Re: Speedometer error

[Robert Ducker <bducker@domain.elided>]

Hello Graham,

It could be that you have a 3.7 diff, but with a speedometer driven gear in
the od unit for a 3.45. Take (3.45/3.70) times 20 equals 18.65 (assuming
I'm doing this right!)
I don't know for sure, maybe the od experts out there can say, but I think
you could get the right speedo gear for a 3.7 diff and replace it in the od
unit without too much trouble.
But... maybe there isn't a od speedo gear for a 3.7 diff and that's why
od's use a 3.45 diff, as someone recently suggested?
Anyway, I also seem to remember seeing an ad somewhere for a universal
adapter that can adjust speedos in any ratio you specify. It looked like a
small gearbox that installs inline with the speedo cable...

At 08:59 AM 2/27/98 +0000, K.G. Nicholson wrote:
>
>With all this discussion on diff ratios perhaps someone might be able to give
>a reason as to why my stag says it is 20 miles to work but my other cars say
>it is only 18. (it is only 18 by the way).  I thought it might have been the
>diff ratio that was wrong but a 1:3.45 would make it nearer 16. 
>
>
>Regards 
>
>Graham Nicholson
>For Tony Gee and Partners
>
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