013, 12:19:56
Almost there man - and it's looking good.
Title: Re: 71' CB500 monoshock with no name...Fenders finished
Post by: MotorbikeBruno on Aug 27, 2013, 12:59:03
Almost there man - and it's looking good.

Thanks man!  Then all I have to do is completely tear it back down again to finish weld and powder the frame etc... :) haha.  Gotta love projects eh?
Title: Re: 71' CB500 monoshock with no name...Fenders finished
Post by: butzer489 on Aug 27, 2013, 18:11:19
Looks slick dude. She's an eye catcher for sure.
Title: Re: 71' CB500 monoshock with no name...Fenders finished
Post by: MotorbikeBruno on Aug 28, 2013, 11:19:37
Looks slick dude. She's an eye catcher for sure.

Thanks! Some "old" guys were looking at it this morning when I stopped for gas.  They said some nice things and I asked if they had bikes and he points to a trailer behind his truck.  All original CB750 chop from the 70's  I wish I would have remembered some of the names of people that had worked on it...dang.  Something about vader rims or similar?  They were pretty cool 10 spoke in the front and 5 in the rear. Front end was round girder with disc brake, and rear swingarm was chrome and rear also had disc conversion.  And next to that was a nice Triumph.  They were headed to a swap meet down south of us.  Nice guys!

On a side note:  Either the headlight has too much draw, or I am not charging properly..or both.  I ran it 2 days without any problems. Went to kick it over to leave the gas station and had to shutoff the headlight and kick 10 times....I normally need 1 kick to start, even from sitting a few days.  So it's really time to sort that out.  Ugh.  Just got the news my car will be at the shop another week...so I REALLY  need to get it figured out now! haha

Bike had these mags, but was a CB750 engine. Kicking myself for not taking a picture!  Thought I would throw in the second pic with the girl to have a period correct chop pic too :)
Title: Re: 71' CB500 monoshock with no name...Fenders finished
Post by: canyoncarver on Aug 28, 2013, 13:59:01
Those are invader wheels.  Pretty cool.

Title: Re: 71' CB500 monoshock with no name...Fenders finished
Post by: MotorbikeBruno on Aug 28, 2013, 15:15:31
Those are invader wheels.  Pretty cool.

There we go! I thought someone here would know.  They were cool looking. The front disc was MAYBE 5 inches in diameter :)   It had the coffin tank and seat like the first chop above.  In a 70's mettalic orange paint job. Thanks for the info Canyoncarver!
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 03, 2013, 13:19:43
Now on to my "charging" issue.  The issue is that it appears to check-out just fine!  Yet when the headlight is turned on, even at higher RPM's the battery slowly drains and by slowly, I mean very slowly, but if I take a 40 mile ride, it might start getting too low and cutting spark out if I leave the headlight on.  Just to be sure, here's some pics of me checking the electrical.  First pic is of the 3 yellow wires.  Nothing touches ground, so from what I know, that means all is OK.  They all Ohm to 1.1ohms between eachother.

The other thing I was told to check was the Green and White wires. That Ohm's at 5.8 or so.  I read anything from 4-8ohms is "good"  So I feel like I can rule out the Stator as the problem correct?

Next up, I have a brand new reg/rec unit.  I truly haven't checked this out and will do so today.  Not really sure what to look for on this one, so I'll have to do some more research.  If anyone has any numbers handy, I'll take them, I've been crazy busy as of recent, and with all my bikes down, and my car down...I have nothing that moves except this bike...which I'm charging when I get home, and when I get to work..haha.  Thanks for anything in advance!!!
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: danejurrous on Sep 03, 2013, 13:31:15
Ohms is one way to look at the stator but there are other avenues that will give you the best info on if it is bad. Did you check the voltage output on the stator with the bike running through the rev range?
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 03, 2013, 13:41:36
Ohms is one way to look at the stator but there are other avenues that will give you the best info on if it is bad. Did you check the voltage output on the stator with the bike running through the rev range?

Yeah, it would go to 13.5+ volts above 3000rpm (which is normal)  but that's with the light off...then I hit the light and I can watch the numbers slowly go down.  I did just notice that the new rec/rec needs 12V in to the black wire and I did NOT have that...so I just put 12V to it when the bike is switched into the ON position. I'll report back, but I'm assuming that failure on my part was at least SOME part of the problem :)
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: Maritime on Sep 03, 2013, 13:52:19
It should go to well above 14 volts with the light on above 3K and almost 15 at redline.  My GL runs at 14.4 all rpms with full old fashion lights.
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 03, 2013, 14:23:15
It should go to well above 14 volts with the light on above 3K and almost 15 at redline.  My GL runs at 14.4 all rpms with full old fashion lights.

