A while ago, I’ve decided to build a powered Go Kart for my daughter. Always wanted one as a kid, but never got one, now was the time to fulfill my own dream.
Power comes from an old Elu/Dewalt cordless drill (originally NiCd) with external Li-Ion battery. At first, I’ve moved the “trigger” to the front, and actuated it with the pedal, but the extended leads killed the speed control immediately. Luckily had a spare from another drill, and decided to go another route. Now an old bicycle brake actuates the trigger.
To drive the wheel, I’ve 3d printed an Adapter, to be able to adapt a 64BCD bicycle chainring to the hub. On the drill-side, I’ve made an adapter out of some threaded rod, and POM material on the lathe. Added a bearing for additional support.
The thing runs at about 10km/h, and creates lots of fun.