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Author Topic: CB360's-from build to blog - 2013, MDS (Mo Dumb Shit)  (Read 350796 times)

Offline Rocan

  • Posts: 4874
  • "Long after I rest, my steel will live on"
Re: 665----667---------Neighbour's of the Beast
« Reply #140 on: May 25, 2010, 23:08:01 »
bout time you got off your ass and did something  ;)

looking good pj... how did you mount the degree wheel to the crank? i have one but havent thought of a way to mount it yet.
PJ- Cafe's don't really work right until you get rolling 70mph +

Honda CB350 Project- www.dotheton.com/forum/index.php?topic=8643.0

Honda C100 Restoration- www.dotheton.com/forum/index.php?topic=38653.0

Offline Swagger

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Re: 665----667---------Neighbour's of the Beast
« Reply #141 on: May 26, 2010, 12:38:47 »
What are your thoughts on overlap?
.....there's no way that little rice cooker is going 100m/h when the work need to get up to those speeds includes a big fuck off fairing shaped like a giant cock. ~Staffy

Weiner tetanus is nothing to scoff at. ~JustinLonghorn

Offline Rocan

  • Posts: 4874
  • "Long after I rest, my steel will live on"
Re: 665----667---------Neighbour's of the Beast
« Reply #142 on: May 26, 2010, 16:54:21 »
You probably have a 3/4" hole in degree wheel, need to find some washers that will support outside (fender washers, ~5/16"hole, ~inch and quarter OD) and a washer that fits into center with a 8mm hole to keep it centered on crank.
 Use a shorter bolt to clamp it all together
 I got a piece of angle and drilled some holes to mount onto rocker cover bolts (with spacers to keep it level)
 Have you got dial indicator with magnetic base yet?.
 You need extension for indicator to reach down to spring retainer (although, working in a cycle shop you can probably find a spoke the correct thread and make extension, use shortened spoke nipple as locknut)
 I'll get pic of top end set up tomorrow. (and pic of bottom yoke)


i have the motion pro degree wheel... the hole on it is TINY.

as for the dial indicator, dont have one... any tips on where i can find a good one?
PJ- Cafe's don't really work right until you get rolling 70mph +

Honda CB350 Project- www.dotheton.com/forum/index.php?topic=8643.0

Honda C100 Restoration- www.dotheton.com/forum/index.php?topic=38653.0

Offline crazypj

  • Posts: 13446
  • Split personality, I fake being smart
Re: 665----667---------Neighbour's of the Beast
« Reply #143 on: May 27, 2010, 15:56:28 »
i have the motion pro degree wheel... the hole on it is TINY.

as for the dial indicator, dont have one... any tips on where i can find a good one?

 You only need a 8mm hole for bolt, still need some washers to support things though, file or drill it to fit if it's 6mm
 I got some 1" travel DTI with magnetic bases from Harbor Freight tools, they are only about $20.00 'set' when on offer. (and about $26.00~$33.00 other times)
You only really need one, just swap between intake/exhaust for readings. ( I have 7 or 8 now, some good Mitutoyo and some special ones for twostroke timing plus some others for setting milling machine)


Swagger,
 Overlap is a good thing, allows exhaust pulse to draw extra mixture in at 'tuned' rpm.
More overlap and narrow lobe centers push powerband up rpm range though.
 If you've been searching you'll findit's difficult to find decent information online
 Modern bikes can run at up to 130% V.E. because of almost vertical intake port angles  (even without 'ram air')
 Old stuff  can get around 80%  at high rpm (which is a pretty good number with 90 degree bend in intake)
 Its less than 100 % at low rpm because of some flow reversion, gets around 100% at 4,500~ rpm even with flow reversion (which is partly accounts for super rich mid range when pods get fitted, messes up tuned lengths)
« Last Edit: Oct 11, 2010, 02:21:51 by crazypj »
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline Swagger

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Re: 665----667---------Neighbour's of the Beast
« Reply #144 on: May 27, 2010, 16:22:57 »
I've been looking at grinds for the 500T and some are getting close to 50* at "stock" settings and this seems pretty excessive to me. At some point it's gonna cross a line between acceptable losses and outright wastefulness.