SH*T then I've got problems.  I ran the 12V to the reg/rec and haven't had a chance to test it. Hopefully at my 2 o'clock break I can get out and putz around with a meter...thanks for the heads up Maritime!
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: Maritime on Sep 03, 2013, 14:28:22
Use your meter and check battery before start, resting should be around 12.8 V, then fire it up and see what it is, should go to 13+ at idle which will run the bike and maybe break even, rev it and  after 2500-3000 it should go over 14 and if you get past 15 you can ruin your battery so it should stop at under 15. If you don't get the increase it is your stator not putting out the required juice, if it goes past 15 you have a bad regulator.  If it doesn't read right after starting your rectifier may not be converting from AC to DC
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: Rich Ard on Sep 03, 2013, 14:50:10
Use your meter and check battery before start, resting should be around 12.8 V, then fire it up and see what it is, should go to 13+ at idle which will run the bike and maybe break even, rev it and  after 2500-3000 it should go over 14 and if you get past 15 you can ruin your battery so it should stop at under 15. If you don't get the increase it is your stator not putting out the required juice, if it goes past 15 you have a bad regulator.  If it doesn't read right after starting your rectifier may not be converting from AC to DC

Honda spec in the early 70s was 15.5V, so it may very well go up that high. Not so good for modern batteries, so it's an argument for eventually replacing it so you can get several years out of a battery instead of a couple.
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 03, 2013, 15:47:26
Honda spec in the early 70s was 15.5V, so it may very well go up that high. Not so good for modern batteries, so it's an argument for eventually replacing it so you can get several years out of a battery instead of a couple.

The funny thing is that I know all about charging systems from my stupid Aprilia RSV1000...I'm on my 5th stator on that beast because Denso effed up and made a 500W rotor instead of 370W...and Aprilia wants us to cough up $1250 bucks for a new rotor that they got for FREE from Denso because they screwed up. Anyways, I digress....for some reason my brain thought 13.5V was good enough...knowing that it's usually 14.3V or higher really ugh. It's been a hell of a month for me.  Thanks for the kick to the head gents! I'll get you the news when I get on my break in 15 min!
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: Maritime on Sep 03, 2013, 15:49:30
LOL We have all been there.  I am fresh off replacing the alternator on a 2007 RAV4 and just did all those checks.
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 03, 2013, 16:25:51
LOL We have all been there.  I am fresh off replacing the alternator on a 2007 RAV4 and just did all those checks.

Haha yep, stupid charging systems!  >:(   Wait...without them we couldn't get far... :o  haha. 

Here's the results.  I think the pictures speak for themselves.  And my current thought is that there is something wrong with the battery.  14.5V at higher rpm. But when you let off that throttle, it dips right back down to 12V range with the headlight on.  Somehow the battery can't handle that kind of draw...so I'm going to have it checked out. Borrowing a co-worker's car to get another one (should be warrantied....)  Wish me luck.

Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 03, 2013, 17:04:23
What the EF.  Results "show" the battery is NOT the problem.  Ugh.  Forgive me for asking a stupid question...but can an "old" headlight draw more energy than a "NEW" headlight if they are both 55W or 35W etc. 

Lastly, it should stay above 13V with the headlight even at idle don't you think?  Should I be looking at some other output?  I've verified that they all are considered "working"  Stator  (check) Regulator/rectifier..(check) and Battery... (check)  I took out all unnecessary switches or connections too!  Any other thoughts!?  (I'll take anything not involving a sledge hammer please :))
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: kopcicle on Sep 03, 2013, 17:23:42
Quote
You can "hot wire" the alternator to see if the regulator is acting up from burned/pitted points: jumper between the BLACK and WHITE wires at the regulator and ride for a while. This traps the field coil to full current to max out the alternator, and will not hurt it. It will also make the lights dim more at stopsigns, because the field load is not being dropped out at low speed.

from

http://forums.sohc4.net/index.php?topic=65525.0 (http://forums.sohc4.net/index.php?topic=65525.0)

~kop
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 03, 2013, 17:52:41
from

http://forums.sohc4.net/index.php?topic=65525.0 (http://forums.sohc4.net/index.php?topic=65525.0)

~kop

Do you mean the Points as in the ignition points? Under the front right engine cover on my CB500?  I have brand new points, timing is dead on, and new condensers as well.  Or are they saying the points being the connections on tthe reg/rec....because that is ALSO brand new solid version.

Thanks for the link though Kop.

Edit: looks like they are talking about the electromechanical regulator points? 

I HATE to ask...but what about some sort of lower wattage headlight bulb...say HID style?

http://www.ddmtuning.com/Product-Categories/Motorcycle-HID-Kits-Lighting
and this to prolong life? eh?:
http://sohc4shop.com/catalog/product_info.php?cPath=23&products_id=46

Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: kopcicle on Sep 03, 2013, 18:33:34
Yes HID , and even LED . Who knows , by the time you get around to searching it (Matt has already done some of the work) there may even be a viable led option .

