Re: [Paddlewise] Rudders/ frequency

From: Gerald Foodman <klagjf_at_worldnet.att.net>
Date: Sat, 28 Mar 1998 19:55:50 -0800
->
>This may be the case in boats that are difficult to control and have strong
>weathercocking tendencies. It is not the case in those boats that track
>well without need for a rudder. 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

Like Dan Hagen in the previous message in this thread I have a Solstice.
Mine is a GTS which indeed is a superb tracker without the rudder.  I have
no problems controlling direction in windy choppy water without the rudder.
The boat is remarkably insensitive to the wind and does not need a rudder.
Nevertheless, if I am just travelling, not playing, in these conditions, it
is much more relaxing and less tiring to deploy the rudder.  Any added drag
is more than compensated by the non-necessity for any course corrections
which would be necessitated more by the chop than the wind.  In flat
protected water, the added drag is noticeable and I generally raise the
rudder, even in strong wind.

How well do you think the tank tests represent boat behavior in wind and
chop, with uneven paddle strokes?

Jerry

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Received on Sat Mar 28 1998 - 20:03:55 PST

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