<VV> Re: FC pinion shaft gear & odometer
Frank DuVal
corvairduval at cox.net
Wed Sep 20 19:29:56 EDT 2006
If you want to have the odometer read correctly, then yes you need to
play with the gears.
But, if it just the speedometer, then renumber the dial.
As a driver of a Spyder since 1976, I have tried to have a working
speedometer, but spent most of the years driving by the tachometer.
Frank DuVal
Sethracer at aol.com wrote:
>
>In a message dated 9/20/2006 11:55:31 AM Pacific Daylight Time,
>dmonasterio at megared.net.mx writes:
>
>I am playing with my Rampside's speedometer to make it reading Km instead of
> miles (have several disassemblied GM speedos) but, as a starting point, I
>don't remember two things:
>1.- How many turns on the speedometer shaft for each mile ?
>2.- I remember that the drive gear pressed on the diff's pinion shaft has
>multiple threading but, don't remember if 3, 4 or 5 threads.
>This is for doing the necesary math in choosing gears.
>
>As always... thanks in advance for any input.
>
>Daniel Monasterio
>
>
>
>Hey Daniel - Another option? Corvair that were delivered in Europe used
>Metric Speedometers. I had a 200 KPH speedometer assembly for a 67 Monza that I
>picked up when I was in Belgium. You might inquire if any of the European
>residents has a metric early model speedometer or knows where one might be in a
>junkyard there. Of course, I doubt if the Spyders delivered there had anything
>special. You might have to go back to the standard gage pack. - By the way,
>there is at least one manufacturer that made an adapter unit that fits in the
>speedometer cable in-line, to correct the cable speed. I think Stewart-Warner
> made one. It was available in several different correction ratios. - Seth
>Emerson
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