And , yes the points in the regulator . Do a little searching and you'll find they are adjustable but a bit tricky .

~kop
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 03, 2013, 18:59:44
Yes HID , and even LED . Who knows , by the time you get around to searching it (Matt has already done some of the work) there may even be a viable led option .

And , yes the points in the regulator . Do a little searching and you'll find they are adjustable but a bit tricky .

~kop

Well, I've eliminated that with this already, so that won't be necessary :)  :  http://4into1.com/ricks-motorsport-electrics-honda-rectifier-regulator-combo-cb350-cb400-cb500-cb550-cb750/

I'll keep searching.  I don't want to pay $200 for an LED headlight...those bad boys are spendy!  I enjoy the stock headlights looks actually.  ;)
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: Sonreir on Sep 03, 2013, 19:40:12
LED headlight on SOS.
12W draw with high beam on.

Cost me just under $100 after import from the UK because I get trade prices.  ;D
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 04, 2013, 11:21:44
Quote
LED headlight on SOS.
12W draw with high beam on.


That's pretty cool man. I like the look on yours.  Do they make something that would fit into the stock old headlight bucket :)  haha  I really like the "old" look to mine.

Update: Last night when I got home I checked voltage = 13.2V    and today coming in to work voltage = 13.2V   So I feel like it's charging now!  I do shut the light off at stop lights though  ::) :P  I've got a little LED volt display coming in from China...haha so that should allow me to relax a bit. 

On to the "next" issue.  At idle, the bike wants to race up slightly, and then practically die if I don't hold the throttle up a bit.  I have a Gunson Colortune and at idle it is spot on, and just about rich.  I haven't adjusted the valve clearances for a bit (almost have 300 miles on it as of today)  and the last time I checked them was at 50 miles since I thought they might have seated by then.  I did have the seats ground etc from a known guy in my parts.  He does a lot of vintage tractors so his shop is pretty cool.  I will also note that I just synchronized the carbs and it was idling fine when I did that...
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: Bert Jan on Sep 07, 2013, 19:19:27
Haha yep, stupid charging systems!  >:(   Wait...without them we couldn't get far... :o  haha. 

Here's the results.  I think the pictures speak for themselves.  And my current thought is that there is something wrong with the battery.  14.5V at higher rpm. But when you let off that throttle, it dips right back down to 12V range with the headlight on.  Somehow the battery can't handle that kind of draw...so I'm going to have it checked out. Borrowing a co-worker's car to get another one (should be warrantied....)  Wish me luck.

tear apart 3 of your meters and use the parts to fix the problem. A-team for the win!

no serious, ditch the stock crap and get the RR24 combined reg/rec for around 100 bucks. fix and forget. trust me, best buy you'll do on the bike.
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 08, 2013, 13:29:19
tear apart 3 of your meters and use the parts to fix the problem. A-team for the win!

no serious, ditch the stock crap and get the RR24 combined reg/rec for around 100 bucks. fix and forget. trust me, best buy you'll do on the bike.

Bert, I already have that! (see picture)  Found the problem, it appears there is supposed to be 12V going into the Black line....and it was NOT, as my harness is now "custom" to my bike.  Fixed that and we're all good.  Waiting on needles for my machine to try the damn seat again.  Working out the bugs as I go.  Over 300 miles on her so far in her current state :)
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: mlinder on Sep 15, 2013, 21:29:20
You'll probably hate me for saying this, this late into your build, but the monoshock angle you have is bad from a physics standpoint. It could just be the angle of pictures, though.
Maybe someone said something already, but I haven't real all 17 pages.

If you feel inclined, and have the time sometime, angle the monoshock mount struts on the swingarm up a few degrees, so that the angle of the mount struts and the shock do not pass 180 degrees at full compression.

I could go into why, but it's the common non-levered practice, and makes practical sense in terms of physics.

Fun build overall though, nice work.
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 16, 2013, 13:29:25
You'll probably hate me for saying this, this late into your build, but the monoshock angle you have is bad from a physics standpoint. It could just be the angle of pictures, though.
Maybe someone said something already, but I haven't real all 17 pages.

If you feel inclined, and have the time sometime, angle the monoshock mount struts on the swingarm up a few degrees, so that the angle of the mount struts and the shock do not pass 180 degrees at full compression.

I could go into why, but it's the common non-levered practice, and makes practical sense in terms of physics.

Fun build overall though, nice work.

