GermanLook Forums  

Go Back   GermanLook Forums > Technical Section > Suspension

Reply
 
Thread Tools Display Modes
  #1  
Old April 1st 2010, 15:08
Plipton Plipton is offline
Registered User
 
Join Date: Apr 2010
Location: Guernsey
Posts: 8
IRS into 54 oval.... Track width problems

Hi All,

First post on here so hello to everyone

I am converting the rear of my oval to IRS but have found the rear wheels stick out too far so I need to narrow the trailing arms or buy some custom ones so that they tuck in under the arches.

So my questions for the forum....
  • What is the width of a stock early swing axle rear end ? (I don't have the original gearbox or axles etc to measure).
  • What is the width of a stock IRS rear?

Measurements (if possible) in mm and from drum to drum (wheel mounting face) please.

Nearest I have found on here is this post which gives me everything else I need to know.

Thanks
Plipton
Reply With Quote
  #2  
Old April 1st 2010, 19:02
NO_H2O's Avatar
NO_H2O NO_H2O is offline
Administrator
 
Join Date: Aug 2002
Location: Stockbridge, GA.
Posts: 2,810
If you use a 6 inch wide wheel with amore inset (ie and 52mm vs a 23mm inset) would that clear things up?
__________________
NO_H2O
72 1302 Smack Black GL
73 Bus (2L CIS Powered)
66 Beetle, 73 Standard Beetle
72 Pinzgauer 710M
Volksport Kafer Gruppe
Reply With Quote
  #3  
Old April 2nd 2010, 09:03
Plipton Plipton is offline
Registered User
 
Join Date: Apr 2010
Location: Guernsey
Posts: 8
Yeah it would........ but (at the risk of horrifying everyone on here) I want to stick to wide 5 stud pattern - I have a set of CSP disks which cost the fat end of £2000 and (horror of horrors) a set of original Empis so I can't really afford to replace them for quite a while.

Unfortunately all the wide 5s I've seen have next to no offset so I need to narrow the diagonal arms but it's a bit hit and miss without knowing the original measurements.

Cheers
Plipton
Reply With Quote
  #4  
Old April 2nd 2010, 10:07
Steve C's Avatar
Steve C Steve C is offline
Registered User
 
Join Date: Sep 2002
Location: Sydney, Australia
Posts: 1,757
Hi

I had Type 3, 4 stud rear brakes on a 1303, it was 1405 mm drum face to drum face.

I think the Type 3 brakes might add a few mm.

Steve
__________________
STI powered 1303 in the works.
Reply With Quote
  #5  
Old April 3rd 2010, 05:21
Plipton Plipton is offline
Registered User
 
Join Date: Apr 2010
Location: Guernsey
Posts: 8
Thanks Steve,

I have a pair of Type 3 drums to use as a comparison so should be able to use that as a starting point

Anyone out there got the same measurement for an early Type 1??

Ta
Rick
Reply With Quote
  #6  
Old April 3rd 2010, 08:09
NO_H2O's Avatar
NO_H2O NO_H2O is offline
Administrator
 
Join Date: Aug 2002
Location: Stockbridge, GA.
Posts: 2,810
You could have Boulton Wheels make up a set of wheels. They take wide 5 centers and weld them to a GM steel wheel hoop and can do any offset. So you could do a 15x6 with 55mm inset.
__________________
NO_H2O
72 1302 Smack Black GL
73 Bus (2L CIS Powered)
66 Beetle, 73 Standard Beetle
72 Pinzgauer 710M
Volksport Kafer Gruppe
Reply With Quote
  #7  
Old April 3rd 2010, 10:54
Plipton Plipton is offline
Registered User
 
Join Date: Apr 2010
Location: Guernsey
Posts: 8
Boutlon Wheels sounds like a possible plan. Do they have a website? I can't find them on Google.

Thanks
Reply With Quote
  #8  
Old April 3rd 2010, 20:15
NO_H2O's Avatar
NO_H2O NO_H2O is offline
Administrator
 
Join Date: Aug 2002
Location: Stockbridge, GA.
Posts: 2,810
I can find you some info.
__________________
NO_H2O
72 1302 Smack Black GL
73 Bus (2L CIS Powered)
66 Beetle, 73 Standard Beetle
72 Pinzgauer 710M
Volksport Kafer Gruppe
Reply With Quote
  #9  
Old April 4th 2010, 15:35
Plipton Plipton is offline
Registered User
 
Join Date: Apr 2010
Location: Guernsey
Posts: 8
Thanks
Reply With Quote
  #10  
Old April 4th 2010, 20:24
NO_H2O's Avatar
NO_H2O NO_H2O is offline
Administrator
 
Join Date: Aug 2002
Location: Stockbridge, GA.
Posts: 2,810
Here is a link to the place I ws thinking of. It is Stockton Wheel not Boulton.
http://www.stocktonwheel.com/
__________________
NO_H2O
72 1302 Smack Black GL
73 Bus (2L CIS Powered)
66 Beetle, 73 Standard Beetle
72 Pinzgauer 710M
Volksport Kafer Gruppe
Reply With Quote
  #11  
Old April 5th 2010, 08:52
Plipton Plipton is offline
Registered User
 
Join Date: Apr 2010
Location: Guernsey
Posts: 8
Thanks for that. I'll give them a call and see what they can do. Looks like they may be able to make 15s into 16s which would look a whole lot better

Meanwhile, if anyone could measure their early SA bug rear end it would be much appreciated.
Reply With Quote
  #12  
Old April 6th 2010, 13:54
oasis's Avatar
oasis oasis is offline
Registered User
 
Join Date: Dec 2002
Location: timonium, md usa
Posts: 1,290
While you are waiting for your answer, I'm curious ... besides wanting to maintain the wide-five pattern, was putting an oval on an IRS chassis otherwise difficult?
__________________
(2004-2008): 1971 1302 w/2056
Searching for a new project ...
Reply With Quote
  #13  
Old April 6th 2010, 15:02
Plipton Plipton is offline
Registered User
 
Join Date: Apr 2010
Location: Guernsey
Posts: 8
No, not at all. Only the rear body mounts had to be lifted to accommodate the later shock mounts. I used a '69 semi-auto IRS chassis with a clutch tube welded into the tunnel.

However, that was the '56. Many years after being "restored" I found that it had been done badly with non-original parts. That's not to say it is beyond use but that the heater channels and valances are wrong for the year. I was tempted to get it all redone and then at the VolksWorld show last year I was offered a near-perfect 54 shell and chassis for 1/2 the cost of the repairs so I grabbed it.

The chassis I am now using is the '54 but with IRS diagonal arm mounts welded into the rear forks.

Here's some pics of the 56 on the 69 chassis....







Edited to say - oops just noticed the first pic is of the SA chassis

Last edited by Plipton; April 6th 2010 at 15:14.
Reply With Quote
  #14  
Old April 6th 2010, 15:12
Plipton Plipton is offline
Registered User
 
Join Date: Apr 2010
Location: Guernsey
Posts: 8
The trouble is the offset on wide 5s is much less than the later 4 stud wheels so they don't fit under the arches without some work. I like the arches to look full so I need to get this spot on!
Reply With Quote
Reply

Tags
irs, swing, track, wheel, width


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 11:26.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
© www.GermanLook.net 2002-2017. All Rights Reserved