Pedal box / Bias bar
Floor-mounted pedal box are most common aftermarket in racing and are easier to mount.
Top-mounted pedal box are common in OEM cars but are more difficult to fit.
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Racing pedal box with bias bar / balance bar
The brake pedal drops a lot when braking
- Master brake cylinder too small
- Too large piston area in the brake caliper
- Air in the brake system
- Leakage in the brake system
- Powerful brake servo
- Big brake pedal ratio
- Brake pads are far from brake disc in "rest" position
The push rod goes far into the master brake cylinder
- Master brake cylinder too small
- Too large piston area in the brake caliper
- Air in the brake system
- Leakage in the brake system
- Powerful brake servo
- Brake pads are far from brake disc in "rest" position
Insufficient braking power
- Race brake pads are used that have not been warmed up yet.
- Brake pads with insufficient friction / "glazed"
- Brake discs that are uneven
- Brake pads and brake discs that are not run-in with each other
- Brake pads and brake discs that do not have 100% contact surface with each other
- Too small brake discs / brake pads in relation to the weight of the vehicle (creates a lot of heat)
- Master brake cylinder too small / piston area too large in brake caliper (long pedal travel)
- Too big master brake cylinder / small piston area in brake caliper (Short pedal travel / Dumb pedal)
- Small gear on brake pedal
- Air in brake system
- Leakage in brake system
Brake pads do not release from brake disc
- Brake pads stick/bindin the brake caliper
- The brake master cylinder is still depressed when the brake pedal is in its rest position
- Brake hose is old/damaged internally and does not release brake fluid back
- Brake hose is old/damaged internally and slowly releases brake fluid
What do the plastic washers in the brake bias bar do?
These ensure that the brake pedal and the bias bar lever do not rub against each other. But above all so they don't lock into each other.
How are throttle cables mounted in a pedal box?
Pedal boxes for the aftermarket/racing are universal and do not have a ready-made solution for throttle cable as it must fit many different installations. This way, you can decide how it should be mounted best.
What is a racing pedal box?
A racing pedal box is an essential component in a race car's setup. It allows the driver to easily and precisely control the brakes and throttle, allowing for maximum speed and accuracy on the track.
The main benefit of a racing pedal box is the inclusion of a bias bar, which allows the driver to adjust the brake balance between the front and rear wheels. This can be crucial in certain situations, such as when the car is understeering or oversteering, or when driving on different track conditions.
The bias bar also allows for fine-tuning of the brake balance to suit the driver's preference and style. In addition to the bias bar, a racing pedal box often includes adjustable pedals for a customizable driving experience.
Overall, a racing pedal box with a bias bar is an invaluable tool for any serious race car driver.
Metal shavings in master cylinder?
The push rod must be pressed straight in. If not, there will be an oblique load that affects internal gaskets negatively and in the worst case, the push rod plate can come into mechanical contact with the cylinder bore.