Originally Posted by
Loose rivets
I just can't get to grips with the concept of a weight. Counter-balance or not. My recollection of checking the vanes was that they stayed put to wherever you shoved them. Having any weight would make them subject to accelerative forces - the weight of the vane itself would be almost totally air-supported and while still affected by g, it would be minuscule compared to the pressure of the air.
Wouldn't the accelerative forces apply to the vane
and the counter balance about the pivot point? So possibly no rotation due to equal forces up/down around the pivot point. I also recall the vanes stay roughly where you put them. They feel fluid-damped.