James Newtons Massmind wrote: >> This design doesn't work that way. It is a drag versus lift >> design. The right side is essentially a flat plate being >> pushed forwards by the wind. > > Yes, but I believe it COULD work that way. Not without a radical change that would no longer make it that basic concept. The basic concept is that the paddles rotate at half the speed of the turbine. The fact that they rotate (versus reciprocate) means they will move thru all possible angles to the wind at some point. It is also inherent to the design that the downwind leg (the right "quadrant" in my pictures) is a flat plate being driven directly downwind. ****************************************************************** Embed Inc, Littleton Massachusetts, (978) 742-9014. #1 PIC consultant in 2004 program year. http://www.embedinc.com/products -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist