Quote:
Originally Posted by 40 Deluxe
Food for thought while eating breakfast: A heavy flywheel has a dampening effect, stores kinetic energy, and smooths out firing impulses. The thing is, each firing impulse tends to briefly speed up the crankshaft but that heavy flywheel prevents this, so something has to give! What is the result? Torsional twist, or flex, of the crankshaft. So a heavy flywheel stresses the crank more than a light one. It's not just the weight, it's 4 cylinders each trying to speed up the crank while that big flywheel resists.
|
It not prevention of impulse,its a moderation of impulse,20 pounds of counter reaction against torque..the additional 'drag' has its greatest impact on the first revolution,but like a hit and miss engine,as it fires continuously the momentum generated by the mass of the flywheel dampen the impulse further.. basically Ill stipulate to initial crankshaft stress due to spinning the larger mass,but a counter acting reduction of stress as opposed to a lighter flywheel when running.