Yeah thanks. This has been a challenge. Which makes it worst is that this is a fixed axle go kart so the pickup would have to be mounted on the frame and rear pulling wheel. If this were a rotating axle, I could use a minibike speedometer.
Guys, Thanks for all the input. My grandson is old school and wants an analog speedometer that's why I was trying to adapt a bike or mini-bike speedometer to this Go Kart.