DO THE TON

Blood Sweat Tears and Grease => Projects => Specials => Topic started by: sxecafe on Apr 29, 2012, 23:39:14

Title: CM 185T - The Learning Curve
Post by: sxecafe on Apr 29, 2012, 23:39:14
Added another project to the garage last night. A 1978 Honda CM185T.

The back story is this...Im about to get married (June 16th of this year) and I have been with my fiance for eight years. Her father is a mechanic and used to rally race and ride moto cross in Argentina, where he, and her family, is from. She is always in the garage helping me, especially during those tough moments when you are about to put a wrench through the wall because things aren't working. She rides on the back of my bikes but has always hinted that she wants her own. This May, she is finishing her bachelors degree and I wanted to reward her with something that would be a great bonding project for the two of us and something she can get dirty with and stop bugging me to do things on my bike.

Enter my purchase last night. Its a pile, but something small (a concern of hers) and slow (a requirement of mine). I picked it up for $180. Something, in CA, I am very happy with.

Here are pics from the CL add:

(http://i304.photobucket.com/albums/nn180/DIRescue/hondacmjpgSMALL.jpg)

(http://i304.photobucket.com/albums/nn180/DIRescue/hondacm1jpgSMALL.jpg)

and the inspiration:

(http://i304.photobucket.com/albums/nn180/DIRescue/Ewing__20111025_1607.jpg)

I will unveil it to her in May but I want to get the bike a thread of it's own.


Title: Re: CM 185T - The Learning Curve
Post by: Azbiker on Apr 30, 2012, 00:57:17
That is damn cool ! Looking forward to seeing how this turns out. I like these smaller bikes.
Title: Re: CM 185T - The Learning Curve
Post by: teabowl13 on Apr 30, 2012, 12:36:50
YEAH! I like it too...
Got any info on the inspiration photo?
What is that thing and who built it? I love it!
Can't wait to see what you guys do with hers!!
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Apr 30, 2012, 13:55:42
It looks cool, no? Here is the article about it:

http://www.pipeburn.com/home/2011/11/2/1978-honda-cm-185t-classified-moto.html

Thanks for the nods, guys. It was great last night she was over at my neighbors house with me and Im storing the bike in his garage. He made up a story that he bought the bike for $150 bucks and that he used to ride bikes in India, where he is from. Giuliana said "It's such a cute bike!!! I love how small it is!" Hook. Line. Sinker. hahahahah
Title: Re: CM 185T - The Learning Curve
Post by: CurtisR on Apr 30, 2012, 14:04:47
haha. Sounds like a good story.
On board to see it finished.
Title: Re: CM 185T - The Learning Curve
Post by: Maritime on May 17, 2012, 15:43:16
Hows this one coming along?  forgot to post to get updates first time I looked in.  I sooo want to get my wife to learn to ride, maybe if I built her a bike she would.
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on May 17, 2012, 15:51:31
Still sitting in my neighbors garage. It's my girls last week of school and as of right now,  she has three finals left. She'll be done on Sat and graduating on Tuesday. Im not sure which day I'm going to give it to her but I will document the reveal.
Title: Re: CM 185T - The Learning Curve
Post by: Maritime on May 17, 2012, 16:00:22
cool!
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on May 23, 2012, 04:01:04
So here is how it all went down. I mocked up a certificate for the Ride Rite motorcycle training course and inside I shopped a picture of the bike from the CL ad. Around it I told her that our neighbor didnt buy the motorcycle and it was actually hers. I slipped it in to her computer and let her find it on her own. It took her a minute to actually realize what was going on. You can tell she gets it when she gets loud.

http://youtu.be/wVzEUZlvoCE


Here is the "card":

(http://i304.photobucket.com/albums/nn180/DIRescue/cd758704.jpg)

Here is her on the hog:

(http://i304.photobucket.com/albums/nn180/DIRescue/29be8de7.jpg)

and here is the graduate:

(http://i304.photobucket.com/albums/nn180/DIRescue/f8b1f07e.jpg)

Title: Re: CM 185T - The Learning Curve
Post by: Maritime on May 23, 2012, 08:43:31
Nice!  Have fun building it and post up the progress!
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on May 23, 2012, 13:50:53
Thanks, bud. She was so stoked. Such an overwhelming day. We're very happy right now.
Title: Re: CM 185T - The Learning Curve
Post by: JustinLonghorn on May 23, 2012, 14:18:18
This is a rad thing, man. Absolutely rad.
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on May 23, 2012, 14:22:52
:) Thanks, man. I know I keep saying this but I just cant get over how happy I am for her. It's like a proud parent but... not.
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Aug 29, 2012, 19:40:37
Little thread bump on this one. Wasn't going to get too far in to this thing for a while but I saw a deal that was pretty darn good. Got this '71 CB175 tank for the bike.

(http://i304.photobucket.com/albums/nn180/DIRescue/KGrHqVHJEgEeDHVpjBQNU7HVbsg60_57.jpg)

There is a carb for pretty cheap also that I am watching. That's all.
Title: CM 185T - The Learning Curve
Post by: sxecafe on Sep 07, 2012, 18:21:11
Got the tank yesterday and the wife got so excited that we made a parts list. Hoping to not get too far in to this one. She wants to ride and I don't have the time to go ape shit with a 185cc build.

Heres the tank on the bike. Have to lower the head light to make it look right with some low-rise bars.

(http://i304.photobucket.com/albums/nn180/DIRescue/0F1824DC-BF75-4F53-94E5-BC91243D2993-3093-000005D079A236CD.jpg)


Sent using Tapatalk
Title: Re: CM 185T - The Learning Curve
Post by: shamus on Sep 12, 2012, 14:35:28
I'm signing up. Good for you, dude. Great surprise and what I don't doubt will be a very cool bike.
Title: Re: CM 185T - The Learning Curve
Post by: RotaryDanglish on Sep 12, 2012, 15:07:35
Signing up as well, wanted to do something similar for my girl but then so went and found a CB1 to steal. You inspiration looks great!  :)
Title: CM 185T - The Learning Curve
Post by: SpeedBump on Sep 12, 2012, 17:13:30
Cool dude
Title: Re: CM 185T - The Learning Curve
Post by: MoToBoX-VintageSpeed on Sep 12, 2012, 18:06:57
lovely....
Title: CM 185T - The Learning Curve
Post by: sxecafe on Sep 18, 2012, 13:53:14
Thanks, guys. We're stoked on it.


Sent using Tapatalk
Title: CM 185T - The Learning Curve
Post by: sxecafe on Sep 30, 2012, 13:57:43
Took a trip to a guy I get parts from sometimes and ended up snagging a set up bars for the Curve... Swapped it out and cleaned up a little of the trash in the front.

Wife got home and super stoked started wrenching on the rear end and took the "Oh Shit" bars off.

Also, ordered up the new wire connectors last night for this and the 750 I have in the stall. Still no sign of life from the 550 but we're steady plugging away at it.


Here is what the triple mount looked like. I had to clean all that shit off.

(http://i304.photobucket.com/albums/nn180/DIRescue/293BD21B-50E2-419D-9B32-81D5A5A03EC7-1447-000000BBA78369FE.jpg)

(http://i304.photobucket.com/albums/nn180/DIRescue/25A59BB7-81B4-4080-B4A5-2DC18F1BAEAF-1447-000000BB9377B0E5.jpg)

Test fitting with the tank. Still have to drop the head light on it.

