Quote:
Originally Posted by Snaps
Wrong... A pulley can still be unbalanced without the shape of the material being the cause. Think of the reason you get a wheel balanced when you change tyres - it's to make sure the whole wheel is balanced around the central axis. A poorly balanced wheel can shudder and vibrate while driving, it can also reduce the life of things like wheel bearings and suspension bushes as a result... However, due to the relatively small inertia of the pulley compared to the crank, and the fact that the pulley is probably not far out of balance in the first place, it shouldn't matter.
|
Let me amend my statement: people should stop talking about crank pulley balance. Nearly every time a person uses crank pulley and balance in the same sentence they are referring to a harmonic dampener, not to the actual balance around the central axis.