I measured rake and trail and it falls within the guidelines for a good handling bike (it has surgical knive-like handling and great stability at higher speeds).  As for full compression, the shock moves less than half an inch...with me on it/full load.  It was designed for a 800lb+ motorcycle and is really almost as stiff as using a metal bar in there, I  should have just made it a hardtail :)  Thanks for the heads up though, I am fairly confident I won't have any issues in the future as this shock doesn't do what other much softer shocks would. (for example...compress! haha)
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: mlinder on Sep 16, 2013, 18:35:06
Yeah, I wasn't talking rake and trail, was talking leverage, radii, stress and all that other good shit.
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 16, 2013, 20:43:07
Yeah, I wasn't talking rake and trail, was talking leverage, radii, stress and all that other good shit.

Ah, word. That isn't necessarily in my job title.  Can you draw on a picture to show me what you mean by the 180degree comment? 
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: mlinder on Sep 16, 2013, 20:44:07
Sure, ill make a quick 3d sketch here in a few.
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: xb33bsa on Sep 16, 2013, 20:58:23
It looks as if your lashup may have a falling rate,and is actually starting out "over center", well under center really but the rate is falling
the shock lower mount should be signifincantly above a line drawn thru the axle and top mount ,when shock is bottomed this should still be above that line
this insures a rising rate,even if nearly flat when seen on a graph
the modern single shock linkage has a carefully designed rising rate usually on a curve that climbs much steeper near bottom out, without a linkage the rate will be straight and not very steep, i think
but what you do not want is a falling rate this means as rear wheel travel progresses the shock has more leverage advantage applied to it, the opposite of what you want

 
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 16, 2013, 21:31:20
It looks as if your lashup may have a falling rate,and is actually starting out "over center", well under center really but the rate is falling
the shock lower mount should be signifincantly above a line drawn thru the axle and top mount ,when shock is bottomed this should still be above that line
this insures a rising rate,even if nearly flat when seen on a graph
the modern single shock linkage has a carefully designed rising rate usually on a curve that climbs much steeper near bottom out, without a linkage the rate will be straight and not very steep, i think
but what you do not want is a falling rate this means as rear wheel travel progresses the shock has more leverage advantage applied to it, the opposite of what you want

Let's put that ^^ into things that make sense.  My "lashup" is not a term the average person knows. Here's what I'm asking for. A simple drawing. I used different colors so you could explain what you are talking about in layman's terms.  ;) ;)  From what I'm gathering, you are saying to have the bottom shock mount raised up above the line (BLUE line on drawing) correct?  I chose to put it in-line because it would have less torque on the weld joints if they were sitting on top. They are in-line for that purpose, the picture makes it look like it's drooping below slightly, and it's not as drastic as this shot looks because of the angle it was taken at.  I'd say it's almost perfectly in line but I'll go check when I get home.  Thanks for the input!

Also, don't forget, this spring will never "bottom out"  It's so insanely stiff for this bike that it BARELY moves under any amount of stress/bumps/potholes.    And note again that the pictures aren't perfectly from the side, so you will see some "deflection".  I'll take your thoughts into consideration, although this particular shock was not mounted like the other sport bike shocks you see, it was mounted similarly to what is there, both top and bottom are allowed to move, unlike the sportbike shocks that have ONE stationary point and use a linkage. This is why I chose this non-sport bike version over a CBR shock.   
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: mlinder on Sep 16, 2013, 21:36:53
It looks as if your lashup may have a falling rate,and is actually starting out "over center", well under center really but the rate is falling
the shock lower mount should be signifincantly above a line drawn thru the axle and top mount ,when shock is bottomed this should still be above that line
this insures a rising rate,even if nearly flat when seen on a graph
the modern single shock linkage has a carefully designed rising rate usually on a curve that climbs much steeper near bottom out, without a linkage the rate will be straight and not very steep, i think
but what you do not want is a falling rate this means as rear wheel travel progresses the shock has more leverage advantage applied to it, the opposite of what you want

 

Exactly. Thanks man, I'll stop CADing now :)
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 16, 2013, 21:41:20
Exactly. Thanks man, I'll stop CADing now :)

Haha, I'm cool with it, I love to learn.  I just edited my above to see if that's correct.  Check that again if you wouldn't mind.  I'm heading home now. I'll catch your responses in the morning.  :)
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: mlinder on Sep 16, 2013, 21:45:08
Let's put that ^^ into things that make sense.  My "lashup" is not a term the average person knows. Here's what I'm asking for. A simple drawing. I used different colors so you could explain what you are talking about in layman's terms.  ;) ;)  I appreciate it!

Also, don't forget, this spring will never "bottom out"  It's so insanely stiff for this bike that it BARELY moves under any amount of stress/bumps/potholes.    And note again that the pictures aren't perfectly from the side, so you will see some "deflection" I would think.  I'll take your thoughts into consideration, although this particular shock was not mounted like the other sport bike shocks you see, it was mounted similarly to what is there, both top and bottom are allowed to move, unlike the sportbike shocks that have ONE stationary point and use a linkage. This is why I chose this non-sport bike version over a CBR shock.   

