[s-cars] RS6

[Robin St.Clair]

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John
Those rotors you admire are better used as boat anchors, or hose stands in =
the dyno room.
The design is ill executed. If you examine the rotors you will see that the=
re is no way that air can get into the centre of the rotors to be centrifug=
ally spun out, cooling the rotors on the way.
To add insult to injury, mounting the rotors on (13, from memory) isolating=
 pins, causes the heat to stay in the rotors.
These rotors are easily destroyed, the callipers selected by quattro GmbH d=
on't help the cause, either. The (expensive) 8 piston rotors are designed t=
o use quite small pads. This encourages hot spotting and even sets the pads=
 on fire. As the car is automatic, the pads are more frequently engaged tha=
n is the case with a manual.
Champion Racing learned all this when they first started campaigning their =
RS6s.
In truth, for high speed road use, I mean up to 200 MPH, there is not a sat=
isfactory solution presently available. A major player in the brake busines=
s is having new thicker rotors manufactured later this year, these will be =
390-400 mm diameter and 34 or 36 mm thick with very sophisticatedly shaped =
and profiled inner vanes.
Such cars as the Cayenne Turbo, the Bentley Continental GT and their cousin=
s have opened up the top end of the brake market - how much will these cost=
, best not to ask, particularly with the dollar so weak presently.

HTH
R+C


Forwarded Message From:"JOHN TILDEN" <j.tilden at verizon.net>To:s-car-list at au=
difans.comDate:Tue, 22 Jul 2003 11:04:02 -0700Subject:[s-cars] RS6


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This is a multi-part message in MIME format.--[ Picked text/plain from mult=
ipart/alternative ]So what is with those brakes on the RS6?Spoked Ventilate=
d Disks? look pretty cool, what do they cost?John1995.5 S6 Wagon--



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