PeterO wrote: >Something that's puzzling me is that the potential energy >of a falling weight is directed vertically downwards and >the kinetic energy will not be converted to forward >movement unless it acts against a deflecting force as it >might in your invention. G'day, Just a postscript to my last post.There is another alternative in which the blade falls vertically into the water with no horizontal movement and its vertical movement is partially converted to a forward horizontal movement by some asymmetry in the blade. That would be a very odd paddle stroke though and doesn't sound like your intended mechanism. All the best, PeterO *************************************************************************** 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/ ***************************************************************************
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