Was at Road America last weekend and had a great time running with nearly perfect weather. I know Road America is known for pad kickback issues if you use the curbs and it was something I have experienced many times at that track as well as at Road Atlanta with my old setup. Both the old and new cars used the PP Front and rear brakes with Carbotech pads and cooling added.
With the new car I was not sure what to expect but had all the same issues so at least it is consistent across both of my cars. For me Turn 8 and the brake zone at Canada both had to have brake checks to reset the pads. I use all the curb at the apex of 7 and the track out of 7, this is causing the issue as if I go through 7 clean I have a firm pedal at 8. I use the curbs though the kink apex and a little at track out as well. By the way they just reworked the gators at track out of the kink and added about a foot of concrete outside of the gators. The new gators are aggressive and the concrete outside of the gators is down right diabolical to drive on I would not advise getting on either if you can help it.
I am considering a 2psi residual valve to help reduce the issue but was wondering if anyone else is having the same issues and if they had tried the valves as a remedy.
I spoke with a few racer friends and they said its 50/50 if it will help or not, the concern is about spindle flex and that may be causing the rotor to deflect and push back the pads, but if the spindle is flexing it has to be combined with the bumps from the gators to cause the long pedal. For me it seems the vibration from the curbing and centrifugal force combined is the likely culprit.
Any ideas?
Dave
With the new car I was not sure what to expect but had all the same issues so at least it is consistent across both of my cars. For me Turn 8 and the brake zone at Canada both had to have brake checks to reset the pads. I use all the curb at the apex of 7 and the track out of 7, this is causing the issue as if I go through 7 clean I have a firm pedal at 8. I use the curbs though the kink apex and a little at track out as well. By the way they just reworked the gators at track out of the kink and added about a foot of concrete outside of the gators. The new gators are aggressive and the concrete outside of the gators is down right diabolical to drive on I would not advise getting on either if you can help it.
I am considering a 2psi residual valve to help reduce the issue but was wondering if anyone else is having the same issues and if they had tried the valves as a remedy.
I spoke with a few racer friends and they said its 50/50 if it will help or not, the concern is about spindle flex and that may be causing the rotor to deflect and push back the pads, but if the spindle is flexing it has to be combined with the bumps from the gators to cause the long pedal. For me it seems the vibration from the curbing and centrifugal force combined is the likely culprit.
Any ideas?
Dave