Quote:
Originally Posted by Michael Corsetto
This is likely your issue. I would not recommend placing wheels with axial or radial loads directly on the motor output shaft via an adapter. The motor output shaft is not designed to handle these sorts of loads. You should really be running a simple belt, gear or chain system to a separate shaft that has your shooter wheel on it and is well supported by the proper bearings/bushings.
I am guessing your set up is slowly but surely causing your motors to fail. I agree with others that brushes seem to be at least part of the failure mode.
Pictures would help too.
Best of luck!
-Mike
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The team we were with in 2013 damaged a Frisbee shooter motor by doing exactly what the OP was doing, though without the adapters. The side loads from only 3-4 shots, with high compression (and high side load), was all it took to damage the sleeve bearings at the "bottom" end of the motor.