On Fri, 06 Jan 2006 02:15:53 GMT, "Steven P. McNicoll"
wrote in
. net::


"Larry Dighera" wrote in message
.. .

So the placement of the pivot point is immaterial?


Well, where the pivot point is placed would determine
which side of the pivot point had the greater surface area.

I would think placement of the pivot point would determine the
arm/moment of the moveable vane. Either end could have greater surface
area than the other, but the end of the vane with greatest moment
(surface area * arm) will trail in the breeze.