Date: Wed, 1 Mar 1995 14:52:01 -0500
Message-Id: <199503011952.OAA23118@postbox.acs.ohio-state.edu>
To: baidarka@imagelan.com
From: hazel.2@postbox.acs.ohio-state.edu (Paul Hazel)
Subject: Re: removable baidarka skins (was rib bending)
(stuff deleted)
previously someone (Kirk, Bill, Paul ?)wrote
>
>Where on the boat would you have the lacings? Stern, entire deck, between
>cockpits.
>
For a single hatch, I would lace from the cockpit to the stern, for
multi-hatch designs, the area between the hatches might need to be included.
(stuff deleted)
>Another area that could be important is how the ends of the opening
>come together. It would be a shame to have a design that was water
>tight for the length of the seam but open on the ends.
>
>> picture:
>>
>> ________________ _ _ __________________________
>> ___||_| |_||_____
>> |___________ |
>> _****_______|
>>
>> || lacing holes that would pull skin tight using appropriate
>> material (???)
>> ***** velcro possibly two overlaps.
>>
>> I put this idea forward as a contribution from hazel.2. Any feedback on
>> pluses and minuses?
>>
Actually it has occured to me that this seam wouldn't have to be any
different from any other deck seam as far as finishing and waterproofing - I
figure it could be sewn shut and doped like the rest of the skin.
Imagine this: From the bow to the first hatch would be cut and sewn to fit
as in normal construction. The skin from the hatch on back would be cut and
sewn oversize with the excess folded under (the 'tongue'). The purpose of
the lacing is to provide the fit only, nothing else should be needed here
for waterproofing - as mentioned above the seam is sewn and coated. The
purpose of the oversize skin is to allow the frame to be slid out from the
stern when the lacing is released. (Kirk, I think you mentioned something
like this previously.)
I think that Bill's suggestion of using a dry bag type of seal would then be
perfect for sealing the stern opening. Aside from the hatch opening(s) this
would be the only part of the skin that has an opening needing a seal of
some type. And this opening would not have to be any larger than the maximum
circumference of the boat - be sure to use the circumference that includes
the hatch combing if it isn't removeable.
Potential problem: during beach launches the bottom of the stern is going to
drag through some really abrasive stuff - how are we going to protect the
seam closure?
Design dilemma: How are we going to attach a rudder over this seam closure?
(I know , I said the "R" word, but they can serve a purpose.)
Thanks for the great responses!
Paul Hazel
hazel.2@osu.edu