My bet is that those speedometers read kilometers per hour on the needle, but miles on the odometer, which means that nothing under that KPH dial is different than the speedometers which we have with MPH and miles like Jesus did in the Bible. Carl
the dial face cleaned up reasonably well, i'm gonna use it as is, it will match the other aged instruments in my truck the photos attached are "cleaned.jpg" this is the result of 48 hr room temperature soak in Evaporust cleaner, then gently rinse with cold water and massage any particles off with fingers only not even a brush. then it air dried well for a couple days "coated.jpg" is after i applied a thin coat of Rustoleum satin clear to help stabilize the surface to lock everything in place and prevent new rust the back side will get a new coat of plain white
i'm gonna definitely check out the odometer later to compare to the 0-90 MPH cluster, i suspect it will be in miles but i'm curious now to see if i could find appropriate gears to turn it into a KPH odometer. gonna put a pin in that idea
Hy 2ManyTrucks, back when Canada metrified there were speedometer adapters being sold to make our speedometers read in Kilometers per hour rather than miles per hour. I bought a couple of them, but I only installed one, I have another brand new one around here somewhere.
Old British motorcycles, of which I own several, used Smiths spedo drives that came in Mile and metric flavors. Miles units resulted in 1000 revs per mile and metric were 1600 revs/mile. The standard for miles on US spedos is 1000 revs/mile. Speedo shops have or can get adapters that are used on trucks when axle ratios are changed. They come in many ratios. So there may be one for a metric conversion.
i turned it about 60-65 times to get the tenth to move one whole unit so that means it would be about 600-650 turns to get 1 unit increment on the odometer
if the truck cable from the transmission is indeed 1000 turns per mile, then it is also 621 turns per Km since this odo counts up 1 with 600-650 turns that means it will count 1 Km on the odo with a cable turn rate of 1000 turns per mile.