Fucking cams! Every time I feel like I'm fairly well educated I find something else I need to know. As it stands I'm probably going to have to convert to coil springs and maybe one-off rockers. This crap gets outta hand so quick!
.....there's no way that little rice cooker is going 100m/h when the work need to get up to those speeds includes a big fuck off fairing shaped like a giant cock. ~Staffy

Weiner tetanus is nothing to scoff at. ~JustinLonghorn

Offline crazypj

  • Posts: 13446
  • Split personality, I fake being smart
Re: 665----667---------Neighbour's of the Beast
« Reply #145 on: May 27, 2010, 20:54:07 »
Here's pic of DTI (dial test indicator) and angle plate.
 You have to use an extension on DTI so your measuring off spring retainer.
 I have very light springs fitted to one side only, no valves in right side (easier to turn and more accurate to measure)

 I also stripped front end off one of the other 360's to get bottom yoke out for steering stem (not going to cut up the one I modified earlier in posts)
 I may build engine out of it as its only done about 800 miles plus, still has kickstart shaft.
Bumpstarting is looking a bad idea for streetbike?  ::)
 Still going to build it though, track/race bike will need engine.
I should have 3 done eventually.
 Thumb joint is hurting a lot, much more than expected after 3 days
 I can barely wash my hands it's so bad  :(   :'(
PJ
« Last Edit: May 27, 2010, 21:00:25 by crazypj »
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline Rocan

  • Posts: 4874
  • "Long after I rest, my steel will live on"
Re: 665----667---------Neighbour's of the Beast
« Reply #146 on: May 27, 2010, 22:58:39 »
ok so let me get this right...

the degree wheel attached to the crank along with the dial test indicator on the valve spring retainer tells you at what degree the cam is opening up the valves right?

cool setup... that sucks on the thumb man...
PJ- Cafe's don't really work right until you get rolling 70mph +

Honda CB350 Project- www.dotheton.com/forum/index.php?topic=8643.0

Honda C100 Restoration- www.dotheton.com/forum/index.php?topic=38653.0

Offline crazypj

  • Posts: 13446
  • Split personality, I fake being smart
Re: 665----667---------Neighbour's of the Beast
« Reply #147 on: May 28, 2010, 18:46:12 »
There are plenty of instructions online about degreeing cams.
 You'll have to swap between 2 pages for the pics.
 First find TDC with a positive stop, easy with head off, just bolt a bar across cylinder.
Set degree wheel pointer to zero at TDC.
 Cam timing is measured with zero lash but 0.040" lift (by turning cankshaft/cam, when DTI hits 40 thou, that's when flow is said to 'start')
Rockers slide sideways but don't move up and down to get zero valve clearance

PJ
« Last Edit: Oct 11, 2010, 02:23:00 by crazypj »
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline crazypj

  • Posts: 13446
  • Split personality, I fake being smart
Re: 665----667---------Neighbour's of the Beast
« Reply #148 on: May 29, 2010, 13:33:48 »
Woke too early this morning, bored with motor work so decided to finish the Suzuki yoke conversion.
 Ground  the seams and edges down, removed stem from CB360 bottom yoke, cleaned everything up and welded  back together.
This is what I started with


This is just welded in, before I cleaned it up


this is what it looks like from the 'top' after I ground all the nastiness off (and radiused around where pinch bolts fit)
Lock stops modified for Honda frame
.
 It's going to increase trail because it has less offset than stock 360 but I have further plans to get steering back to where it should be.
 Was planning riding out to Dime City Cycles (being getting bike ready during week, hasn't been anywhere for months)
Weather isn't looking good, lightning alarms just gone off, rain about to start anytime. (115 miles each way has lost it's appeal  ;))

PJ

« Last Edit: May 29, 2010, 13:39:37 by crazypj »
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline CrescentSon

  • Posts: 2423
Re: 665----667---------Neighbour's of the Beast
« Reply #149 on: May 30, 2010, 22:03:55 »
I got to critique some stuff (to everyone living vicariously through these posts,  it's what I do, live with it)
Did a bit of how/why
 Left some idea's kicking around

Only great good can come from this.  ;D
"I hated hipsters before it was cool." -Sonreier

"Lifes a bitch when your trying to sell gold bars to beggars" -VonYinzer

"To say that ALL cafe racers are the same degree of ho hum is like saying that finger banging a fisher price piano is on par with listening to Beethoven." -Kanticoy