|
On my 97 Ranger.
rear tire diameter 24.75 inches
multiply by PI 3.1416
77.75 inches per revolution
divide by 12 to get feet
6.479 feet
divide 1 mile by 6.479 feet
815 revolutions per mile
.75 over drive 5th gear times the rear axle ratio
2.5875 overall final drive ratio in 5th.
815 revs per mile X 2.5875 revs of the engine per rev of the rear wheel.
2109 RPM at 60 MPH.
regards
Mech
|