Wondering how much torque can be pushed through a single speed freewheel? I read somewhere around 200-300 ft-lbs. Thinking of building a motorized trike powered through a riding mower transaxle geared 2:1 overdrive through 2 chains to a standard freewheel on each of the rear wheels. Engine will likely be a 6.5hp to 8hp I'll pick up later on. Going to be a low budget winter project.