---------- Forwarded message ---------- From: Carey Parks <carey_at_jimparksfamily.com> Date: Mon, Aug 2, 2010 at 11:01 AM Subject: Re: [Paddlewise] RE: Electronic paddle - was bracing and power To: PeterO <rebyl_kayak_at_energysustained.com> Peter et al, I was stumbling around in the Android Marketplace looking for cool stuff for my phone (and I use that term "phone" loosely) and I ran across an app for rowing that displays and records the boat acceleration and also infers stroke rate, and some other things by using the "phone's" integrated GPS and three axis accelerometer. It's pretty good. Both the app and my device. http://nargila.org/trac/robostroke/wiki It of course does not integrate paddle dynamics, but to my mind they can be separated and still be useful. Maybe not optimal, but useful, and the cost is zero since I own the phone. The system (given boat, paddle, paddler, water) has an input, the paddlers stroke, and an output, the boat acceleration. I can think of two distinct scenarios where the optimal paddle stroke could be different. One is a sprint, when the goal is maximum boat speed, and the other is a cruise where the goal is maximum boat speed at a maximum heart rate, or a minimum heart rate for a given boat speed. I don't have the electronic paddle, but I do have a heart rate monitor and now this thingy to display and record boat acceleration. I'm going to go have a play with them both and see how the instant feedback on the effectiveness of a paddle stroke helps me adjust my stroke (GP) to get the most effect on the boat. Lots of things might come into play, like how much of the power developed by the paddle is absorbed by my body and not transmitted to the boat? I will try things like feet on and off the pegs, tight back band, different paddle grips. (I only have one paddle so I'm going to leave paddle length alone!!!) Best, Carey -- http://parkswhistles.com/ http://www.facebook.com/carey.parks http://twitter.com/LuthierCarey *************************************************************************** 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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