<VV> Re: FC pinion shaft gear & odometer

[Frank DuVal]

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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