Re: [Paddlewise] RE:: Boat Strength and Weight

From: Michael Daly <michaeldaly_at_home.com>
Date: Thu, 12 Oct 2000 20:48:16 -0400
From: "Nick Schade" <schade_at_guillemot-kayaks.com>

> Unfortunately, this system does not strike everyone as scientific 
> enough. The grad student (Sam Mcfadden) wants to put some strain 
> gages on a boat and go paddling. I think we might learn something 
> interesting. Will he learn how strong is "strong enough". At best, 
> only what is strong enough for the conditions he paddled in. But that 
> might be interesting. He will also see where the stresses are in the 
> boat. And we might be able to draw conclusion about other conditions 
> by extension.

When in university, studying structural engineering, I thought a lot 
about optimizing to the hilt.  Then I learned that the structure in 
a building represents about 20% of the total cost.  Saving 10% on
the structure saves 2% on the building - less than the margin for
cost overruns due to...  Plus you expose yourself to extra lawsuits
for adding risk.  I gave up the idea.

Optimizing a kayak is nothing compared to the several hundred pounds 
a fully loaded touring kayak weighs. Racers, of course, have other 
objectives.

It's also interesting that some say "this kayak is weak - it flexes
too much!" while others say "My skin-on-frame is flexible - that's 
why it's strong!"

Mike.

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Received on Thu Oct 12 2000 - 17:51:21 PDT

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