[s-cars] Big Reds Question?

[Keith Maddock]

FWIW

The calipers for the 304x32 should really be considered "Medium Reds" (RS2) 
or "Medium Blacks" (968/944S2 M030, 944 Turbo S, 928S4).  They have the 
same piston sizes as the Big Reds, but smaller pads.

"Little Blacks" would refer to the non-M030 calipers for 968 / 944S2 and 
have smaller piston sizes and even smaller pad sizes.

Cheers,
Keith

keith at maddock.com    http://keith.maddock.com/

93 S4 (Big Reds) Portland OR
95 968CS (Little Blacks but Movit's soon) Koblenz, DE
1/8 89 GTI  16V (Light Car = Tiny Brakes!)  Nürburg, DE

Mihnea wrote:
>The RS2 has only had 2 front brakes sizes:
>
>304x32 for the small reds
>322x32 for the big reds.
>(snippage!)
>Mihnea
>
>At 18:48 28/01/2004 +0100, Richard Tanimura wrote:
>>
>>Yes I know the first RS2 was a 304x32. I just thought that bringing it up
>>would add to the background noise. But the second RS2 was 314x32 not 323x32.
>>It says so in the FA under the RS2. I happened to have looked this up the
>>other day. The both went with the Little Red = S4 caliper.
>>
>>(snippage!)
>>
>>-----Original Message-----
>>From: Linus Toy [mailto:linust at mindspring.com]
>>
>>FWIW, the original RS2 rotor was 304x32, under a "small" red caliper as you
>>refer to it.  The "upgraded" RS2 rotor was 322x32 of the 993tt, under the
>>Big
>>Red caliper of the 993tt.  Both sizes are stock Porsche rotors--remember,
>>the
>>RS2 used a Porsche spec hub and bolt circle, 5x130, instead of the normal
>>Audi
>>5x112.
>>
>>(snippage!)
>>
>> > -----Original Message-----
>> > From: Richard Tanimura [mailto:richard at tanimuras.com]
>>(snippage!)
>> > The "factory" solution is actually just a bracket (Audi PN
>> > 8A0 615 125 A). It was designed to fit the RS2,928 S4, 944
>> > TurboS, 968 M030 (Little Red) caliper to a Porsche hub
>> > carrying a 314x32 Porsche rotor. The "factory" never intended
>> > it to adapt the "Big Red" to an Audi hub carrying a 323x30
>> > Audi rotor. I think that's why you need the 5 mm spacers (the
>> > rotor diameter is 9 mm larger). I think the centerline of the
>> > rotor is also slightly displaced relative to the caliper, but
>> > when you think of all the factors that are different, it is
>> > amazing the thing works at all.
>> >
>> > So if you want perfect centering and no spacers, you need a
>> > custom bracket made for a specific caliper-rotor combination.
>> > ECS, Movit, BIRA and others have developed such brackets.
>> >
>> > Rich