Re: [Paddlewise] PaddleWise V1 #646

Weight out on a bar or a torque wrench (essentially the same thing) will do
to measure stability. But that isn't secondary stability unless we agree on
a definition of at what angles of lean and/or what characteristics
constitute secondary stability. Even using the same person with each boat
could not be counted on to yield consistent results because that person
could lean differently (but way better than using different paddlers).
Matt Broze
http://www.marinerkayaks.com
-----Original Message-----
From: Kirk Olsen <kolsen_at_imagelan.com>
To: paddlewise_at_lists.intelenet.net <paddlewise_at_lists.intelenet.net>
Date: Thursday, August 12, 1999 9:08 AM
Subject: Re: [Paddlewise] PaddleWise V1 #646


>On Wed, 11 Aug 1999, Matt Broze wrote:
>
>> I have never heard of a measurement of secondary
>> stability but I would love to hear about it if someone else has.
>
>Does a weighted lever arm attached to a kayak meet your requirements?
>Adding weights to generate a stability curve?
>
>A few years ago they did this at a Maine Island Trails association
>meeting for an assortment of boats.  This seemed to be a reasonable
>interpretation of secondary stability.  The problem with their results
>was they used a different person in each boat instead of testing a boat
>with a dummy or sand bag for a paddler.
>
>The boat that took the most weight to capsize felt to me to have the best
>secondary stability, it was woodstrip kayak from Loon boatworks in Maine,
>with a generous amount of flare behind the cockpit.
>
>kirk
>
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