[SpudRider]

Thanks for starting the new thread on an important topic, Huck.

I am going to check my odometer against a measured mile to determine its accuracy. If both speedometer and odometer are 'optimistic,' we might be able to find a find a box which adjusts the digital input for both. If only the speedometer is 'optimistic,' we will need to find a way to calibrate the Siemens microprocessor.

My Trail Tech Vapor computer can be programmed for the circumference of the wheel. This input allows you to very accurately calibrate the speedometer on that computer. If we can figure out how to access the microprocessor in the Siemens speedometer, we might be able to calibrate it, also.