Have a general question about torque. I have a 102 inch diameter, ring shaped, flywheel that weighs 500 pounds. It is rotating at 25 RPMs. I know that the energy produced is 1304 joules, but you need to know how many Nm that equates to. Second question: this flywheel is placed in a direct-drive configuration with an arbor or shank of a generator. If the flywheel is producing 961ftlbs of torque, how much of that torque is being transfered to the 2" diameter cylinder that is turning the generator? See the picture for clarification. The bike tire would be my flywheel and the smaller PMG would be my generator.