Join Date: Sep 2010
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Well I managed to get over to PYI's booth at the Miami Boat Show on Monday and lo and behold they had an actual Eco Wind prop on display. Just from looking at it, it is solidly built. The "spring" is interesting it's (be forewarned, this is a non-engineer's description) a spring material ring with slits cut in it. RPM's, water pressure, torque apparently compress the ring which in turn changes the pitch. I too am befuddled by the physical process, which was why I started this tread in the first place to see if anyone had any on hand experience. So far the answer to that (at least on Sail Net) is no. The PYI rep told me that 3 dozen of these props had been sold so far. He also told me that the 1.5 inch shaft version is in testing right now with plans for it to be available for sail starting in June. The price for the 1.5 by the way will be closer to $7,200 not the $5,600 for the smaller shaft.
I also got to look at the VariProfile 4 blade prop, which was a sweet little package, but doesn't portend to really increase efficiency or power motoring forward, which was what I was looking for primarily.
So now I am totally confused and have decided to leave the fixed three on for the time being.