I am starting my 80100 direct drive build and would like to test motor and ESC (especially the ESC) beforehand under roughly realistic conditions. In particular I want to apply some varying loads on the motor (without emptying my bathtub) and test different cooling options for the ESC and measure how effective they are. I am looking for a simple, cheap and dry solution.
I thought of spinning a metal disc with the motor and brake it with an old bicycle brake.
Other option would be an electrical generator, but I don’t have one.
Someone got any ideas?