Bill wrote; The number represents the number of revolutions per mile of
the speedo
cable.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
John wrote !Bill, is that quite correct?... 1408 x 8.22' =
11573.76'.../5280 ft per mile = 2.19 miles, so my assumption was indeed
incorrect So it would appear that the speedo cable must turn 1 rev per
every 2 revs of the wheel. Since the speedo drive energy is derived from
friction, how is this ratio actually accomplished?
I think it is Magnetism, not friction that plays a role in the speedo
operation. The odometer is operated through a clockwork mechanism and
geneva wheels.
You neglected the influence of the differential ratio and the speedo
worm gear drive ratio in your calculations too.
Regards
Bill Leacock
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