(http://i304.photobucket.com/albums/nn180/DIRescue/349E56CC-0495-4722-91D7-90E546B919F1-1447-000000BB8B432E03.jpg)

With the rear parts removed and a happy camper testing it out:

(http://i304.photobucket.com/albums/nn180/DIRescue/1AE86A02-7B38-4A0F-A0E1-8655DDACED0B-1447-000000BB813AA890.jpg)


Sent from my iPad using Tapatalk HD
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Oct 02, 2012, 14:02:35
Got a battery for this thing last night and put out a feel for a carburetor. Also have the electrical connections on their way from down south. I actually might be able to fire this thing in a few weeks!!! Would be very excited if that were the case.
Title: Re: CM 185T - The Learning Curve
Post by: Maritime on Oct 02, 2012, 14:18:34
Nice work so far.  Moving along well.
Title: CM 185T - The Learning Curve
Post by: sxecafe on Oct 04, 2012, 13:45:28
It the connectors last night I love this place Vintage Connections. If you haven't tried it out, you really should get on it.

(http://i304.photobucket.com/albums/nn180/DIRescue/1C36310D-5EB8-4CAC-B58A-580E65890A77-5679-00000284289285BB.jpg)

Also bought a carb and a right side control yesterday. Looking at a petcock right now. Trying to get all the stuff I need to fire it up before the tear down.
Title: Re: CM 185T - The Learning Curve
Post by: Maritime on Oct 04, 2012, 13:59:13
Good plan. Once you know it will run, then make it pretty.  Have you checked compression? This thing probably has a CDI, so there is no ignition timing to set and cam timing should be fine if no one has messed with the internals. So it should fire as long as you have compression and spark.  You can test fire with just fuel in a bottle and some fuel line if the petcock is hard to score.  I think this is the Nighthawk 250 motors first iteration so you may be able to source parts from them.
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Oct 04, 2012, 14:10:47
Surprisingly, parts aren't too difficult to find for this thing. They made a CM200 and 250 (which, as you said would become the Nighthawks) and most of those parts are interchangeable. That being said, I put a '72 CB175 tank on it so that's the petcock I'm trying to score. Just cant decide on whether or not I want to test out one of the Chinese made ones for $20 (I know you get what you pay for) or get a busted one and a rebuild kit for $60.

It does have decent compression, or at least it sounds like it (haven't tested it yet). I dont think anyone has opened this thing up EVER! I mean... unless you're an idiot like me, who would want one of these bikes, let a lone want to wrench on it! Also, I don't think it's CDI... there is a coil, albeit small. Now that I think of it though... I haven't located point on it.
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Oct 04, 2012, 14:17:53
This is what I'm looking in to:

http://www.ebay.com/itm/HONDA-CB100-CL100-SL100-CB125-S90-S90Z-XL100-Fuel-Cock-/170613909496?pt=Motorcycles_Parts_Accessories&fits=Year%3A1971|Model%3ACB&hash=item27b961a7f8&vxp=mtr
Title: Re: CM 185T - The Learning Curve
Post by: Maritime on Oct 04, 2012, 14:21:13
What year again?  79+ have CDI's, little black box located on the frame connected to the coils. The signal comes from the stator and little brass plates.  As the stator turns and the plates pass a pickup it goes to the cdi which in turn fires the coils.  Aftermarket cdi's are cheap and supposed to be better than factory I had a couple but have given them all away to DTT members.  With the new connectors though ou should have no issues if the cdi is good.  Just make sure it is grounded properly and the ground spots are clean.
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Oct 04, 2012, 14:22:48
It's a '78. I'll take a look in to it.
Title: Re: CM 185T - The Learning Curve
Post by: Maritime on Oct 04, 2012, 14:23:18
I'm wrong the 79 still has points under the stator cover.
Title: Re: CM 185T - The Learning Curve
Post by: Maritime on Oct 04, 2012, 14:23:56
Ha yep, 78 has points under the stator cover according to fiche.
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Oct 04, 2012, 14:24:42
Stupid points. hahaha
Title: Re: CM 185T - The Learning Curve
Post by: Maritime on Oct 04, 2012, 14:26:58
Ahh there not that bad, at least they wear out slowly and don't just stop working one day like a CDI can, you can fix em enough to get you home.
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Oct 04, 2012, 14:28:26
I know. I'm sure they'll be fine. I think this thing only has ~15K miles on the clock so cant imagine there is that much wrong with it (famous last words, huh?).
Title: Re: CM 185T - The Learning Curve
Post by: Maritime on Oct 04, 2012, 14:39:19
Ha yep, 15k well cared for miles or 15k and never had an oil change?  At least it is small and simple.  Should be good. I want to get my wife interested in her own bike but she is just happy to ride on the back for now.
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Oct 05, 2012, 13:14:40
Another addition:

