BigRed results Frank? Also: Porsche brakes matrix, test data

["Leigh C. Anderson" <Leigh_Anderson@compuserve.com>]

<Frank wrote:  I will post measurements of 60 to 0 mph braking distances as
measured from
<my gtechpro for A) stock brakes, wheels & tires, B) stock brakes, 17"
wheels
<& tires, C) upgraded brakes, 17" wheels & tires, if anyone is interested.

Yes!  I'm interested!  any results available?  impatient huh?  ;-)

BTW - Suggestion for more meaningful track day type test, try doing more
like 90 or 100 to zero for 6 or 8 runs, and report the results of each nth
run.  At the end is a report from Mov'It using a Corvette for example. 
Very dramatic results

I have to decide by Tuesday to tell my shop to put 993 vanilla
calipers/rotors on, OR  the bigreds.  Still trying to figure out
cost-effectiveness.  May not have to get new wheels if i use vanilla 993
that have swept area that is WAY more than G60s whatever they are but about
24% less than big reds. Still getting $ data.

What is the pad area on G60s, BTW?

Here's the data on the 3 logical porsche brake upgrade choices for
200/S4/S6 cars:

model                   Front/Rear rotor mm   pad area   % of big red
--------               ------------------------------      -------------   
      ------------------
993 'vanilla'      304x32 / 299x24               422                76% 
(these are 50% bigger than a '90-'92 Carrera2 brake!)

993 Twin Turbo   322x32 / 322x24             552              100% 
(BigReds)
993 C4S   same       
993 RS     same

996 Carrera        318x28 / 299x24              450               82%  the
"new 911"
one-piece patented calipers

For a great article on brakes, pads, juice got to
http://www.rennsportsystems.com/~porsche/ and click on "Talk", look for the
brake article

============== here's the iterative brake test results

Just for FYI, here is a Corvette test of repetitive braking from Mov'It in
Germany, very dramatic diff:

We sped the Vette up to 60/120 mph and stopped it about 8 times in a row
really hard to 0 mph.

Cold rotors 60>0.............125ft with stock rotors, 115ft with Porsche
rotors 
Hot rotors 60>0...............135ft with stock rotors, 117ft with Porsche
rotors 

From 120>0, the differences between the stock & Porsche brakes are more
dramatic:
1st time, Porsche was 30 ft better! (cold rotors)
4th time, Porsche was 63 ft better!!!
6th time, Porsche was 117 ft better!!!!
8th time, the stock ZR1 rotors were glowing red with no stopping power &
test was terminated!!!!!


Cheers,
Leigh

QUATTROS UBER ALLES!