Peterborough Lock #21 http://www.cruising.ca/trent/docs/L-21.html -----Original Message----- I had a friend who, some years ago, did a trip along the Trent-Severn Canal between Lake Simcoe & Ottawa, up in Canada. Spectacular slides were shown, including a lock somewhere in that chain that consisted of two counterbalanced troughs. I don't remember the details now but somehow an 18 inch height difference was created in one and the other was lifted upward by that extra weight, so the entire structure powered itself... Joe P. -----Original Message----- *************************************************************************** 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 Wed Apr 16 2008 - 14:53:53 PDT
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