Welcome to ModelEngineMaker !If you have problems registering or logging in, please use the contact menu option to request assistance.
Hi Terry, not a wacko idea at all. You are on the right track by suggesting a heavier rim on a smaller OD, as it’s the moment of inertia of the fly wheel, not it’s mass that is important. Mass located at a larger radius from the axis of rotation has a greater effect than mass close to the axis. The calculations are relatively simple and I can help with the formulae if required.
Looks a lot better after cleaning up on your own Lathe Per