At 01:52 PM 1/17/00 +1300, you wrote: >[DL] >>I also think a wooden boat should be >>fairly stiff, as stated before. I can't buy into Alex's "lively" kayak >>philosophy. > >Semantics - I mean livley as in bouncing on the sea, not the hull flexing. > >>The other question I was asked relates to the procedure for actually laying >>up the fiberglass on the wood, and what cloth to use - 4 or 6 ounce. > >I don't glass the surface of the wood, just the joins. Saves all that extra >weight of glass and resin plus all the extra work. A 3mm hull is stiffer >than my glass boat (which isn't all that light) and most I build are 4 mm ply. > >Alex Alex, et al: The "lively" thing is a bit subjective admittedly, as is apparently the definition too. As far as 3mm or 4mm ply hull, yes, it is fairly tuff stuff if you go with the marine grade version without voids and seal it well with a finish - and no extra weight. But, I have seen punctured plywood, and it is not a pretty sight. I'm far too clumsy not too glass my ply hull when I finally build. I would also think that glassing the outside as a minimum would give the hull a lot more wearability for routine up and down beach dragging. I also think that glassing inside and also outside the hull must bring about unequivocal and multitudinous levels of superior strength to a hull, and not just because of a thicker rendition of the hull. I would think a piece of plywood with a layer of glass on each side must be incredibly strong and rigid due to the fact that if flex pressure is brought to bear on the plywood, the glass on one side prevents the glass on the other side from elongating or shortening. This must be even more true for curved surfaces with a cedar-strip built boat. My terminology needs some help here, but surely this is the reason glassed wooden boats have such a strong reputation for being strong. Enjoying the conversation, BC'in Ya Doug lloyd *************************************************************************** PaddleWise Paddling Mailing List - All postings copyright the author and not to be reproduced outside PaddleWise without author's permission Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************Received on Mon Jan 17 2000 - 00:49:57 PST
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