Brake Setup Advice please
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DanielB (12-12-2018)
#22
Dunno. In my head this is already normal to me lol. No complaints at all. I'm happy that the rotors last as long as they do. I also run the Urge rears and they have lasted about 13 days so far but the little micro cracks are not so micro anymore and are getting quite close to the edge so I'm guessing I have another 3-4 days on them. Just received replacement rings last week for when they do decide to crack.
#23
Since you are running competitive events on Hoosier A7 tires with close to stock power levels and are a pretty fast driver, wouldn't you use less braking than most of the others with elevated power levels, less sticky tires, and in non-competitive/less-competitive events?
#24
Since you are running competitive events on Hoosier A7 tires with close to stock power levels and are a pretty fast driver, wouldn't you use less braking than most of the others with elevated power levels, less sticky tires, and in non-competitive/less-competitive events?
#25
#26
Cool-down procedure is really important as you get into higher rotor and caliper temps (which will almost certainly come hand-in-hand with more aggressive pads). If you're coming off track on a hot lap and parking the car, you're going to crack rotors. I try to do a full cool-down lap (fast as possible with minimum braking) and then circle the paddock or access roads for a full 5 minutes before stopping, and then I still push the car forward after a few minutes of sitting to expose the hot part of the rotor under the caliper. I'm usually still circling the paddock while everyone else is looking at their video. My stock sized rotors have lasted a lot longer as I got more and more anal about cool-down.
#27
Cool-down procedure is really important as you get into higher rotor and caliper temps (which will almost certainly come hand-in-hand with more aggressive pads). If you're coming off track on a hot lap and parking the car, you're going to crack rotors. I try to do a full cool-down lap (fast as possible with minimum braking) and then circle the paddock or access roads for a full 5 minutes before stopping, and then I still push the car forward after a few minutes of sitting to expose the hot part of the rotor under the caliper. I'm usually still circling the paddock while everyone else is looking at their video. My stock sized rotors have lasted a lot longer as I got more and more anal about cool-down.
#28
Cool-down procedure is really important as you get into higher rotor and caliper temps (which will almost certainly come hand-in-hand with more aggressive pads). If you're coming off track on a hot lap and parking the car, you're going to crack rotors. I try to do a full cool-down lap (fast as possible with minimum braking) and then circle the paddock or access roads for a full 5 minutes before stopping, and then I still push the car forward after a few minutes of sitting to expose the hot part of the rotor under the caliper. I'm usually still circling the paddock while everyone else is looking at their video. My stock sized rotors have lasted a lot longer as I got more and more anal about cool-down.
I would have thought they require the cars to slow down after they wave the flag ending the session. that is the cool-off lap. Most of the heat should be gone at that point.
It sounds like the issue is that your rotor mass and brake cooling are marginal for your tires, wt/hp, aero, driving style, and track layout. Addressing that is probably the better solution.
#29
It would be interesting if you folks could find any authoritative source on driving around the paddock. I can't imagine any race organizer having cars randomly driving around a crowded paddock with people moving and cars gridding. Dedicated race cars would not be driving around access roads.
I would have thought they require the cars to slow down after they wave the flag ending the session. that is the cool-off lap. Most of the heat should be gone at that point.
It sounds like the issue is that your rotor mass and brake cooling are marginal for your tires, wt/hp, aero, driving style, and track layout. Addressing that is probably the better solution.
I would have thought they require the cars to slow down after they wave the flag ending the session. that is the cool-off lap. Most of the heat should be gone at that point.
It sounds like the issue is that your rotor mass and brake cooling are marginal for your tires, wt/hp, aero, driving style, and track layout. Addressing that is probably the better solution.
One cool down lap is still sometimes not enough. I've measured my rotor temps still at 450+ after a full cooldown lap.
I really don't think I have an issue with the brakes at all. I'm on A052's, bolt on power, no wing and yes I think i do have a aggressive driving style. The brakes are providing the stopping power I need with perfectly even pad wear. They last 3-4x's stock rotors. I'm a happy camper.
#30
I found some PCA events will throw the checkered flag giving me about 1/4 lap to cool down. I expect they do this to maximize time on the track, but when I had the stock rotors it was not possible to cool them enough without further driving in the pits. But I agree with DavidNJ's point that this is not a good solution, and certainly not scalable if many were to do it. Given how protective many Porsche owners are of their cars, I was surprised at this, but I've experienced it at events in Colorado and Utah, so it's not an isolated thing.
BTW, not trying to rail on the PCA guys - they run first class events with lots of safe track time. Just didn't expect it.
BTW, not trying to rail on the PCA guys - they run first class events with lots of safe track time. Just didn't expect it.