OK, that is a good photo and drawing of what I'm talking about. That should be a 180 degree, that is, straight, and mo more (though less is probably fine in this case) line fully loaded and coming down hard at 60mph from a 30 foot long jump you just did from a giant speed bump. The blue line is the only one we care about in this case.

The angle is the wrong way right now.

Angle the support bar up enough to get your angle of where it and the shock meet to an angle in the OTHER direction.

It has nothing to do with the fact that both sides of the shock are "hinged", it has to do with compression rate, compression depth, and greater linearity in shock compression.

You can weld, it's an easy fix, and should you ever decide to get a shock back there that makes sense, you'll be MUCH much happier.

Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: mlinder on Sep 16, 2013, 21:51:27
And really, xb33bsa is right, there should still be less than 180 degree angle (at the bottom) with you, your girl, and 100 pounds of camping gear on your back whilst jumping up and down on it, at it's lowest point. You never want the amount of force from the shock to decrease as the inside angle increases, which is what happens when your suspension setup is "upside down", like yours is.
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: xb33bsa on Sep 16, 2013, 22:15:05
 ;)
I would not worry about it tho until you get a shock/spring combo  that actually moves, carry on and keep up the good work
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: mlinder on Sep 16, 2013, 22:18:09
I'd do it now while the bike isn't complete O_o
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 17, 2013, 16:39:27
Thanks for all the words.  I'll see if there is a way for me to "fix" it when I fully weld the rear end together.  I'm worried if I change that, all of my rake/trail stuff will change, which would be bothersome...because it handles like a dream...it just hurts my back! hahaha

Just to be clear.  I think you are saying the lower shock mount should go UP slightly from where it is at now (in-line) correct?  Or did I read that wrong and it should go DOWN towards the ground?  I'll do what I can, but like I said before, that spring is solid. haha
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: xb33bsa on Sep 17, 2013, 16:43:28
yes up
why not get a shock that works ? or at least a lighter spring ?seems a shame you did such nice work but the ride sucks
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 17, 2013, 16:56:09
yes up
why not get a shock that works ? or at least a lighter spring ?seems a shame you did such nice work but the ride sucks

Well it's actually not THAT bad, which is why I kept it.  The main issue is space and shocks that are designed to be mounted and used like this.  All of the CBR and sportbike shocks are designed for the linkages, they are also 4+ inches longer than this bad boy.  The other issue was price. At the time, any of the shocks that were designed to be used this way were pretty expensive.  I'm relatively happy with it overall, I'm just not as young as I used to be, and the sportbike is taking its toll as well :) haha
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: xb33bsa on Sep 17, 2013, 17:44:42
designed for a linkage ? don't worry about that,try and find one that has correct spring, travel and length whether or not it is used with linkage is of no matter
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 17, 2013, 17:52:50
designed for a linkage ? don't worry about that,try and find one that has correct spring, travel and length whether or not it is used with linkage is of no matter

From the myriad of posts that was something that was very notable. Do NOT use a linkage type shock in a straight design.  I suppose I'll keep it as-is for now and try to change the mounting point a bit as mentioned.  I do not see it being a problem, but there's a difference between good and bad design I suppose  :-\  Onward!  ;D
Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: xb33bsa on Sep 17, 2013, 17:58:28
From the myriad of posts that was something that was very notable. Do NOT use a linkage type shock in a straight design.  I suppose I'll keep it as-is for now and try to change the mounting point a bit as mentioned.  I do not see it being a problem, but there's a difference between good and bad design I suppose  :-\  Onward!  ;D
ive seen all kinds of conversions that use a shock from a linkaged lashup and running without linkage,and it works fine, there is no reason not to do it
many have done it on the TL's to loose the terrible stock setup

Title: Re: 71' CB500 monoshock with no name...electrical hiccup?
Post by: MotorbikeBruno on Sep 17, 2013, 18:12:51
Live and learn I suppose.  Must have been some grumpy old guys talking about math and doing poor calculations. Thanks for the heads up and help so far gents.
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: MotorbikeBruno on Oct 25, 2013, 13:06:32
I looked and yes the force is on the downside and shouldn't be there.  I'll change that over the winter here to make it work correctly and then get the frame cleaned up/powdercoated/painted etc.  Much appreciated.  In the mean time.....I was having issues getting it to idle properly.  I have the stock pilot jet in there, and 105's for the mains.  Turns out that the stock pilots are too RICH?  So now I'll have to go back and verify that they are in fact stock and not drilled out previously etc.  That's what winter is for right?  Either way, I wasn't even on the scale for my Air-to-Fuel ratio (under 10)  I was able to get it up to 11.9 or so by turning the mixture screws lean at 4 turns and that wasn't even enough to really get it where I want it  :o  (which means I need a lower pilot jet most likely #38 ) 

