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Auto Math Formulas
Displacement
= bore2 x stroke x .7854 x # of cylinders
RPM
= mph x axle ratio x 336 x transmission gear ratio / loaded tire diameter
MPH
= (rpm x 60) / (axle ratio x tire revolutions per mile)
Tire Revs Per Mile
= 10084 / loaded tire radius
Carburetor CFM Requirements
= displacement x redline rpm x volumetric efficiency (90%, or .9 for a good street car) / 3456
Coil Spring Rate
= (W x G) / (8 x N x D) where:
Skidpad performance:
g = (1.225 x R) / (T x 2) where:
If there any more formulas you'd like to see on this list, or any that you may already have and would like us to post, feel free to contact us.
Feedback and questions are always welcome, please click the "Contact" links if you'd like to leave some.Copyright © 2009 Bruce Johnson and Craig Watson





