Date: Thu, 16 Jul 1998 11:33:43 -0500
From: "Wolfgang Brinck" <wolfgang.brinck@hksystems.com>
To: baidarka@lists.intelenet.net
Subject: Re: [baidarka] Gunwale height
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.
David Baranoski wrote:
>
> Greetings from a new list member!
> In it he says to "...stay away
> from some of the softer woods like white pine when choosing gunwale
> materials...if you do so with a softer wood...increase the height of the
> gunwales." Yikes! As I will be using the white pine, what do you
> recommend that I should increase the gunwale height to, over that of the
> original dimension of 1.750 inches, to maintain proper stiffness?
>
> Regards,
>
> David Baranoski
> Thorold, Ontario
> Canada