(http://i304.photobucket.com/albums/nn180/DIRescue/383CE78F-BC27-48CE-8DE5-AE7133DB0323-6445-000002E4703DB72E.jpg)

Cheap-o carb. Gonna test it out. $30 as opposed to the $80 something for an original with a rebuild. I might get lucky, who knows. Waiting on the right hand control and then a petcock but, I'm gonna try to find a Weed Whacker tank or something to use as a starter tank. Maybe this weekend....
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Oct 08, 2012, 13:13:43
Got in the right hand side control and it was beat to hell! One of the mounting holes was busted up and couldnt hold a screw. The killswitch was broken too! Luckily, I had some other switch parts lying around and was able to fraken-switch one together. Should get the pet cock in today and then need a keep to try to start it.

I'll have pics later.
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Oct 11, 2012, 12:57:50
Petcocky

(http://i304.photobucket.com/albums/nn180/DIRescue/E30D1554-F9DF-4FAC-8486-4AF375CC8953-11659-0000059DFF3DFEE6.jpg)

(http://i304.photobucket.com/albums/nn180/DIRescue/CD69D0BB-8121-4D1B-B408-07F53ABA7817-11659-0000058B79E20294.jpg)

Also, got our manual. Waiting on the ign switch and then, really, there is no reason why this bike cant be started... I mean... really.

(http://i304.photobucket.com/albums/nn180/DIRescue/0C6B1019-F5B0-4B15-AE50-AD51A3BFEB08-11659-0000058BB06243BF.jpg)
Title: CM 185T - The Learning Curve
Post by: sxecafe on Oct 13, 2012, 23:45:37
Last piece to start it up.

(http://i304.photobucket.com/albums/nn180/DIRescue/B42EA6CB-5153-4BA8-BBF1-1D8DF6C664AF-14113-0000071CB1F4A612.jpg)
Title: CM 185T - The Learning Curve
Post by: sxecafe on Oct 16, 2012, 14:31:57
Last night while I was bust tinkering with the 550, wifey wanted to get working on her ride. She asked me what needed to happen and I told her that the first thing was switching out the crummy old electrical clips. She got down with changing all the old ones to what we bought a few weeks back. Did a pretty good job too! She was complaint that her fingers were hurting, tho. ;)

(http://i304.photobucket.com/albums/nn180/DIRescue/9F918C4B-80F5-428C-ACC3-B05D15C3C56D-1196-0000007C21418715.jpg)

(http://i304.photobucket.com/albums/nn180/DIRescue/5333A6BE-3C40-4F60-AE49-6CEB47ECAA59-1196-0000007C2ACEC36A.jpg)

(http://i304.photobucket.com/albums/nn180/DIRescue/2A6FE3AB-F4E5-40A6-B62C-7A7D34A09529-1196-0000007C27A3EE1E.jpg)
Title: Re: CM 185T - The Learning Curve
Post by: tomgbda on Nov 17, 2012, 15:54:00
Subscribed! Always interested to see these smaller builds!
Title: CM 185T - The Learning Curve
Post by: sxecafe on Jan 22, 2013, 18:22:12
It's been a while on this little guy. Now that the 550 has been running (aside from a recent discovery), we are going to put a little bit of time in to this thing.

Got a new harness as I didn't want to continue to trace the mess of wires currently on the bike down. Going to try and start it soon and see if it'll kick over at all.

