On Fri, 06 Jan 2006 12:21:16 GMT, "Steven P. McNicoll"
wrote in
. net::


"Larry Dighera" wrote in message
.. .

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.


I didn't think you could understand an explanation using those terms.


Why not?

Do you find the correct explanation difficult to comprehend?