Re: [Paddlewise] Rudders/ frequency

From: Bob Washburn <whiterabbit_at_iw.edwpub.com>
Date: Sat, 28 Mar 1998 21:09:21 -0600
For relevance, what percentage of a "good paddler's" energy goes into
maintaining direction?  It would seem to be over 10% for most paddlers
under most conditions.  

The test for the 10% could also have significant variance.    If the 10%
was measured with the  rudder dead center and the boat pulled straight, the
drag would be significantly different when being used to correct for
crosswind/current.

><clip> In fact, tank testing has shown that
>rudders add a much a ten percent to overall drag.  While this high figure
>maybe due to the rather poor design of most rudders it still is an
>indication of the  cons of a rudder.
>
>I think it is important to understand that not all boats weathercock badly
>or lack controllability and that not all boats require special skills to
>keep them on course. One must not assume that, because most of the boats
>one has paddled lack controllability that all boats lack controllability.
>
>Cheers,
>John Winters
>Redwing Designs
>Specialists in Human Powered Watercraft
>http://home.ican.net/~735769/
>
>
>
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                        ,,,
                      (o o)
==================oOO--(_)--OOo==========================
                  Bob Washburn
whiterabbit_at_iw.edwpub.com  or   rwashbu_at_siue.edu
"Are on the cutting edge or the lunatic fringe?"
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Received on Sat Mar 28 1998 - 19:10:25 PST

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