[s-cars] brake shudder

[Michael Lardizabal]

To Larry.......v v v v

--- On Tue, 5/4/10, LL - NY <larrycleung at gmail.com> wrote:


From: LL - NY <larrycleung at gmail.com>
Subject: Re: [s-cars] brake shudder
To: "JC" <jc at j2c3.com>
Cc: "S-CAR list" <s-car-list at audifans.com>
Date: Tuesday, May 4, 2010, 10:11 AM


FWIW, I've been able to clean off my HPS equipped rotors using their bedding
procedure, i.e. 6 - 8 75% braking "stops" from "roughly" (legal disclaimers
here, no units stated) 80 - 30, no coming to a stop in between. Seems to
work without melting them on the UrS.

Even though the speed differential is the same, due to the velocity squared
relationship of kinetic energy the aforementioned post is roughly 60% more
work, hence the potential HPS meltdown.
 
Its too early in the morning for that kind of scientific pjorn  .....i did the bedding protocol to no avail.  
 
 
 
 At Miss Piggy's weight, there are
more appropriate pads for track like braking than HPS.

On Tue, May 4, 2010 at 9:00 AM, JC <jc at j2c3.com> wrote:

> FWIW, I used to have the problem with a BIRA setup and HPS pads on a C5.  I
> liked the feel of the Hawks but never the way they'd load up the rotor.
>
> If it wasn't too bad usually the old high speed burn-off would do the trick
> and -->YES I know<-- that can make it worse but for minor pulsing it
> usually
> worked for me. Trick I was taught was doing it at very high speeds aka hard
> brake from <redacted illegal speed> down to say 30mph or so, then you can
> keep rolling, keep a lot of air going over the rotor, and don't leave the
> pads sitting on the rotor while everything is red-hot. Hard braking to full
> stop is usually guaranteed to make it worse. and If it's gotten too bad
> then
> this doesn't work as I guess the glaze is too heavy or baked in...
>
> > -----Original Message-----
> > From: s-car-list-bounces at audifans.com
> > [mailto:s-car-list-bounces at audifans.com] On Behalf Of Taka Mizutani
> > Sent: Monday, May 03, 2010 9:10 PM
> > To: lee at wheelman.com
> > Cc: s-car-list at audifans.com
> > Subject: Re: [s-cars] brake shudder
> >
> > Definitely- I've had this problem several times now with the
> > V70R, which has 996tt sized brakes front and rear.
> >
> > Pad composition is the big thing- I think Hawk HPS definitely
> > are not well suited to the car- I get this issue quite often.
> >
> > Axxis Deluxe did not do that, but they also felt like they
> > didn't stop at all with light to moderate brake pressure.
> >
> > The OE pads, which are super dusty (I think Ate or Textar) do
> > not do this, do not squeal, but dust like crazy.
> >
> > Taka
> >
>
>
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