Hi Glen,
This is reasonably accurate,
70 MPH = 4606 RPM
75 MPH = 4963 RPM
Hope this helps.
Paul
PAsgeirsson@juno.com
On Tue, 1 Feb 2000 19:23:57 -0800 (PST) grbyrns@ucdavis.edu (Glen Byrns)
writes:
>Fellow spridgeteers,
>
>I should be embarassed to ask since I know the proper formula, but I
>know
>one of you out there is a whiz who can compute this in your head as
>quickly
>as I can compute 'gear inches' for bicycles.
>I have a standard ribcase tranny, stock bugeye diff. (4.2?) and am
>running
>145 SR 13 tires with moderate wear. In fourth gear, at 70 MPH
>indicated on
>the speedo, I show almost exactly 5000 rpm.
>What is the actual speed? Are different speedo drive gears available
>to
>correct the reading?
> Many thanks, Glen Byrns
>
>PS. Math is what drove me from physics to biology.
>
http://dl.www.juno.com/get/tagj.
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