Wheel hub for 550 12v dc motor

thingiverse

This is a wheel hub adapter for a 550 12v dc motor with gearbox that I used to replace the 6v motor in my kid's tricycle. The original 6v motor and battery were too slow and just not fun since it's faster to walk. The original plastic wheels are light, but very flimsy and were getting worn out in time, so I replaced them with 8 inch heavy duty solid rubber push cart wheels. The ride is much smoother and can handle speed bumps and tight turns. The 550v 12v motor I have is rated at 30,000rpm, so the weight of the 3 wheels slows the tricycle it down enough for a child to handle, but for adults it reaches a jogging pace.