brake disc runout question
24-10-2006, 08:02 PM
#1
PassionFord Post Whore!!
Thread Starter
Join Date: May 2003
Location: huddersfield
Posts: 5,807
Likes: 0
Received 0 Likes
on
0 Posts
brake disc runout question
i doubt it but would a brake disc running out by .3 of a mm and varying in thickness by . 35 be enough to cause steering wheel judder under braking ?
matt
p.s. dave i got the "bit"
matt
p.s. dave i got the "bit"
24-10-2006, 08:31 PM
#3
PassionFord Post Whore!!
Thread Starter
Join Date: May 2003
Location: huddersfield
Posts: 5,807
Likes: 0
Received 0 Likes
on
0 Posts
cheers john, just skimmed them both at work,
discs are now within .1 thickness all round and runout is about .08mm
see if that improves things
matt
discs are now within .1 thickness all round and runout is about .08mm
see if that improves things
matt
24-10-2006, 08:38 PM
#4
PassionFord Post Troll
Join Date: May 2003
Location: Leeds
Posts: 2,892
Likes: 0
Received 0 Likes
on
0 Posts
That sound better mate...have you checked run-out on your drive flanges/hubs? As in my experiance this is probably what is causing the run-out in the discs in the first place.
Also don't forget that there is a chance that the disc run-out 'spots' [where the disc has been touching the pads] could have been work hardened [due to the elevated temperatures provided by the friction at the pad/disc contact] and therefore when you put the discs back on the vibration may re surface due to the work hardened areas not wearing as fast and again producing varying disc thickness and hence run-out
Also don't forget that there is a chance that the disc run-out 'spots' [where the disc has been touching the pads] could have been work hardened [due to the elevated temperatures provided by the friction at the pad/disc contact] and therefore when you put the discs back on the vibration may re surface due to the work hardened areas not wearing as fast and again producing varying disc thickness and hence run-out
Thread
Thread Starter
Forum
Replies
Last Post