[T3] Speedometer/Odometer ratio?

[jadney at vwtype3.org (Jim Adney)]

On 9 Feb 2012 at 11:03, Brian Fye wrote:

> i would expect that to mean their version of a 'final drive' ratio.  Could
> very much be that for every revolution of the wheel, you get .80 or .82
> turns of the final gear in the speedo.

That won't be it, because the speedo part is direct drive, no 
reduction. I don't know what the odometer reduction is, but it's 
huge. 

This is the case in all VDO speedometers. The speedo is calibrated by 
adjusting the strength of a magnet, and the odometer is calibrated by 
picking the right reduction gear ratio.


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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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