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Re: Speedo Drive Ratios

To: ferguss@philly.infi.net
Subject: Re: Speedo Drive Ratios
From: Mike Causer <mikec@dial.drakken.com>
Date: Wed, 05 May 1999 15:03:58 +0100
Jeremy Fergusson wrote:
> 
> Actually, I am more concerned about the "mileometer" function. I entered a few
> road rallies last summer that required very precise tracking of miles 
>traveled.

Well you probably should not be relying on the stock speedo in that case.   For 
the two speedo gears you quoted with their corresponding axle ratios, if one is 
exactly correct the other must be almost 3% out.  Or maybe Ford split the 
difference and made them both 1.5% wrong, and are you running the original size 
tyres anyway??

OTOH you should be able to set a bicycle speedo/odo to read within 0.5%, which
is a lot better than you'll get from the normal car speedo.  If the regulations
allow it of course (if not then hide it somewhere ;-)

Mike



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