Re: [ihc] Tire RPM @ 70 mph

To: Joel M Brodsky <jmbrodsky@xxxxxxxxxxxx>, ihc@xxxxxxxxxx
Subject: Re: [ihc] Tire RPM @ 70 mph
From: "James Lidberg" <jameslidberg@xxxxxxxxx>
Date: Mon, 15 Mar 2004 23:41:47 -0700
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Reply-to: "James Lidberg" <jameslidberg@xxxxxxxxx>
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Joel,

Thanks for your calculation.

Is this calculation for the wheel RPM?

The little rollers inside the wheel bearings are rotating much faster aren't they?

Like 10X to 30X wheel RPM?

Depending upon their diameter and race's diameter?

- Jim in Mesa

> Jim,
> just some rough numbers...
> 70 mph ~ 103 ft/sec
> 31" tire is  pi*D or 8.1 feet in circumference
> 
> 103/8.1 = 12 rev/sec
> 
> or 720 rev/min.
> 
> I think you're okay.
> 
> JoelB
> 
> 


**************
Jim In Mesa - James Lidberg
[email protected]
'79 Scout II/4X4/345/Edelbrock 1400/727/D20/3.07 open/PS/PB/4"Trailmaster
Copyright 2004 All rights reserved

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