Originally Posted by ALC-GregH
I don't know who you're trying to fool here but I can tell you, what you say is totally not true. There is no way centrifugal force keeps them balanced. All that does is keep them straight out from center. It has nothing to do with the balance. I think there's a reason why nobody uses them.
From what I understand of physics (I'm certainly no expert), I agree that it is not possible for them to balance themselves by centrifugal force because the blade system is rigidly mounted to the spindle. If it were not a rigid mount, then it would be possible for the system to self balance by rotating around it's mass center axis. But that is not possible when connected to rigid shaft and bearing.