- Joined
- Jul 8, 2011
- Messages
- 2,668
Hi Knut,
What I have in mind here is that with greater impulses emanating from an engine with a lighter crankshaft there is greater elastic strain of all components down stream including the primary and secondary drive chains and belts, frame, wheel and tires. I am not focusing on torsional displacement but all strain. With each impulse or cycle there's a loss which results in heat. Taking it to a limit, think of a perfect and precise torque delivery system without impulse; it would induce one strain event while accelerating and one strain event while decelerating. As you point out, for our les than perfect Nortons, this is occurring around 100 times per second. Furthermore, as comnoz points out, the engine will vibrate more with a lighter flywheel and this must be constrained by the frame and suspension which "strains" and absorbs the motion and energy.
I hope I have responded to your question.
What I have in mind here is that with greater impulses emanating from an engine with a lighter crankshaft there is greater elastic strain of all components down stream including the primary and secondary drive chains and belts, frame, wheel and tires. I am not focusing on torsional displacement but all strain. With each impulse or cycle there's a loss which results in heat. Taking it to a limit, think of a perfect and precise torque delivery system without impulse; it would induce one strain event while accelerating and one strain event while decelerating. As you point out, for our les than perfect Nortons, this is occurring around 100 times per second. Furthermore, as comnoz points out, the engine will vibrate more with a lighter flywheel and this must be constrained by the frame and suspension which "strains" and absorbs the motion and energy.
I hope I have responded to your question.