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Brake Calculation Sheet

This document contains calculations for determining the appropriate brake system components for a vehicle. It lists constants such as the vehicle's weight, center of gravity height, wheelbase, tire diameter, and brake system specifications. Calculations are shown for dynamic weight transfer during braking, torque at each axle, effective rotor size, circuit pressures, force at each master cylinder, and recommendations for front and rear master cylinder sizes.

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moridin2002
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1K views2 pages

Brake Calculation Sheet

This document contains calculations for determining the appropriate brake system components for a vehicle. It lists constants such as the vehicle's weight, center of gravity height, wheelbase, tire diameter, and brake system specifications. Calculations are shown for dynamic weight transfer during braking, torque at each axle, effective rotor size, circuit pressures, force at each master cylinder, and recommendations for front and rear master cylinder sizes.

Uploaded by

moridin2002
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLS, PDF, TXT or read online on Scribd
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Sheet1

Brake System Calculations


Constants
Total Mass of Vehicle (lbs) Front axle percentage Rear axle percentage Center of Gravity Height (in) Wheelbase (in) Tire Diameter (in) Front piston size (in) Front caliper, no. of pistons No. of front calipers Front rotor diameter (in) Front pad friction coefficient Front pad area (in^2) Front pad height (in) Rear caliper piston size (in) Rear caliper no. of pistons No. of rear calipers Rear rotor diameter (in) Rear pad friction coefficient Rear rotor height (in) Target max brake pedal effort (lbs) Brake pedal ratio Max braking decel (g's) Distance between master cylinders (in) 750 50 50 12 60 20.5 1.38 2 2 8.5 0.45 3.6 2 1.12 2 2 7.38 0.45 1 60 5.5 1.5 2.62

Calculations

Dynamic Weight Transfer Dynamic front weight Dynamic rear weight Torque at front wheels (ft-lbs) Torque at rear wheels (ft-lbs) Effective front rotor Front circuit pressure (psi) Rear circuit pressure (psi) Effective force at each master cylinder (with balance bar centered)

Recommended front master cylinder si Recommended rear master cylinder siz

Page 1

Sheet1

Dynamic Weight Transfer Dynamic front weight Dynamic rear weight

225 600 150 4612.5 1153.125 1054.29664 407.678338 165

Torque at front wheels (ft-lbs) Torque at rear wheels (ft-lbs) Effective front rotor Front circuit pressure (psi) Rear circuit pressure (psi)

Effective force at each master cylinder (lbs) with balance bar centered)

Recommended front master cylinder size Recommended rear master cylinder size

0.44639138 0.71785776

Page 2

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