Re: Rofren Pads???

[Jeremy R King <kingjer@eng.auburn.edu>]

In fact.  Friction, by definition, is a phenomenon that changes 
mechanical energy (rotation of a wheel for instance) to thermal energy 
(heat).  It seems to me that the higher the coefficient of friction (I 
assume that's what "cf" is supposed to stand for) would necessarily mean 
more heat is generated under the same applied braking force.  Usually 
performance pads are thinner than non so they can warm up faster to get 
good grip the first time they're used.  The only real difference heat 
wise in the pads is that the high performance pads are made of a material 
with a higher temperature tolerance.  That is, the pad material can 
withstand higher temps than regular pads with getting gooey.  Heat 
transfer is largely the job of the rotor.

Jeremy R. King
1986 VW Quantum GL5
Audi at Heart
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On Tue, 31 Oct 1995, Richard Funnell wrote:

> Eric,
> 
> >Remember your
> >also talking about a Pad compound that has a cf of around .36  the CC
> >have anywhere between .48 and .54cf  so the heat rejection potential has
> >been increased 60% for the pad alone.
> 
> This part I don't follow.  I would assume the cf determines how much force
> needs to be applied to the pad to generate a certain braking force.  The
> amount of heat generated would presumably depend on the braking force and
> its duration.  I don't see how cf relates to heat generation or rejection.
> Am I missing something?
> 
> Richard Funnell,
> San Jose, California
> '83 urQ
> '87 560 SL
> 
>