Thread: Top Speed
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Old 08-10-2011, 12:39 PM
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biknut biknut is offline
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Join Date: Sep 2010
Location: Dallas
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Default Re: Top Speed

Originally Posted by Dave31 View Post
I will be hooking up a tach here soon, been curious myself what rpm I am turning.
It's easier to do it on paper, so to speak. All you need to do is measure the tire circumference. I use this website to do the calculation. The first link will give you the ratio, and the second link, the mph to rpm

Gear Ratios

Calculate MPH from RPMs
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