The good news is that it idles nicely now and doesn't die at street lights anymore...which is amazing since it's kickstart only for now  ;)

Here's more pics, as if I didn't post enough right?  :-X

Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: MotorbikeBruno on Oct 25, 2013, 13:07:56
And the gauge.  21 shows when the sensor has warmed itself up enough to be used.  One step closer!
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: canyoncarver on Oct 25, 2013, 13:10:23
This just got alot more interesting. 
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: Maritime on Oct 25, 2013, 13:34:39
Wow, cool Bruno, that will make it a lot easier to get the jetting right I bet, no more pulling plugs and guessing for sure.
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: ronnie on Oct 25, 2013, 13:37:07
I'm not sure if it was discussed or if it was posted, but what gauge is that and what o2 sensors are you using (gm wide band?)?

Sent from my HTC6500LVW using Tapatalk

Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: MotorbikeBruno on Oct 25, 2013, 14:37:50
Thanks guys.  I clean carburetors for people on the side (www.motorbikebrunos.com) up here in MN.  I've had a few people ask if I could "tune" their carbs.  I said I would rather not as it takes quite a bit of time, and I have less of that as the days go by (first little one on the way T-minus 1 week!) 

So here was the answer "wideband O2 sensor"  which have finally come down in price! Not "cheap" but I see so many carburetors that I'd like to get them all the best I can.  I've got the Bung version for MY personal bikes and weld the bungs in,  I also have the tail-pipe clamp version too for customers that want it, but do not want to weld in a bung. I'm just getting into the tuning aspect of the carbs so it's going to be a fun ride for sure!

I went with the ZT-2 and snagged a gauge on Ebay for $40 lower than Zeitronix wanted it. So I can see it in real time as I drive. It will help me find and eradicate those flat spots  ;D ;D ;D

http://www.zeitronix.com/Products/zt2/zt2.shtml

It was a toss up between Innovate's product and this one.  In the end I'm very happy so far with my purchase of the Zeitronix, the other guys were short and annoyed with any emails I sent. (It wasn't any sort of dumb question you can answer if you read the website )   BUT this is where I got the muffler clamp from since it's nice and easy for customer bikes.... http://www.innovatemotorsports.com/xcart/home.php?cat=250

 
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: ronnie on Oct 25, 2013, 14:57:30
Thanks a bunch, yeah I don't like short snippy answers from vendors, I find it unprofessional. Now you said the clamp on gets it really tuned in. I was planning on putting sensors on my 400f to get the CRs dialed in. I figured the sensor on each cylinder would be more accurate than a sensor at the tailpipe getting info on all cylinders at once..  Am I wrong in that assumption?

Sent from my HTC6500LVW using Tapatalk

Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: MotorbikeBruno on Oct 25, 2013, 15:16:25
Thanks a bunch, yeah I don't like short snippy answers from vendors, I find it unprofessional. Now you said the clamp on gets it really tuned in. I was planning on putting sensors on my 400f to get the CRs dialed in. I figured the sensor on each cylinder would be more accurate than a sensor at the tailpipe getting info on all cylinders at once..  Am I wrong in that assumption?

Sent from my HTC6500LVW using Tapatalk

No problem. (I fixed the post above, sorry for the confusion) The WELD in is what is best, but I can't weld a bung in every customer's bike that wants it :)  So it's more of a general tuning at that point, which is better than not knowing anything.  But yes, if you notice where I put mine, I welded it into the joint pipe of cylinders 3/4 so I'm reading 2 of the 4 cylinders.  You don't want to have the sensor too close to down pipes as they get too hot and can shorten the life of the O2 sensor greatly.   I'll do another bung on the 1/2 carbs if I feel I need it.  If you are REALLY looking to tune each carburetor perfectly, you would weld a bung in each pipe and go through and take readings from each one.  Driving on the street tells you far more than when it's just "sitting" there idling or you are twisting the throttle.

I got my weld-in bungs on ebay,  The curved ones are slick!  But don't forget you will need a bung cap to go with it for another 4-5 bucks when you aren't using the system.

http://www.ebay.com/itm/O2-Oxygen-sensor-bung-02-fitting-wideband-nut-PRE-CURVED-LESS-WORK-Better-Fit-/231035380140?pt=Race_Car_Parts&hash=item35cac821ac&vxp=mtr
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: ronnie on Oct 25, 2013, 18:14:29
Ah, great thanks for the tips. Yeah, I saved that auction so IL have it later on. Hopefully I'll be at this point by spring time. Much obliged man

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Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: MotorbikeBruno on Oct 26, 2013, 15:16:50
Not a problem, I'm  hoping I can save a few bucks here and there and finally get the frame taken care of etc. so it's all done in the spring.  I'll Garage-test in the winter with the O2 setup until I "think" it's right and then in the spring I'll verify.  And by that time I should have my other 71 cb500 and my OTHER 76' CB550 ready to roll too :)  I keep finding free/killer deals on these things....ha!  Let me know if you have any questions or need any more info about the system.  If you were near me I would have been glad to help you out personally! haha
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: ronnie on Oct 26, 2013, 21:18:24
Haha yeah, I have to let things go because I know if I don't I'll more than I can handle with bikes haha! But Yea man, I appreciate the help and when I get there I'll probably have questions. Keep it up though!

