.2RS Added Brake Cooling = trackable PCCBs?
05-09-2018, 09:53 AM
#31
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Thread Starter
Thanks for the input. I am trying to decide to option iron or PCCB on the next car. I have AP racing take offs from the GT3 which I would use for track if I went iron or I could sell them and go ST for little more than PCCB. With the ability to resurface once a year, that seems like the best option.
05-09-2018, 12:13 PM
#33
Three Wheelin'
The PCCBs make the GT3 a different car.
In my experience, straights are 10 - 15 meters longer before the brake zone initiation with PCCBs at speeds around 100 mph and lower.
Something to be keenly aware of when transitioning to steel rotors. Especially back to back sessions in GT3s with different brakes.
I don't have any experience with ST rotors.
First world dilemmas :-)
Have Fun!
In my experience, straights are 10 - 15 meters longer before the brake zone initiation with PCCBs at speeds around 100 mph and lower.
Something to be keenly aware of when transitioning to steel rotors. Especially back to back sessions in GT3s with different brakes.
I don't have any experience with ST rotors.
First world dilemmas :-)
Have Fun!
05-09-2018, 12:22 PM
#34
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OEM calipers are same, except the body of the yellow calipers has a shape that acts similar to an integrated spacer which lets it work with the larger diameter rotors. It is not possible to use the smaller iron rotors with PCCB calipers for this reason, but you can add a spacer to the red calipers to work with larger rotors.
05-09-2018, 01:52 PM
#36
05-09-2018, 01:55 PM
#37
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Not sure about having to change.
i love the RE10 for steel. Pagids were recommended by ST and the combo works crazy good, so I haven’t looked around, 12 track days so far.
i love the RE10 for steel. Pagids were recommended by ST and the combo works crazy good, so I haven’t looked around, 12 track days so far.
05-09-2018, 04:16 PM
#38
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The PCCBs make the GT3 a different car.
In my experience, straights are 10 - 15 meters longer before the brake zone initiation with PCCBs at speeds around 100 mph and lower.
Something to be keenly aware of when transitioning to steel rotors. Especially back to back sessions in GT3s with different brakes.
I don't have any experience with ST rotors.
First world dilemmas :-)
Have Fun!
In my experience, straights are 10 - 15 meters longer before the brake zone initiation with PCCBs at speeds around 100 mph and lower.
Something to be keenly aware of when transitioning to steel rotors. Especially back to back sessions in GT3s with different brakes.
I don't have any experience with ST rotors.
First world dilemmas :-)
Have Fun!
It's interesting, but I don't know if there's any data to support that PCCBs stop better. In theory the stopping distances should be same for both brakes with the limiting factor being the tires. The iron brakes should be able to provide the same amount of brake torque, just less thermal efficiency. Is it possible that it's the mental factor of you thinking that you have better brakes with PCCBs being more confidence inspiring, so you're more comfortable going deeper into the braking zone?
05-09-2018, 04:22 PM
#40
Three Wheelin'
It's interesting, but I don't know if there's any data to support that PCCBs stop better. In theory the stopping distances should be same for both brakes with the limiting factor being the tires. The iron brakes should be able to provide the same amount of brake torque, just less thermal efficiency. Is it possible that it's the mental factor of you thinking that you have better brakes with PCCBs being more confidence inspiring, so you're more comfortable going deeper into the braking zone?
05-09-2018, 04:25 PM
#41
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Pretty sure the weight is not significant enough to notice differences in acceleration or braking. Certainly not 10-15 meters worth. I would bet that it's the mental factor more than anything else
05-09-2018, 04:33 PM
#42
Three Wheelin'
1 lbs of unsprung weight is approximately 15.5 lbs of sprung weight. So if we reduce the unsprung weight by 10 lbs per corner = 40 lbs unsprung weight = 620 lbs lighter sprung weight. Much better performance.
05-09-2018, 04:40 PM
#43
Three Wheelin'
I highly recommend going to the nearest Porsche Experience Center and see for yourself. You will learn lots and have a great time!
05-09-2018, 04:42 PM
#44
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I don't have a PhD in physics, but that just doesn't sound right logically. The car weighs around 3100 lbs total. You're telling me that PCCB = 23% weight difference?
If that was the case the lap time difference between iron and PCCBs would be MASSIVE, but it's basically the same (maybe a tiny fraction slower).
05-09-2018, 04:47 PM
#45
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I've been to Atlanta -- drove a GT4 with PCCB. Definitely a great time. I also had a .2GT3 with PCCB. But now I'm not so sure about ordering them in the .2 RS since I want to do more track time with it.