not sure about using a gearbox most tools use nylon or plastic gears. i have another motor that could take more
abuse. this ones 20v with a built in fan.
once i get the pulley system dialed in i wont be restricted to just one motor.
the one i have installed now gives me over 6volts just spinning it by hand should be interesting to see the max voltage at idol.
ill post a video on youtube.
YouTube - karmabike1911's Channel