In a message dated 97-03-26 21:55:36 EST, you write:
<< Specifically, what kind of MPH per 1000
RPM in 5th. >>
To find the MPH per 1000 RPM, Multiply your tire diameter in inches by 2.975,
and divide that by the rear end ratio times the 5th gear ratio.
2.975 X tire diameter
---------------------------------------
rear ratio X 5th ratio
Actually, this works for any gear ratio, just substitute 1st, 2nd, 3rd, 4th,
for 5th.
The 2.975 is what you get when you convert inches to feet to miles, and
minutes to hours, and factor in the value of pi.
To get your tire diameter, (2 X tire size X aspect ratio)/25.4 + wheel
diameter.
example: 2 X 195 X .70)/ 25.4 + 14 = 24.7" ( for a 195R70-14 tire)
Try it, it works!
Dan Masters,
Alcoa, TN
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