General
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| General
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Q: 1. What dictates my brake system performance?
A: Brake system performance is dictated by front & rear caliper choices, master cylinder sizing, front & rear brake balance and choice of pad compounds. |
Q: 2. Why should I square mount my brake calipers with the rotor?
A: Brake calipers should be mounted square with the rotor to prevent excessive piston knock-back, pad drag and uneven pad wear. |
Q: 3. When should I replace my caliper seals?
A: Top stock car and road race teams usually replace caliper seals after any event where high temperatures are reached. |
Q: 4. Can differential piston bore calipers be used interchangeably?
A: Differential piston bore calipers cannot be used interchangeably from side to side because it will cause increased pad taper and reduce overall braking efficiency. |
Q: 5. What could cause me to lose my pedal during a race?
A: Two of the reasons you may lose your pedal during a race may be due to: an undersized brake system or inadequate ducting. |
Q: 6. Why should iron rotors and brake pads be bedded-in before using?
A: All new iron rotors and brake pads should be bedded-in before being used under racing conditions to prevent thermal shock and rotor warping. |
Q: 7. When should I go to a smaller caliper?
A: If you can go to a smaller brake pad without running out of pad before you run out of event, then a smaller lighter caliper may be for you. |
Q: 8. Do you have any tips regarding caliper mounting bolts?
A: All caliper mounting bolts should be of the highest quality and lockwired for safety. |
Q: 9. When should I replace my bleed screws?
A: Bleed screws should always be replaced when new seals are installed in the caliper. |
Q: 10. When should I replace my rotor mounting bolts & lockwire?
A: Replace rotor mounting bolts & lockwire whenever replacing rotors, and inspect mounting hats or hubs for signs of abuse. |
Q: 11. What causes pedal fade?
A: Pedal fade can be the result of fluid boiling in the calipers, characterized by the pedal feeling spongy & traveling closer to the floor. |
Q: 12. Will a larger master cylinder reduce pedal travel?
A: A larger master cylinder will reduce pedal travel but will also increase driver effort. |
Q: 13. What are Dry & Wet Boiling Points?
A: The Dry Boiling Point is the temperature at which a blake fluid will boil in its virgin non-contaminated state. The Wet Boiling Point is the temperature a brake fluid will boil after it has been fully saturated with moisture. |
Q: 14. What causes vibration in the brake system?
A: In the latter stages of a race, a vibration in the brake system could be caused by pad material buildup on rotors or a cracked rotor. |
Q: 15. What causes a spongy pedal?
A: A spongy pedal can occur because of: air in the line, excessive caliper deflection, or incorrect caliper/master cylinder bore combination. |
Q: 16. When should I flush out my brake fluid?
A: Once brake fluid has boiled, it no longer has the ability to resist further boiling, creates air in the system and should be completely flushed from the system. |
Q: 17. What causes my brake pedal hard to push?
A: An oversized master cylinder can cause your pedal to be hard to push. |
Q: 18. What causes brake drag?
A: Brake drag can be caused by a failing master cylinder, incorrect use of Residual Pressure Valves, misaligned calipers, seals in need of replacement or a badly adjusted brake pedal. |
Q: 19. What could cause my brake pads to glaze?
A: Brake drag may cause the brake pads to glaze, reducing friction and severely limiting the ability to stop the car. |
Q: 20. How can I find the proper brake pad compound?
A: The proper brake pad compound for you can be found through a trail and error process, or contact Randall Race Parts for recommendations. |
