Off-Road Forums & Discussion Groups - View Single Post - Estimated Top Speed
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post #9 of (permalink) Old 07-02-2001, 03:56 AM
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Re: Estimated Top Speed

Here's what I use, work out your overall reduction ratio. ORR. = Gear ratio X Transfer ratio X Diff ratio.
Then use this.
MPH = Rpm X radius (Tyre)

ORR X 168.

Line is to divide lower into upper.

Alfie. Oh yeah answer is in Mph just X by 1.6

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