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Re: MPH vs. RPM

To: spitfires@autox.team.net
Subject: Re: MPH vs. RPM
From: Bradley D Richardson <bradrichardson@juno.com>
Date: Sat, 15 Dec 2001 13:30:02 -0800
Our Spit sits at about 3000 RPM when at 55 MPH.  

Brad

=================

On Sat, 15 Dec 2001 19:34:58 +0000 Michael Hargreave Mawson
<OC@46thFoot.com> writes:
> In article <TESEFCgJP5G8EwKj@hargreave-mawson.demon.co.uk>, Michael 
> Hargreave Mawson <OC@46thFoot.com> writes
> >In article <3.0.1.32.20011215081618.013a32f0@mailhub.exis.net>, 
> John T.
> >Blair <jblair@exis.net> writes
> 
> >>Measure the height of the tire - the diameter from the ground to 
> the top.
> >>The circumferance is: C= pi * D,  where pi = 3.14....
> >
> >I'm using the standard 155R13s, so I hope that my answer would be 
> the
> >same as that for anyone with standard tyres.
> 
> Bad form to follow up my own posting, I know, but I have just come 
> across a programme on-line which is supposed to calculate this 
> stuff. 
> According to this programme (which can be found at 
> http://pw1.netcom.com/~sgalaba/mph.htm#GearSpeed), we should be 
> getting 
> 55.97 mph at 3000 rpm in top (with 155/80R13 tyres).   I don't 
> believe 
> it!
> 
> Somebody, somewhere, must have the official Triumph figures, surely? 
> 
> Please?   Pretty please?
> 
> ATB
> -- 
> Mike
> Michael Hargreave Mawson, author of "Eyewitness in the Crimea"
> http://www.greenhillbooks.com/booksheets/eyewitness_in_the_crimea.html
> 
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