Subject: Re: [baidarka] Aleutian Kayak Keel
From: keewatin (keewatin@warpmail.net)
Date: Sun Apr 20 2003 - 17:14:27 EDT
On Tue, 11 Mar 2003 19:45:48 -0800 (PST), "Jon Zerndt"
<jonmissy@ameritech.net> said:
> I'm in the process of building an Aleutian Kayak based
> on Wolfgang Brinck's fine book. I've run into a bit of
> a problem and I thought I'd ask for advice here.
>
> I have all the necessary ribs in place, and have
> carved the keel pieces, the bow piece, and the tail.
> I lashed the bow piece to the bow keel and that went
> just fine. I cut the scarfs in that end of the center
> keel and bow keel - and moved on to ttailpieceeel and
> tailpice assembly.
>
> This is where I noticed there was a problem. If that
> aft keel sits on the ribs, it cuts into the tail piece
> too much. In the book and in pictures of other
> baidarkas, the point at which the keel meets the tail
> appears to be fairly flat.
>
> So I began to check my measurements to see where I
> went astray. What I ended up doing, was to set up the
> 3 braces that were used to support the temporary
> stringer again so I could double-check. This must be
> where I erred. The aft support was off by 1 1/4" and
> the bow support was off by 7/8". I must have had them
> both set too high.
>
> So what now? I'm tempted to trim a bit off the tail to
> make the aft keel fit, but I'm afraid I'll spoil the
> kayak in doing so. The other alternative.... well you
> get the picture!
I meant to set this aside for a couple days and see if anyone answered,
but its been more like 30 days. Oops. Hopefully you got replies offlist
and your problem is solved by now. I would not trim the tail.
My answer would be to not worry about the front too much, if the problem
is only exhibited over a couple feet or less of boat. 7/8 inch will make
a difference but it wont be huge, IMO. Others may beg to differ. For the
rear, I would simply consider redoing the ribs over the area that is too
shallow. Or, if its ONLY depth and not breadth that is off, you could
simply install fairing blocks between ribs and keelson.
I'm not sure I have your problem correctly visualized though. You say you
had the braces too high (presumably with frame upside down), but that
would cause your keelson to run over the top edge of the tailfin (which
is actually the bottom), not "cut into it". In other words your hull
would be too deep. But I can only see braces being too low, ie ribs too
shallow, causing the problem as you describe it
Wayne
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