Jeremy Fergusson wrote:
> I've recently changed the diff ratio in my Seven from 4.11 to 3.89. Now
> I need to make the speedo read correctly.
> The nylon speedometer drive gear for the 4.11 is blue with 25 teeth. If
> I go the other way, a drive for a 4.55 dif is white with 22 teeth. What
> do I need for correct reading with a 3.89 dif and where can I find one?
Easy! Now where's m'slide rule? Ah yes -- 25 times 4.11 divided by 3.89
-- that's 26.4 There you go, find a drive gear with 26.4 teeth.
Oh, BTW, I used my 1968 sliderule; possibly the '63 would have given a
different answer, being contemporary with the 105E.
No charge for this advice.....
Mike
|