Where:
168 = Factor
RPM = Revolutions per minute of engine
r = Rolling radius of loaded driving tyre in inches
R = Overall gear reduction including both axle and transmission
MPH = Vehicle speed in miles per hour
Example:
Find out overall gear reduction of a vehicle where the motor speed is
1680 RPM, the rolling radius of loaded driving tyre is 15 inches and the
MPH is 15.
Where:
2651.51 = Factor
RPM = Revolutions per minute of engine
r = Rolling radius of loaded driving tyre in millimetres
R = Overall gear reduction including both axle and transmission
KPH = Vehicle speed in kilometres per hour
Example:
Find out overall gear reduction of a vehicle where the motor speed is
1680 RPM, the rolling radius of loaded driving tyre is 381mm and the KPH
is 24.
