Re: [Paddlewise] Heavy British Kayaks

From: Dan Hagen <dan_at_hagen.net>
Date: Sun, 04 Apr 1999 21:14:35 -0700
Matt Broze wrote:
> 
> ... A thinner deck is more likely to flex and
> if it flexes it may overstress some area where the flex is too great,
> causing stress cracks in the gelcoat or worse. Even a tough vacuum
> bagged Kevlar deck will get stress cracks in the gelcoat if it flexes
> too much to the outside (putting the gelcoat under tension where it 
> is folding). A thick heavy deck is a stiff deck even if built with
> inferior materials and methods ...

Granted, but aren't there better ways of stiffening the deck, such as
using light-weight core materials? I have a kevlar kayak with a
reasonably stiff (but light) deck. The stiffness comes from arches (made
of some sort of core material) that are glassed into the deck. I also
used to have an ultralight kevlar canoe with a very stiff foam-cored
floor. As with resin, some of these core materials don't add much
strength, but they do add stiffness without the weight penalty. 

Dan Hagen
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Received on Sun Apr 04 1999 - 21:16:29 PDT

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