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Re: Disk brake problem - long and boring !!

To: Tim.Mullen@ngc.com
Subject: Re: Disk brake problem - long and boring !!
From: Dave & Marlene <rusd@velocitus.net>
Date: Fri, 27 Feb 2004 14:11:29 -0700
Hey Guys,

Note the qualifier in the statement. Actually a big IF on a lot of 
street driven cars. A more likely cause of warped rotors, other than 
braking too hard, is  over torquing or uneven torquing the wheel studs. 
Carelessly running the lug nuts on with an big air wrench is a common 
cause of warped rotors. I only go to tire shops that use a torque wrench 
to tighten the lug nuts.

Obviously some rotors are designed stronger than others & maybe can 
stand this abuse. Others can't.

Quote:
"With one qualifier, presuming that the hub and wheel flange are flat 
and in good condition and that the wheel bolts or hat mounting hardware 
is in good condition, installed correctly and tightened uniformly and in 
the correct order to the recommended torque specification, in more than 
40 years of professional racing, including the Shelby/Ford GT 40s  one 
of the most intense brake development program in history - I have never 
seen a warped brake disc."

Dave Russell

Tim.Mullen@ngc.com wrote:
> 
> I've seen the article.  However, I have in fact had warped rotors, 
> that the article says can't happen.  The sides same thickness all 
> around, but the sides were not parallel - they were so badly warped
> that it would push the pads back enough that I'd have to pump them
> a couple of time to get the fronts to work.

> One likely cause of warping is braking too hard.  
> Tim Mullen






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