>I think the formula is:
>engine rpm times trans gear ratio divided by final gear ratio equals axle
>rpm
>circumference of tire equals distance per revolution
>distance per revolution times rpm equals distance per minute, convertible to
>feet per minute or miles per hour.
>I hope......
Formula is:
EngineSpeed = 336 x RoadSpeed x Ratios(s) / EffectiveTireDiameter
Or the version I use:
EngineSpeed = 168 x RoadSpeed x Ratios(s) / EffectiveTireRadius
Where
EngineSpeed is in rev/min
RoadSpeed is in miles/hour
Ratio(s) is the product of all applicable ratios (i.e. axle x transfer x
tranny..)
Effective Tire Radius is the measurement from the center of the axle
or hub to the ground.
later,
je
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