"If your cable-driven speedometer is reading incorrect mph, in order to correct the problem,
you first need to know four things about your car:
1. Tire diameter
2. Rear end ratio
3. Transmission's drive-gear tooth-count
4. Speedometer's driven-gear tooth count "
koolconvertible said
Jul 2, 2020
A lot of good info! I just installed a GPS speedo where the clock was. Clocks never work so dont miss it.
seventy2plus2 said
Jul 2, 2020
I found something interesting with my Parisienne. When I put in the 4 speed and took it for a spin I found the odometer to be bang on. However, the speedo reads a bit high or low, I can't remember which.
I checked the odometer along Glenmore Trail ouside Calgary heading east. It's flat as a pancake, and there's a crossroad every mile (got to love the Western Canada grid roads) for about 10 miles.
https://www.chevyhardcore.com/tech-stories/other-tech/is-your-speedometer-inaccurate-here-are-a-few-tips-to-correct-it/
"If your cable-driven speedometer is reading incorrect mph, in order to correct the problem,
you first need to know four things about your car:
1. Tire diameter
2. Rear end ratio
3. Transmission's drive-gear tooth-count
4. Speedometer's driven-gear tooth count "
A lot of good info! I just installed a GPS speedo where the clock was. Clocks never work so dont miss it.
I checked the odometer along Glenmore Trail ouside Calgary heading east. It's flat as a pancake, and there's a crossroad every mile (got to love the Western Canada grid roads) for about 10 miles.