|
...the equation:
MPH = [ 60 / (G×A) ]×[ RPM / rpm ]
where:
MPH = vehicle speed, miles-per-hour.
RPM = engine speed, revolutions-per-minute.
rpm = tire speed, revolutions-per-mile [get from tire dealer]
60 = conversion constant, minutes-per-hour.
G = gear ratio of top gear, ie: 1.00:1 or 0.69:1, etc.
A = axle or final drive ratio, ie: 3.55:1 or 3.07:1, etc.
|