sorry i forgot to add. i think the weight of the spinning assembly has some effect on torque curve, response, and horspower. not as large as displacement of course. why else chop the flywheel or lighten the crank in the old days. it made the whole assembly lighter and more responsive, but had a slightly neg effect on low end torque. now i am not going to produce any paper that says so. if i'm wrong that's ok, i have been wrong before.
