Table of Contents
What does pedal ratio mean?
Definition & Description. Pedal ratio is an important but often overlooked part of your braking system. It tells you how the force you apply to the pedal is multiplied and transferred to the Master Cylinder. It also affects how far the pedal travels.
What is master cylinder ratio?
The ratio between the caliper and master cylinder is a function of the net effective caliper piston bore area divided by the bore area of the master cylinder. To compare these ratios and do the calculation, you must start with the total piston area of the pistons in one side of one caliper.
How is master cylinder ratio calculated?
To determine the correct pedal ratio you would divide the caliper piston area, which is 5.94 in², by the master cylinder area of 0.79 in², which equals 7.52. This would mean we would need an effective pedal ratio of 7.52:1 for optimal performance with a 1-inch bore master cylinder.
How do I change my pedal ratio?
In order to increase the brake pedal ratio, a new hole must be drilled in the pedal arm. To avoid a hard angle on the master cylinder pushrod, the master cylinder placement must change.
What is the function of the brake pedal?
The brake pedal is located on the floor to the left of the accelerator. When pressed, it applies the brakes, causing the vehicle to slow down and/or stop. You must use your right foot (with your heel on ground) to exert force on the pedal to cause the brakes to engage.
How do you increase brake pedal ratio?
What do you mean by braking ratio?
Braking ratio is defined as the ratio of braking force against a car’s wheels to the car’s weight (Ref. The empty braking ratio is defined as the braking force divided by the car’s light weight.
What is a good pedal to pedal ratio for power brakes?
As a general rule, your pedal ratio should not exceed 6:1 for manual brakes with a 1” bore master cylinder and 4:1 for power brakes with a 1-1/8” bore master.
What is pedpedal ratio?
Pedal ratio (brake or any other pedal) is the lever ratio or the measure of Mechanical advantage provided by the pedal. Please refer the picture below for how it is calculated… (Image source: Your One Stop Brake Shop!) Thanks for A2A.
What is the biggest factor that affects pedal effort?
Even with the correct master cylinder, the brake pedal ratio is the biggest factor in pedal effort. Pedal ratio difference in length between the pivot (fulcrum) of the pedal to the pushrod hole (Y) and the fulcrum to the center of the brake pedal (X).
What is the ratio of pedal to pushrod?
Pedal ratio difference in length between the pivot (fulcrum) of the pedal to the pushrod hole (Y) and the fulcrum to the center of the brake pedal (X). A power system should have a ratio between 4 and 5:1, where a manual system should be between 5 and 7:1.