Math and Equations
Yes, kids, algebra is good for something. Here are some real-world examples.
RPM = V / D x GR x 334.2
Where:
V = vehicle speed in mph
D = effective tire diameter
GR = gear ratio (e.g., for my truck, 4.10 rear x .70 overdrive = 2.87)
Related Sites:
http://www.mortec.com/engmath.htm
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