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Boat Forum / Building / June 2007canoe in 2 halves?
I understand that people have built Canadian style canoes that join in the centre. Do you know how the join is made as a friend wishes to build one but is not sure as to how he can get a watertight strong seal. Thanks Dave >I understand that people have built Canadian style canoes that join in the >centre. Do you know how the join is made as a friend wishes to build one >but is not sure as to how he can get a watertight strong seal. > Thanks > Dave Ive seen dinghys made in this way, and it wouldnt be unfeasable to do it with a canoe. I would think the material would have to be aluminum though, which is tough and specialised to work with. as long as you got a good true face on the join, all you would need is a good rubber gasket, and the right number of fasteners on the join to get a good tight seal. I suppose you could also make it out of wood and make a custom flange out of steel that would bolt to each half and then bolt together too, but unless you are very handy with an oxy torch and a welder you would be looking at some pretty big $ to have one made for you. Another alternative would be to have someone draw one up for you, then have it CNC plasma/oxy/waterjett cut, then weld it yourself or get someone to weld it for you. There are collapsable canoes out there for sale, some that you can actually carry in a suitcase. Paul Theroux travelled extensively around the south pacific with one, and they seem pretty sturdy, but not cheap. The trouble with making a canoe in two halves is that you'll probably have to overengineer it making it heavy and not really attractive looking.... Shaun >>I understand that people have built Canadian style canoes that join in the >>centre. Do you know how the join is made as a friend wishes to build one [quoted text clipped - 21 lines] > >Shaun You don't need to use metal. I have build several plywood dinghys that were joined in the center. I've got a three piece one sitting on the dock right now. Bruce in Bangkok (brucepaigeatgmaildotcom)  SignaturePosted via a free Usenet account from http://www.teranews.com I suppose you could make two water tight sections that then bolt together creating a bulkhead in the middle of the full canoe. Seems like it would add weight, but the issue of a water tight seal disappears. You could even un-bolt the sections and paddle away in two, 1/2 size canoes with square sterns ;-) . >I suppose you could make two water tight sections that then bolt >together creating a bulkhead in the middle of the full canoe. Seems >like it would add weight, but the issue of a water tight seal >disappears. You could even un-bolt the sections and paddle away in >two, 1/2 size canoes with square sterns ;-) . One could build a two part canoe that used some sort of a flange joint. Then as you say it would need to be hell for strong and even then the attachment to the skin on the boat would be a problem. The problem is that you would have to assemble the boat on dry land and then launch it. The two part boat with bulkheads at the joint has the advantage that (1) the join is much easier to build - the ones I have built had a 1/4" ply bulkhead with an additional 1/4" reinforcement about 3 inches wide at the bulkhead where the bolts fitted, and (2) you can assemble them in the water. As they were built as yacht tenders and were disassembled for storage on deck this was a distinct advantage Bruce in Bangkok (brucepaigeatgmaildotcom) SignaturePosted via a free Usenet account from http://www.teranews.com >I understand that people have built Canadian style canoes that join in >the centre. Do you know how the join is made as a friend wishes to >build one but is not sure as to how he can get a watertight strong seal. >Thanks >Dave While I have never seen a canoe joined in the center I have built several dinghys that were. The easy way to build them is to first build the hull. Then place two bulkheads spaced about 1/16 inch apart at the position you want the join to be. The bulkheads need to be nearly the full depth of the hull. Fit everything, drill all holes for connections, etc., and finally saw the hull in half between the bulkheads. Since the bulkheads are essentially the full depth of the hull no water enters through the joint. Usually four bolts are used to hold the boat together and these are made water tight with large washers and rubber gaskets. Bruce in Bangkok (brucepaigeatgmaildotcom) SignaturePosted via a free Usenet account from http://www.teranews.com Thanks to all of you who have certainly given us good information and food for thought. Cheers Dave > I understand that people have built Canadian style canoes that join in > the centre. Do you know how the join is made as a friend wishes to > build one but is not sure as to how he can get a watertight strong seal. > Thanks > Dave |
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