GT3 Brake System Design
10-23-2004, 10:17 PM
#1
Rennlist Member
Thread Starter
GT3 Brake System Design
Several of you keep saying that Porsche AG did not design the front brake cooling system properly for the GT3 street model. Please consider the following engineering compromises.
1. The car has to be street legal.
2. The car will be operated by drivers with widely varying braking skills.
3. The car's brakes must operate safely in various environments such as cold and hot ambient temperatures, arid/dusty, rain, snow, and wet conditions.
4. Expect the car to be operated on occasion on race tracks and in autocrosses.
5. Adequate (okay, somewhat adequate) ground clearance for normal street conditions.
6. Adequate turning radius, brake air vents and hoses can and do limit the turning radius on some Porsche 993/996 race cars.
7. Reasonable life for brake components (obviously much shorter life under hard use such as that experienced on track).
8. Brake system sounds and level (i.e. squealing, clunking, chatter)
9. Brake dust
10. Brake pedal feel and effort (pedal pressure).
Furthermore, all this talk about cross drilled iron brake disks. As we know they have their advantages and disadvantages. Nobody has come up with the perfect disk for all conditions! Remember part of the 'perfect' is the cost $ $ $.
1. The car has to be street legal.
2. The car will be operated by drivers with widely varying braking skills.
3. The car's brakes must operate safely in various environments such as cold and hot ambient temperatures, arid/dusty, rain, snow, and wet conditions.
4. Expect the car to be operated on occasion on race tracks and in autocrosses.
5. Adequate (okay, somewhat adequate) ground clearance for normal street conditions.
6. Adequate turning radius, brake air vents and hoses can and do limit the turning radius on some Porsche 993/996 race cars.
7. Reasonable life for brake components (obviously much shorter life under hard use such as that experienced on track).
8. Brake system sounds and level (i.e. squealing, clunking, chatter)
9. Brake dust
10. Brake pedal feel and effort (pedal pressure).
Furthermore, all this talk about cross drilled iron brake disks. As we know they have their advantages and disadvantages. Nobody has come up with the perfect disk for all conditions! Remember part of the 'perfect' is the cost $ $ $.
10-23-2004, 11:44 PM
#2
Burning Brakes
Join Date: Nov 2001
Location: Jupiter
Posts: 1,093
Likes: 0
Received 0 Likes
on
0 Posts
You forgot one:
11) Cheap! PAG is a profit making enterprise.
But you do do a very good job of making your point. Very few people have problems with the current 996 GT3 Mk2. The Mk1 was a different story. But for the Mk2 it is adequate for the vast majority of users.
Stephen
11) Cheap! PAG is a profit making enterprise.
But you do do a very good job of making your point. Very few people have problems with the current 996 GT3 Mk2. The Mk1 was a different story. But for the Mk2 it is adequate for the vast majority of users.
Stephen
10-24-2004, 10:25 PM
#3
Rennlist Member
Thread Starter
FixedWing
You are correct, number 11 is cost / profit for the entire system. They have to be making a killer profit on those iron disks alone, which aren't exotic. The research and design costs were covered decades ago.
You are correct, number 11 is cost / profit for the entire system. They have to be making a killer profit on those iron disks alone, which aren't exotic. The research and design costs were covered decades ago.