(http://i304.photobucket.com/albums/nn180/DIRescue/C28C574D-347E-4070-972A-AEF2E46AC92B-5432-000002B7D672417D.jpg)

This one ties in nicely so far. Hoping not to have to fuss with it too much.
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Jan 27, 2013, 15:16:12
I only had a few hours to spare yesterday so instead of tearing in to the problem with my CB550, I decided to plug up the loom on this little guy. I switch out the old plugs with the new ones I had purchased and that wifey had already put on the old loom. Took about 30 minutes to get all new connectors on there. Then I started to plug everything in. For the most part, everything went off with out a hitch. The only major question I have is about a blue and white wire that the diagram says connects to the starter button.

Here is the diagram and the code is "L/W"

(http://i304.photobucket.com/albums/nn180/DIRescue/20E3BBF3-1C3A-4524-B6D6-42D269FFF0FC-10201-000005422865050A.jpg)

I have a Black and Red/Yellow attached to a two pole starter button. The L/W is said to tie in to the high beam switch on the left side control switch. Any guess as to what this is?

After all that, we tried to fire it up. Sure enough, it cranked!!! No fire though. I traced it down and it seems like the coil is shot. I'm going to test it again today and then see what my options for a new spark set up would be.

Here's the attempt:

http://www.youtube.com/watch?v=Be7SG3eqBDk
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Jan 27, 2013, 16:15:47
Maybe this?

http://www.mikesxs.net/product/17-6822.html
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Feb 05, 2013, 13:24:52
Anyone have experience with these 6V systems? I was working with a multimeter this weekend briefly and couldnt get power to the coil wires (b/w and blue) I could get power to black, y/r and the red wires but not to the coils.

Trying to test the coil and don't know if I'm missing something here...
Title: Re: CM 185T - The Learning Curve
Post by: paddlesat16 on Feb 06, 2013, 12:19:24
Hi

With a 6v system, you need to make sure all electrical connections are clean including all earths sanded over to make sure that you don't lose any amps with resistance. Because you have so little to work with in the first place. Converting to 12v would make this bike more reliable.

Regards
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Feb 06, 2013, 13:28:24
I've been considering that. I am getting the thing to crank over though, so I know there is power in there somewhere.

I have to read up on converting to a 12V system. I have a CB100 that would probable need the same treatment.
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Apr 14, 2013, 18:17:56
Purchased a new coil that came in yesterday. I put it on the bike and tried to get spark with a limited amount of work time. I was unsuccessful but I need to play with it more.

The engine is not cranking over like it was before, though. I have to check the wiring again but I seem to be getting power to all the right places. When I push the starter button, I get 6 volts at both black and y/r. Could the starter itself be bad? How would you test it with only one wire coming out of it...?
Title: CM 185T - The Learning Curve
Post by: sxecafe on Apr 15, 2013, 04:11:51
Spent a few minutes testing today. Heres where im at:

- Testing the wires coming out of the ign switch, red is hot and blk is hot with the switch on. That is working properly.

- On the starter solenoid, with positive on the multimeter on the positive of the battery, I have 5.7v coming from the starter wire side of the solenoid as well as 5.7v at where the wire meets the starter. I get no voltage drop when I push the starter button and the black lead is touching the positive terminal on the solenoid (this is what I think the problem is)

- With the ign switch on, y/r wire gets 5.7v when the start switch is pushed in.

- The resistance between the two wires on the solenoid is ~1.1/1.2.

- Lastly, with a lead attached to the positive side of the solenoid, when I touch the other side of that lead to the starter wire, I get a minimal spark but the starter motor doesn't jump.

I think either the solenoid is bad (but can't find readings I need to verify this) or the starter motor needs to be rebuilt. Other than that, the only thing i can think of is the neutral switch. Any thoughts would be appreciated.