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Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: MotorbikeBruno on Oct 27, 2013, 14:22:02
Haha yeah, I have to let things go because I know if I don't I'll more than I can handle with bikes haha! But Yea man, I appreciate the help and when I get there I'll probably have questions. Keep it up though!

Sent from my HTC6500LVW using Tapatalk

Sounds good! 

I drove it to my work for it's final resting place as-is...(aka heated work space for the winter!)  Time to swap out or fix that rear shock angle, finish the frame, finish the swinger and start tuning the thing.  She rides nice at 70mph all the way to the shop.  Couple of stumbles on the low end, but I assume that's from having the mixture screws 4 turns out...which is really a band-aid until I get some smaller pilots.
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: Sonreir on Oct 27, 2013, 16:04:14
I'm not meaning to be the bearer of bad news, but you really want that sensor located on the exhaust headers.  Too far down stream and you're going to be getting lean readings even when the bike is running fine.  Fresh air actually gets sucked back up into the exhaust between pulses and the closer your get the sensor to the exhaust port (within reason), the better your readings will be.
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: teazer on Oct 27, 2013, 16:33:50
Matt, it's true that too close to the open end of the pipe creates false readings, but where it's at should be fine.  In the headers it will probably overheat.  The right place for it is in the collector/s.

For peak power you don't want 14.7:1, you want about 12:1 or even richer, but for peak economy you are looking for about 15/16:1.  At idle 14 is OK but 12 or 13 is usually better.  The reason is probably that as you crack the throttle open, the motor needs more gas to accelerate but it goes momentarily lean as the slides rise and air rushes in faster than fuel.
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: MotorbikeBruno on Oct 27, 2013, 16:35:03
I'm not meaning to be the bearer of bad news, but you really want that sensor located on the exhaust headers.  Too far down stream and you're going to be getting lean readings even when the bike is running fine.  Fresh air actually gets sucked back up into the exhaust between pulses and the closer your get the sensor to the exhaust port (within reason), the better your readings will be.

That may be true for a car sensor, but the instructions on the kit specifically say NOT to put them near where the headers come out.  I'm not disagreeing with you, as the O2 sensor we put on my father's airplane engine (experimental Bede-5 using a geo metro engine) is only a few inches from the exhaust port.  For some reason the kit said it shouldn't be within 16 inches of it?  Or maybe I read that wrong?  I'll have to go back and have a look. I remember I did it for a good reason, even though I know otherwise from the other engine stuff.  As for lean readings...well that means I'm insanely rich, being that it read a very rich 11.9 with my air screws maxed out.  :(   I'll keep you updated.
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: Bobby Joe on Dec 10, 2013, 16:49:24
This is probably my favorite looking monoshock conversion.  nice work. 
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: Sonreir on Dec 10, 2013, 16:57:38
That may be true for a car sensor, but the instructions on the kit specifically say NOT to put them near where the headers come out.  I'm not disagreeing with you, as the O2 sensor we put on my father's airplane engine (experimental Bede-5 using a geo metro engine) is only a few inches from the exhaust port.  For some reason the kit said it shouldn't be within 16 inches of it?  Or maybe I read that wrong?  I'll have to go back and have a look. I remember I did it for a good reason, even though I know otherwise from the other engine stuff.  As for lean readings...well that means I'm insanely rich, being that it read a very rich 11.9 with my air screws maxed out.  :(   I'll keep you updated.

Do what the kit says, but I've never heard of having one down so low.
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: Roc City Cafe on Dec 10, 2013, 17:59:05
I run mine a hair behind the collectors (to average all cylinders) and have tuned just fine, with an open pipe it may be different, but with a proper muffler, it seems to be accurate.  As far as power, on these old bikes I've found 12.5 or so to be dead nuts fastest, any richer and they seem to stumble.  As far as tuning in the garage, well... it's not going to do squat for you, if the bike isn't under load, then all you're tuning is your 0-1/16 throttle.  You need to ride it to tune, even with an o2 sensor.  the o2 sensor is just going to keep your tuning efforts headed closer to the right direction than purely "feel". 
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: brad black on Dec 14, 2013, 00:55:50
while the gauge looks cool, it's really worth getting a data logger set up if you want to do it professionally.  throttle position can be hard to read in an accurate sense for many carb set ups, but you can use a map sensor as a simple indicator.  trying to read a gauge and remember it all while not running into shit is rather hard, esp if you're riding something fast.  data logger means you can just ride.

although at some point you realise a dyno or the track are much more conducive to your safety and ability to keep a licence.

a co meter is much better for idle too (the wide band systems seem to respond a bit too quickly for a decent reading possibly, just not very accurate).  you should be able to find a car workshop with a 4 gas analyser to do the co.

welding a plug into each exhaust is the only way to do it.  just make it part of the job.  otherwise you'll need a long tube down the tailpipe to get a decent realistic reading and to reduce time delay, etc.

Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: MotorbikeBruno on Dec 23, 2013, 18:30:22
I run mine a hair behind the collectors (to average all cylinders) and have tuned just fine, with an open pipe it may be different, but with a proper muffler, it seems to be accurate.  As far as power, on these old bikes I've found 12.5 or so to be dead nuts fastest, any richer and they seem to stumble.  As far as tuning in the garage, well... it's not going to do squat for you, if the bike isn't under load, then all you're tuning is your 0-1/16 throttle.  You need to ride it to tune, even with an o2 sensor.  the o2 sensor is just going to keep your tuning efforts headed closer to the right direction than purely "feel".

Great info thanks. Roc City!  I know that just "sitting" there and blipping the throttle won't be the correct way.  My goal is to get the data logger for this, set up my gopro and have a ride.  That way when I throw up the graph on the computer, I can fire up the go pro and see EXACTLY what is going on and when.  Was I passing a car? Was I running down hill? Uphill? Etc.  I'm not setting the bikes I ride up for racing, so being so dead on isn't what I'm going for. I'm going for drive-ability and fun factor of course.  Oh and Brad, I've got a Co gas analyzer as well. I got it for free from a buddy who knew someone closing up shop.  I'll have to read how to use the darn thing as it probably isn't just plug and play right?  Again, this isn't for a race bike, it's for a bike that runs better than most who just throw jets at it and deal with the huge pitfalls of not using the stock airbox etc. 

It will be nice to finish this thing up and really get into it in the spring.  We had our first kid 7 weeks ago, and I spend all my free time with him now! :)

Thanks again for all of the thoughts/comments/constructive criticism.  Great things come out of all of those...one being the rear shock is definitely angled improperly and must be fixed before final welding.

A couple of pics of the new wrench in the house! His name is Theodor , we just call him Thor for now.
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: The Jed on Dec 23, 2013, 19:06:45
Fuckin A! congrats man, good lookin kid.
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: danejurrous on Dec 23, 2013, 19:34:32
Congrats man that's pretty awesome!
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: acm177 on Dec 23, 2013, 19:40:20

A couple of pics of the new wrench in the house! His name is Theodor , we just call him Thor for now.


Amazing what you can build in one night!
Congrats!
Title: Re: 71' CB500 monoshock with no name...O2 sensor success!
Post by: MotorbikeBruno on Dec 23, 2013, 20:31:41
Amazing what you can build in one night!
Congrats!

Haha...I suppose it was one night in the beginning for me... ;)

Thanks gents! It will be great to get working on the projects again, knowing I've got some killer "little" bikes to make eventually! I've got an electric one in mind...and I've got a few years to design it!  :)
Title: Re: 71' CB500 monoshock with no name...New shock...
Post by: MotorbikeBruno on Apr 19, 2014, 17:50:51
After first kid and 5 months later...I get a minute to work on the mono again.  I've decided the shock was too heavy after 400 or so miles. My wife confirmed :)  as she is back on two wheels as well!

Trying a slightly "smaller" shock from an EX 250 Ninja.  I figured it is similar in weight to my CB500 and should be a little more forgiving on my back.  The only problem is that it's several inches longer.

I mocked it up in there by making one side to the bottom plate and drilling another hole in the top.  It makes the bike stand quite a bit higher, which is a little bit of a bummer.  So I'm going to see if there's any room to move the top mount forward and down slightly to make up for that extra Inch or so that I would like to move the tail end down a bit.  That's all for now.

Critique welcome of course.   ::) :P ;)
Title: Re: 71' CB500 monoshock with no name.
Post by: MotorbikeBruno on Sep 30, 2014, 16:24:20
Forgot to update, so here we are!  Finished a few things up and she rolled over 1000 miles since I finished the main phase of her transformation.  My wife was nice enough to sew a seat for me (well it is HER bike afterall...)  I need some more foam and to shape it a little more to my liking, but here she goes. We just went on a ride recently and she did 3+ hours of riding on it :)  Thanks for everyone's input, it's been a fun ride and I'm calling it "done" for now.  Might add something to the tank, but this is pretty much it!   ;D 8)