Printable Version | Subscribe | Add to Favourites
New Topic New Poll New Reply
Author: Subject: Aligning input/output sprocket adapters
nick9one1

posted on 4/8/25 at 06:59 PM Reply With Quote
Aligning input/output sprocket adapters

I need to precisely align these. The diff is mounted directly to the engine so the is no driveshaft or UJ.
When I finger tighten the bolts there is about 1/2mm of play. I can get it nicely aligned on the bench with a dial indicator, but it's not going to be easy when on the car.

I was thinking about drilling some 8mm holes and fitting some locating pegs. Glis this a good/bad idea? Other suggestions?




[Edited on 4/8/25 by nick9one1]

View User's Profile E-Mail User View All Posts By User U2U Member
adithorp

posted on 5/8/25 at 06:49 AM Reply With Quote
Clocking the flanges on the outside diameter does rely on the outer being concentric with the center line, so you need to check that. I'd guess once you've clocked the flanges, drilling and fitting alignment dowels should ensure the fit.

The other issue you then have is perfect alignment of engine and diff. Even the slightest misalignment will put load on yhe input/output shaft bearings and cause premature failure.

I'd think using a rubber doughnut type coupling would be a better solution.





"A witty saying proves nothing" Voltaire

http://jpsc.org.uk/forum/

View User's Profile View All Posts By User U2U Member
nick9one1

posted on 5/8/25 at 09:02 AM Reply With Quote
quote:
Originally posted by adithorp
Clocking the flanges on the outside diameter does rely on the outer being concentric with the center line, so you need to check that. I'd guess once you've clocked the flanges, drilling and fitting alignment dowels should ensure the fit.

The other issue you then have is perfect alignment of engine and diff. Even the slightest misalignment will put load on yhe input/output shaft bearings and cause premature failure.

I'd think using a rubber doughnut type coupling would be a better solution.



thank you. A guibo did cross my mind, but I really dont have a lot of space to play with.
I'll give the alignment dowls a go first. When I inevitably get a failed bearing I'll change the design


View User's Profile E-Mail User View All Posts By User U2U Member
kj

posted on 5/8/25 at 08:21 PM Reply With Quote
Anyone got a sprocket adaptor for a kawasaki zx1200 or zx1400





Think about it, think about it again and then do it.

View User's Profile View All Posts By User U2U Member
Dingz

posted on 5/8/25 at 10:38 PM Reply With Quote
Can you set them up in a lathe and machine a short spigot on one half and a recess for it to fit into in the other?





Phoned the local ramblers club today, but the bloke who answered just
went on and on.

View User's Profile View All Posts By User U2U Member
coyoteboy

posted on 6/8/25 at 08:34 AM Reply With Quote
I'd be making the engine and diff a single assembly that bolts out/in, nothing else is going to be reliable there.
View User's Profile E-Mail User View All Posts By User U2U Member
nick9one1

posted on 6/8/25 at 08:45 AM Reply With Quote
quote:
Originally posted by coyoteboy
I'd be making the engine and diff a single assembly that bolts out/in, nothing else is going to be reliable there.


You probably cant tell from the first picture I posted, but I've done this. I built a subframe that both rigidly mount to. The subframe then sits on rubber engine mounts.

(upside down)


[Edited on 6/8/25 by nick9one1]

[Edited on 6/8/25 by nick9one1]

View User's Profile E-Mail User View All Posts By User U2U Member
nick205

posted on 6/8/25 at 03:52 PM Reply With Quote
What is the rear axle, diff and drive shafts from?

Are they all from the same donor car?

View User's Profile View All Posts By User U2U Member
jacko

posted on 6/8/25 at 05:05 PM Reply With Quote
Looks like there is part of a VW beetle with toque. Suspension





555

View User's Profile E-Mail User Visit User's Homepage View All Posts By User U2U Member
adithorp

posted on 6/8/25 at 07:03 PM Reply With Quote
quote:
Originally posted by Dingz
Can you set them up in a lathe and machine a short spigot on one half and a recess for it to fit into in the other?


Usually both have a recess and the propshaft has spigots on its flanges.. You vould make a (stepped?) ring that fits in-between engaging both recess'.

Diff looks like Freelander maybe?

[Edited on 6/8/25 by adithorp]





"A witty saying proves nothing" Voltaire

http://jpsc.org.uk/forum/

View User's Profile View All Posts By User U2U Member
nick205

posted on 7/8/25 at 08:16 AM Reply With Quote
quote:
Originally posted by jacko
Looks like there is part of a VW beetle with toque. Suspension



It looks VW Beetle'ish to me, but I'm not really that familiar with the Beetle so not certain.

I guess it may be a mixture of donor parts choasen to achieve the desired layout.

View User's Profile View All Posts By User U2U Member
coyoteboy

posted on 7/8/25 at 08:42 AM Reply With Quote
quote:
Originally posted by nick9one1
quote:
Originally posted by coyoteboy
I'd be making the engine and diff a single assembly that bolts out/in, nothing else is going to be reliable there.


You probably cant tell from the first picture I posted, but I've done this. I built a subframe that both rigidly mount to. The subframe then sits on rubber engine mounts.

(upside down)


[Edited on 6/8/25 by nick9one1]

[Edited on 6/8/25 by nick9one1]


Ah in that case it should be fine if you do get it aligned properly. Sorry for the side-track.

View User's Profile E-Mail User View All Posts By User U2U Member

New Topic New Poll New Reply


go to top






Website design and SEO by Studio Montage

All content © 2001-16 LocostBuilders. Reproduction prohibited
Opinions expressed in public posts are those of the author and do not necessarily represent
the views of other users or any member of the LocostBuilders team.
Running XMB 1.8 Partagium [© 2002 XMB Group] on Apache under CentOS Linux
Founded, built and operated by ChrisW.