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Re: Speed eqation
Fri, 06 Aug 2004 12:00:12 -0500
Circumference of the circle times the RPM.
3.14 * 4.125" * RPM = speed in inches/minute
There are 63,360 inches in a mile so,
(60 * (3.14 * 4.125" * RPM))/63360 gives you the
speed in miles per hour.
At 400 RPM you're talking 5mph...
Somebody check my math!
--- Original Message ---
From: "Nick Barnes" <npbarnes-at-sympatico.ca>
Subject: Speed eqation
>Ok so here i am looking at my motors tring to figure
out how fast or =
>slow my tank will go ? If i know the drive
wheel size is 4 1/8 " =
>and the speed of my motor ( x ) rpm . What is the
formula to figure out =
>MPH? Do i need more info to determine mph ? Thanks.
>Nick "gotta work on my typing " Barnes