I failed to mention the Foil Simulator in my last post. you will fiond it at http://www.grc.nasa.gov/WWW/K-12/airplane/foil2.html The nice thing is that you can compare foil shapes, flat plates, and elliptical shapes. Lots of fun. Peter will find the pages on erroneous lift theories useful. :-) Turner wrote; >The canted GP stroke also generates lift on the exit in the push >phase of the canted stroke. Plotting the travel would be illuminating (Nick, did you not do something like this a while back?). I tried plotting it based on some film and it showed that any thrust generated by lift was acting at an angle to the desired thrust direction and, as a result, was efficient. Mind you, I have no idea if this "expert" really knew what he was doing. This is one of those areas where a good test device composed of recording load cells attached to the paddle, seat and foot pegs would be useful. Bruce Winterbon had some good ideas on this at one point but got involved in other things. I could not get anyone to donate the use of the equipment and lost interest as well since I didn't use a GP and saw no reason to devote time to proving my choice right or wrong since i like it just fine. Cheers John Winters *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************Received on Fri Dec 07 2007 - 10:35:25 PST
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