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Location:
sunny coast, qld
Registered:
October 2002
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formula to work out speed?
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Wed, 21 April 2004 08:17
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i can't work out how to calculate the speed. If you know, tyre radius, diff ratio, rpm, and gearbox ratio, how do you work out the speed?
my tyre circumference is 2.05m, diff ratio is 4.63:1 and I have a A340E auto. Anyone know what the ratio is for that? I just want to know how many revs I am doing at 100km/h as I don't have a tacho at the moment.
thanks
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