wrote:
> i mostly agree with the above but will point out " no longer have
> speedometers that work by attaching a cable to a vehicle wheel " //
> was only true for bicycles and motorcycles. Car speedometers have
> always read thru a cable that attaches to the transmission, the
> modern difference is the magnets and sensors, the originals were
> simply spun by a gear in the transmission.

Not always, VWs and some other imports used a cable to a front wheel for
the speedo drive. So did cars that used multi-speed rear axles as did
many early cars.

--
Steve W.