The first PCB design will be made available very soon.
A toothed ring made from a ferrous metal is required for the speed sensor that interfaces to our chosen speedometer. This generates the pulses to measure the vehicle speed and will be bolted through to the reduction gearbox output flange and uses the same four M10 bolts on a 96mm PCD. The central hole is 44mm in diameter. This is designed to be laser cut from 5mm thick steel plate.