Our air motor has 2 cylinders and is a low rpm device. It therefore needs a flywheel to store enough torque to get the crankshaft past the dead spots at 10 degrees before and after top dead center and 10 degrees before and after bottom dead center. My question is how to calculate the torque available in a solid cylindrical flywheel in terms of its diameter, length, density, and RPM.
It depends on the design of the flywheel, basically mass at the outer rim where it is going faster has more effect. There are formula for simple solid disks, cyclinders etc. I can't get the formula writer to work but this link is here http://en.wikipedia.org/wiki/Flywheel
Thanks, that did it Thanks - you got me off the dime and I have my answer - is amazing what the squared term does to flywheel energy. We has a 60 pound flywheel on the cankshaft and it wasn't getting the job done. A 40 pound flywheel rotating at 20 revs/second gave us more torque than we need. Thanks again Ken Hoopes Chief Engineer HUE corp
It is! There are proposals to use flywheels as alternatives to diesel generators for backup power - a few tons of flywheel at 10,000rpm is a lot of energy!