Speedometer calibration for '56 KH

[Coolbreeze]

A couple of years ago, I lead my club on a road trip riding my '56 KHK. It ran great, but the speedometer was 'way off. I knew it was going faster than the indicated 42-44 mph, and - when we came to a stop - the other riders told me we were doing ~80mph!

My question is: What sort of ratio does this speedometer have? I wonder if, somehow, I have the wrong drive gears for the speedometer in the bike.

[vph-d]

There is only one drive gear for 52-72 models. However, there are two different drive gears inside the trans. One gear is listed for 52,53 and 57 and up. The 35363-54 gear is for 54-56.
Perhaps this is the cause of your problem.
VPH-D

[JosephJoe]

I had the same problem with the speedometer of my knucklehead.
The magnets were weak, they should be charged.
Perhaps this is the cause of your problem.


Joe

[Coolbreeze]

John Bordas in Colorado changed the magnets when he calibrated the speedometer. When I get the bike on the road in a few months, I'll know if that did the job.

BTW, the speedometer came back in the time that John projected. I appreciate that.