Ford Sierra/Sapphire/RS500 Cosworth This forum is for discussion of all things pertaining to the Ford Sierra Cosworth.

rear alignment/geometry

Thread Tools
 
Search this Thread
 
Old Jan 19, 2006 | 03:16 PM
  #1  
opposite lock's Avatar
opposite lock
Thread Starter
PassionFord Post Troll
iTrader: (3)
 
Joined: May 2005
Posts: 2,504
Likes: 3
From: essex,
Default rear alignment/geometry

Hi Everyone can anyone shed some light on an apparently well known issue of the saff cos never being totally straight and true at the rear from factory.
I remember reading about it somewhere ages ago , a company that has a kit that adjusts the setup to fix the problem. inner edges of tyre have increase wear due to the prob although ive never noticed it.
It was only that my friend started going on about it without knowing id read about it , so he,s heard it somewhere aswell
Any info would be gratefull
flint 2wd lattice standard
Reply
Old Jan 19, 2006 | 08:13 PM
  #2  
vyper developments's Avatar
vyper developments
Regular Contributor
 
Joined: Jan 2005
Posts: 215
Likes: 0
From: South Devon
Default

Hi mate,
the scuffing of the inner edges of the rear tyres is caused by hard acceleration, the back of the car squats under power causing the camber angle to go negative (that is the top of the wheels incline inwards at the top) this causes increased loadings on the inner edges of the tyres thus increased wear in this area.
This is not a problem with suspension geometery a lot of cars with similar rear suspension show this trait.

CheeRS, Mike.
Reply
Old Jan 19, 2006 | 09:50 PM
  #3  
JamesH's Avatar
JamesH
10K+ Poster!!
iTrader: (21)
 
Joined: Jul 2003
Posts: 10,807
Likes: 8
From: .
Default

Originally Posted by vyper developments
Hi mate,
the scuffing of the inner edges of the rear tyres is caused by hard acceleration, the back of the car squats under power causing the camber angle to go negative (that is the top of the wheels incline inwards at the top) this causes increased loadings on the inner edges of the tyres thus increased wear in this area.
This is not a problem with suspension geometery a lot of cars with similar rear suspension show this trait.

CheeRS, Mike.
Totally correct!


I'm fitting Ahmed spring into Koni shocks, and rear Shims (all from MikeR). This should not lower it TOO much, and cure about 50% of the wear problem
Reply
Old Jan 20, 2006 | 02:03 PM
  #4  
opposite lock's Avatar
opposite lock
Thread Starter
PassionFord Post Troll
iTrader: (3)
 
Joined: May 2005
Posts: 2,504
Likes: 3
From: essex,
Default

Originally Posted by vyper developments
Hi mate,
the scuffing of the inner edges of the rear tyres is caused by hard acceleration, the back of the car squats under power causing the camber angle to go negative (that is the top of the wheels incline inwards at the top) this causes increased loadings on the inner edges of the tyres thus increased wear in this area.
This is not a problem with suspension geometery a lot of cars with similar rear suspension show this trait.

CheeRS, Mike.
Ah right thats where the rumour has emerged from . Sorry Ford for suggesting such a thing !! thanks for that info .Gonna re bush the lot at the back and perhaps one of them new style rear diff hanger as read that they can cause some movement when old.
cheeRS Mike.
Reply
Old Feb 16, 2006 | 11:08 AM
  #5  
coswol's Avatar
coswol
Part of the Furniture
iTrader: (1)
 
Joined: Dec 2005
Posts: 191
Likes: 0
From: SPAIN
Default

any photo?
Reply
Old Feb 18, 2006 | 01:42 PM
  #6  
2001ode's Avatar
2001ode
Too many posts.. I need a life!!
iTrader: (1)
 
Joined: May 2004
Posts: 570
Likes: 1
From: France / Paris
Default

Hi,

Some pics, all dimension in millimeters.





Claude
Reply
Old Feb 24, 2006 | 08:04 PM
  #7  
coswol's Avatar
coswol
Part of the Furniture
iTrader: (1)
 
Joined: Dec 2005
Posts: 191
Likes: 0
From: SPAIN
Default

great

thanks mr.
Reply
Old Mar 28, 2006 | 12:33 PM
  #8  
VICFR2's Avatar
VICFR2
Virgin
 
Joined: Mar 2006
Posts: 2
Likes: 0
Default Sierra rear camber

vyper developments
Hi
Are you the MikeR that sells the rear camber shims for a XR4x4 2.9?
Thanks
Vic Roper
Reply
Old Mar 28, 2006 | 08:10 PM
  #9  
JamesH's Avatar
JamesH
10K+ Poster!!
iTrader: (21)
 
Joined: Jul 2003
Posts: 10,807
Likes: 8
From: .
Default

http://randbmotorsport.co.uk/shop/De...?ProductID=178

For a Cossie
Reply
Old Mar 29, 2006 | 03:12 PM
  #10  
EricYellow's Avatar
EricYellow
Wahay!! I've lost my Virginity!!
 
Joined: Feb 2006
Posts: 74
Likes: 0
From: Netherlands
Default

Anybody got some pics on where these shims go ?
Or even better, a mounted set of shims
I've been looking at some pictures of the rear suspension but can't really place them....
Reply
Old Mar 29, 2006 | 08:20 PM
  #11  
JamesH's Avatar
JamesH
10K+ Poster!!
iTrader: (21)
 
Joined: Jul 2003
Posts: 10,807
Likes: 8
From: .
Default

You have to take the rear disc's off, then they go behind the rear hubs
Reply
Old Mar 29, 2006 | 09:12 PM
  #12  
rapidcossie's Avatar
rapidcossie
10K+ Poster!!
 
Joined: May 2004
Posts: 14,907
Likes: 1
From: scotland
Default

i have the rear shims but did not fit them.

after a bit of thought surely they would cause the brakes to wear unevenly as the caliper is bolted to the hub, which will no wbe at an angle due to the shims?
Reply
Old Mar 29, 2006 | 10:55 PM
  #13  
robrs2's Avatar
robrs2
Advanced PassionFord User
 
Joined: May 2004
Posts: 1,648
Likes: 18
From: Teesside
Default

The shim goes between the hub and the arm, does not affect the caliper to disc position.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
155lee
Ford RS Turbo Parts for Sale
4
Sep 6, 2016 11:10 AM
S3an
Pictures, video & Photoshop Forum
4
Sep 26, 2015 11:39 PM
S3an
General Car Related Discussion.
13
Sep 13, 2015 10:01 AM
The Enigma
Ford Sierra/Sapphire/RS500 Cosworth
2
Sep 12, 2015 10:12 PM
cossirob
General Car Related Discussion.
0
Sep 3, 2015 09:17 PM




All times are GMT. The time now is 03:00 AM.