Author Topic: rear spacers? different axle? help me out. (pics added) (Read 4425 times)

Industrial Cafe · « **Reply #25 on:** March 29, 2009, 06:58:44 PM »

Yeah, just grind down that spacer so it fits in there without stretching the swing arm open.
Try looking at the assembly installed without the spacer in it and the chain still shouldn't be out of line.
If it is then the k8 sprocket carrier might not have been necessary.
In the case that the carrier is unnecessary, swap it out and check again...
Isn't custom work fun?

J.Webster Designs · « **Reply #26 on:** March 29, 2009, 07:06:07 PM »

well, the spacer sprocket side spacer sill not make a difference in the alignment of the chain.... the wheel assembly, sprocket carrier, brake side spacer, and caliper attachment are all proper and aligning fine. its just a matter of either the sprocket side spacer or the axle and with the way that i had to install everything and the clearance on that bolt im thinking that its most definitely the sprocket side spacer. everyone concur?

Industrial Cafe · « **Reply #27 on:** March 29, 2009, 07:13:59 PM »

after shaving it down, you'll see, It should all line up fine.
here's some pics of what I did.
(dirty)

I concur, anybody else?

Industrial Cafe · « **Reply #28 on:** March 29, 2009, 07:18:07 PM »

when you shave it down, the swingarm will come in and the wheel assembly will stay in the same place.

754 · « **Reply #29 on:** March 29, 2009, 08:08:53 PM »

For %*()(*& sake..

Congratulations, you finally came to the conclusion that what I told you was wrong yesterday was wrong today..hmmmm

I will will simplify so all can follow

77/78 sprocket carrier is WIDER

Earlier is NARROWER

When you put WIDER in a NARROWER place, it goes in hard.

When you take part off WIDER, then it fits...

Think

I am getting too old for this....

Industrial Cafe · « **Reply #30 on:** March 29, 2009, 08:12:12 PM »

HAHAHAHAHA!!!

754 · « **Reply #31 on:** March 29, 2009, 08:22:57 PM »

I am trying to be nice, but to be fair, I had to figure that out before the OP was born...

& indcaf was about 1 or 2 yrs old..

Industrial Cafe · « **Reply #32 on:** March 29, 2009, 08:45:07 PM »

I just wanted him to know what had to be done in 1000 words or more... and you know how much I like pictures!!!

754 · « **Reply #33 on:** March 29, 2009, 08:52:17 PM »

Heyyyy, did you get 21s front & rear and ride it yet?

J.Webster Designs · « **Reply #34 on:** March 29, 2009, 09:03:08 PM »

I realize that...... but what you are forgetting is that my bike didn't come with this spoke rim on it... it came with a comstar... I don't know how this wheel was originally fit in the swing arm. I realize that the 7 8hub is wider.... after all that IS why i bought it and ditched the 76..... im glad that you think that you solved all my problems... all you said is that when you put something bigger in something smaller it doesn't fit. you never answered any of my questions (i.e. what the spacer sizes for 76 and 78 and if there are different axle lengths.) and just so you know... in case you have never put this setup into a 76 swing arm before... everything actually fits. it might fit snug. but it actually fits. and since this is my first CB build i had a question about what the spacer sizes were. if you had come on here and said the 78 spacer is 31mm and the 76 is 38mm then that would have solved all my problems.

sometimes people need to bounce ideas off of other people to confirm what they are thinking... in this case... that is exactly what i needed. so thanks for being a internet know it all dick

bryanj · « **Reply #35 on:** March 29, 2009, 09:15:27 PM »

I disagree, if you had to open the swing arm out IT DOES NOT FIT.

What has been said several times is that the wheel with all the spacers, adjuster and everthing else on it should slide into the arm EASY with maybe a small gap UNTIL that is done you CANNOT decide if the spindle is wrong.

Shaving a apacer so that you can deform the arm in till the cotter fits is even worse than forcing the arm open till the wheel with wrong spacers fits.

To the best of my knowledge the specs you asked for are not provided by Honda anywhere as they dont expect people to mix-n-match

754 · « **Reply #36 on:** March 29, 2009, 09:21:12 PM »

& here I thot an internet dick was;
Someone who posts a question, says they will add pics if necessary, then bumps it 3 hrs later w/o posting pics.

Then by post 10, someone tells you exactly what is wrong, you choose to ignore that, then later you call that poster a dick..

hmmmm...

J.Webster Designs · « **Reply #37 on:** March 29, 2009, 09:21:20 PM »

thats the information that i needed... I was trying to figure out if the previous owner put the com star in that swing arm with the wrong axle and just cynched it down. doing so could have dis formed the swing arm that 1/16 that i needed. I will be taking my spacer down to the machine shop and turning it down to the desired length. thanks guys.

J.Webster Designs · « **Reply #38 on:** March 29, 2009, 09:22:33 PM »

Quote from: 754 on March 29, 2009, 09:21:12 PM

& here I thot an internet dick was;
Someone who posts a question, says they will add pics if necessary, then bumps it 3 hrs later w/o posting pics.

Then by post 10, someone tells you exactly what is wrong, you choose to ignore that, then later you call that poster a dick..

hmmmm...

your right... have a good night.

