Polulu Wheel 90*10 - Step & OBJ

thingiverse

I thought I had this thing down pat for my 25D metal gearmotor motor. But then I lost either the wheel or the mounting to the motor. Easy fix, actually. Just print normally and push it into the motor - there's a tiny part that gives way as you do so, which ensures the motor won't come loose. If you want to modify this for when you don't have the track, just think about how you can make it work without one.