Message-Id: <v03007805b37d7bf9f7c1@[204.60.11.32]>
In-Reply-To: <19990604011326.1221.rocketmail@web207.mail.yahoo.com>
Date: Fri, 4 Jun 1999 08:51:12 -0400
To: baidarka@lists.intelenet.net
From: Nick Schade <schade@guillemot-kayaks.com>
Subject: Re: baidarka Kayak stability calculations
Did you try this with some sort of knee or thigh brace so the "paddler"
could try to hold themselves in the "boat"?
>Some time ago, in attempt to understand the kayak stability thing, I
>built a contraption that had a board about 10" wide and 4' wide,
>resting, lengthwise, on a large diameter dowel, and that resting on a
>2X4 spacer to raise the assembly off the floor. The board also had a
>long handle extending from one side.
>
>Everyone in my family, and anyone else who came to my house while the
>experiment was running, was required to sit on the board with their
>feet up, then I tipped it slowly to one side until they were no longer
>able to ballance and fell over. I didn't keep any records, but as I
>recall, most people were able to stay on up to about 10 to 15 degrees
>(women did better than men), the point which obviously corresponds to
>the point where they were no longer able to keep their center of
>gravity over their Butt Contact Patch. That being the case, it's a
>little hard to see what difference it makes what kind of stability
>curves a kayak has at 25 or 30 degrees, except maybe as it affects
>rolling.
>
>In addition, the driver plainly constitutes moveable ballast in a
>kayak, and the cg, metacentric height, and just about everything else
>concerned with forces, moments, angular momentum, and the elections in
>South Africa changes with his or her movements.
>
>?????
>
>One of the most interesting phenomena observed during the previously
>mentioned experiment is that none of the subjects was surprised at
>being asked to participate. The implications are still being evaluated.
>
>_________________________________________________________
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Nick Schade
Guillemot Kayaks
10 Ash Swamp Rd
Glastonbury, CT 06033
(860) 659-8847
Schade@guillemot-kayaks.com
http://www.guillemot-kayaks.com/
>>>>"It's not just Art, It's a Craft!"<<<<