Sent from my iPad using Tapatalk HD
Title: Re: CM 185T - The Learning Curve
Post by: shamus on Apr 15, 2013, 08:43:19
Take a jumper cable from the pos battery terminal to the starter motor, bypassing the solenoid. If it turns over, then it's likely the solenoid.
Title: Re: CM 185T - The Learning Curve
Post by: Maritime on Apr 15, 2013, 08:50:26
Take a jumper cable from the pos battery terminal to the starter motor, bypassing the solenoid. If it turns over, then it's likely the solenoid.

+ 1 you can do this with a set of booster cables to check it out.
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Apr 15, 2013, 13:17:00
Hooked up the positive lead from the battery to the starter and got it to jump twice then it stopped... I thought it might have been a dead battery (even though it read 5.7v last night) so I tapped it to the battery on my CB550 and got nothing. The battery from the 550 is good b/c it started that bike immediately afterwards.

I can def say that the starter is bum, ya? Can the solenoid still be an issue?
Title: Re: CM 185T - The Learning Curve
Post by: Maritime on Apr 15, 2013, 13:23:43
Mmmm A 6 v battery not under load should read >6V should it not?  5.7v seems weak.  Do you have a 6v charger?  Hook that to the battery then do the test again with it on the battery to to boost it some and see before you are sure it's the starter.  I don't know also if a 6v starter will turn with 12V?  Someone else may be able to answer that.
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Apr 15, 2013, 14:22:46
From what I'm reading, you can jump a 6 w/ a 12v. I think the starter is kaput.
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Apr 26, 2013, 14:04:53
I got a starter on the way. Hopefully it's here today or tomorrow and I can see if the thing will start. Really, as long as it puts a bit, I'm good with that to move on to working on the body.
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Apr 30, 2013, 14:19:49
Got some time in last night after the starter came in. The bike still didn't kick over but I kinda didnt expect it to. I think the start solenoid is eff'd. I got power but didnt get anything to kick over... maybe the battery is dead, like you said, Mari. I got a 6v tender that I will hook up to it. At this point, I'm thinking of getting it off the stand and trying to kick it over and seeing if it will start that way...

It felt good to get dirty like this again. I pulled the exhaust off in order to remove the starter... MAN those things are HUGE!!!!
Title: Re: CM 185T - The Learning Curve
Post by: Maritime on Apr 30, 2013, 14:26:05
I know the corssover on the 400 was like 25 lbs of cast crap. I replaced it with 2 foot sections of exhaust pipe, made a huge difference in weight.  Try the new starter with a battery straight to the terminal or use a screw driver to short the solinoid and see if it turns after you have charged the battery.  If is still won't turn over you may have an internal issue.  does the motor turn by the kick start or in gear with the wheel?
Title: Re: CM 185T - The Learning Curve
Post by: sxecafe on Apr 30, 2013, 14:47:49
Yea, it kicks with the kick starter.
Title: CM 185T - The Learning Curve
Post by: sxecafe on Jul 27, 2013, 21:43:57
Worked on this beast for a while today. As it stands, I have it turning over with the starter motor and I am getting power to each side of the coils but I'm not getting spark coming from the coil. I have power to the points but the gap is not sparking either. I'm at a loss as to where to look for this issue. Anyone have and insight?


Sent from my iPad using Tapatalk HD
Title: Re: CM 185T - The Learning Curve
Post by: Getho on Nov 11, 2013, 07:29:22
Anything happen with this bike?

Small bikes can be pretty rad!
Title: CM 185T - The Learning Curve
Post by: sxecafe on Nov 11, 2013, 11:19:39
Still trying to get it to turn over but my time has been really limited lately. Every time I get an hour I have to retrace my steps of getting it started and it's ot very efficient.


Sent from my iPad using Tapatalk HD
Title: Re: CM 185T - The Learning Curve
Post by: Getho on Nov 12, 2013, 18:51:18
I know what that's like, my bike is stored a 40 minute drive away. - So every time I get the chance to go work on it, I spend the first 30 minutes trying to remember where I was up to and what I need to do.

Good luck with it though, I'm sure it'll fire up soon.