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Wilwood Engineering - Caliper Technical Tips (Site not responding. Last check: 2007-11-06) |
 | | If the master cylinder piston is not allowed to fully retract when the brake pedal is not applied, the primary inside seal will not return past the small pressure relief hole (visible within the master cylinder reservoir on some master cylinders). |
 | | Pedal ratio, or mechanical leverage is the ratio calculated from the length from the pivot point of the pedal to the center of the foot pedal (A), divided by the length from the pivot point to the master cylinder pushrod (B). |
 | | With a 1 master cylinder stroke, a 100 pound push on the pedal, and the pedal having a 4:1 ratio, the force is 4 x 100 = 400 pounds, and the stroke is 4 x 1 = 4 inches. |
| wilwood.com /Products/005-PedalAssemblies/pages/techtip/pedaltech.asp (916 words) |