GearBox for Battlebot (sumobot)

Reduce high speed from the motor (DC 12V: 33000 rpm).
Compatible Models: 540,550,545.
Reduction aprox.: 1:44
Torque With DC Motor 545RH: 8.44 kg.cm
It was printed with PLA around 6 hours.
Test :
https://www.youtube.com/watch?v=ZphVYt-6NmY
A real Sumobot with this Gearbox:
https://www.youtube.com/watch?v=4CbK0LPt3iE

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