Pedal Ratio Calculator |
Instructions: |
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This calculator is intended to calculate a lever ratio based on a desired system pressure and pressure on the lever. You can read more about system pressure and master cylinder selection on the Brake Tech page. For example, if a driver is strong enough to press with 100 lbs. of force on a hand brake, and 1200 psi. is specified as the system pressure, this calculator will give the ratio required for various master cylinder sizes. |
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Yellow boxes should be changed to suit your own application: |
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Enter the Desired hand lever force: | Enter the desired foot pedal force: |
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Master Cylinder Bore Size | Desired System Pressure | Force Required on Rod | Hand Lever Ratio | Pedal Lever Ratio |
0.75" | PSI | LBS | : 1 | : 1 |
0.875" | PSI | LBS | : 1 | : 1 |
1.00" | PSI | LBS | : 1 | : 1 |
1.125" | PSI | LBS | : 1 | : 1 |
" (custom) | PSI | LBS | : 1 | : 1 |
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