Industrial Cafe · « **Reply #39 on:** March 30, 2009, 05:59:40 AM »

bryanj- i didn't say shave it down till it deforms the arm inward.
I said:

Quote from: Industrial Cafe on March 29, 2009, 07:18:07 PM

when you shave it down, the swingarm will come in and the wheel assembly will stay in the same place.

"come in" meaning, not stretched out or under tension in any direction.

754-
yeah man, I'm still pretty excited about it! I have the front hub and spokes, and the swing arm and chain. next week I'm getting the rear hub.
Still need hoops, rear spokes, tubes and tires. And I gotta get the swing arm stretched by a friend with a TIG and more talent than me.
I don't trust myself on that (I'm rusty)

I'm also doing a set of 21's for a friend with a cb750 bobber. red hubs, red rims, stainless spokes and a custom drop seat hardtail. I'll post about that project when I start it too.

J.Webster Designs · « **Reply #40 on:** March 30, 2009, 06:34:40 AM »

are you going with custom rims from someone like buchanans?

Toxic · « **Reply #41 on:** March 30, 2009, 06:41:19 AM »

This posting is rather timely for myself. I was just about to refurbish my 77 sprocket carrier hub assembly and mate that to a 72 frame.

So thanks to all that posted. I didn't know the 77 carrier was wider.

As frustrating as it may be for some of the more experienced to post, I for one am very thankful.

This one thread has no doubt saved me a lot of frustration when I try to reassemble.

Gary

Industrial Cafe · « **Reply #42 on:** March 30, 2009, 06:46:21 AM »

midnight-
I'm getting the spokes from buchanan and the rims from jireh cycles. the front spokes are the stock Harley size from an 00-06 FXLSTLXSFTLFSTXTFSSFTLXFST or whatever that garbage is.
I got some shiny fronts with nipples for $16 shipped.

I'm using a 21x3.25 with 120/70/21, and a 21x2.15 with a 90/90/21 on the front.
the hoops are 100 bucks for the pair, shipped.

754 · « **Reply #43 on:** March 30, 2009, 06:50:31 AM »

Toxic, I hope you are running either a 77/78 motor, or running an offset front sprocket.

Its a good way to get extra tire clearance.

J.Webster Designs · « **Reply #44 on:** March 30, 2009, 06:53:58 AM »

754 is right. the clearance that i have with the 78 set up is pretty big. if you look at some of my pictures... i think that a wider tire will actually hit the brake stay bar before it hits the chain.

bryanj · « **Reply #45 on:** March 30, 2009, 07:57:11 AM »

As a final comment from the normal workshop, on a standard 500/550/750 you should be able to pick up the rear wheel complete with fitted spindle and with all the spacers,adjusters etc assembled on it and the nut loose on the spindle and slid it into the open ends of the swing arm easily leaving around a 1mm gap side to side then fit the end casps and swing the adjusters round and tighten the spindle

Toxic · « **Reply #46 on:** March 30, 2009, 08:20:06 AM »

Quote from: 754 on March 30, 2009, 06:50:31 AM

Toxic, I hope you are running either a 77/78 motor, or running an offset front sprocket.

Its a good way to get extra tire clearance.

The 77 bike is a donor bike for spare parts.
My finished bike will have a 76 motor in a 72 frame. So that should work right?

The rear hub from the 77 was in better shape that's why I'm using it.

I did notice the 77 swing arm is about a 1/2 wider than the 72.

If I where doing this project again I don't think I would have picked up the 77 as there are more differences between it and the 72-76 that I want to end up with.

Thanks for all your help.

KRONUS0100 · « **Reply #47 on:** March 30, 2009, 09:37:35 AM »

OK....PLEASE NOBODY YELL...I am not trying to stir trouble....but I bought a set of 78F comstars for my 76F 750. The rear came with the spacers and axle so it all went in my 76F swing arm. The chain lined up and everything. Still lines up with the new 72k motor. if they are supposed to be wider hubbed.....is it possible my comstars are not off a 78? They did come off a wrecked 78F, but that don't mean they were correct for the bike....right?

J.Webster Designs · « **Reply #48 on:** March 30, 2009, 09:58:31 AM »

i cant really answer that one. when my bike had the comstar in it everything lined up well accept the brake side. it was dangerous with the 76 caliper with the com star setup. brake side didn't line up well. but then again... i have a 78 motor in mine. i'm not sure how your chain is lining up properly if you have a 72k motor and a 78 comstar. in my mind it should be about a little over a 1/4 inch off or around 10mm off. I will let others chime in with better info though.

Toxic · « **Reply #49 on:** March 30, 2009, 01:41:55 PM »

Well I know you guys like pics.
The way it is supposed to be:

Yes the 77 sprocket carrier is quite a bit taller.

Of course I had new bearings installed in the 77. So since I have the option I think I will swap the bearings into the 72 carrier then everything lines up. Saves me the hassle of making spacers etc.

And yes the axle spacers in the pic are from a 77 and they don't fit on a 72 frame either.

I wish I had come across this info a couple of weeks ago. It would have saved me some time and money. Oh well it's all part of the fun.

thanks to all that contributed to this thread, I learned alot.

Gary

News:

Author Topic: rear spacers? different axle? help me out. (pics added) (Read 4425 times)