Date: Thu, 16 Jul 1998 13:56:10 -0400 (EDT)
From: David Baranoski <dbaranos@npiec.on.ca>
To: baidarka@lists.intelenet.net
Subject: Re: [baidarka] Gunwale height
In-Reply-To: <35AE2B67.3AF8562D@hksystems.com>
On Thu, 16 Jul 1998, Wolfgang Brinck wrote:
> I have built baidarkas using white pine for gunwales (1.75") and none of
> them has broken, but I think white pine is less elastic than some other
> woods and in time can take a set or warp more easily than stiffer more
> elastic lumber species.
>
> An extra quarter inch (2" gunwale) should be sufficient since stiffness
> goes up with the cube of the height - if you do the math, you will find
> that adding a quarter inch will increase stiffness by 50%, adding 1/8th
> inch will increase stiffness by 22%, so have at it.
>
Wolfgang,
I'll go ahead with using 2 inches for the gunwales. Lake Ontario can get
up there sometimes, and the white pine/stiffness question hit my paranoia
button. I'll sleep better at night now. I think I'll stay away from the
archives for a while...just sourced a local supplier of #10 canvas duck,
and I don't want to see that you've been advocating nylon :)
Thanks for the reply; and I'll apologize for getting your book a little
dog-eared.
David Baranoski
Thorold, Ontario
Canada