JEM Watercraft
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A take-down canoe ? :o
http://www.jemwatercraft.com/forum/viewtopic.php?f=17&t=2625
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Author:  Bruno [ Fri Mar 13, 2009 5:38 pm ]
Post subject:  Re: A take-down canoe ? :o

Shawn, that's fine. Thanks ! I will open a topic when I build it.

Author:  Kayak Jack [ Thu Apr 09, 2009 7:13 pm ]
Post subject:  Re: A take-down canoe ? :o

A thought for the thwarts. Primary stress on them would be tension, not compression. Rig a stout line across between the gunnels, with a trucker's hitch in. Draw it snug and it will serve well at a mere couple of ounces.

Author:  Bruno [ Fri Apr 10, 2009 2:21 am ]
Post subject:  Re: A take-down canoe ? :o

Thanks for sharing your idea.

Intuitively I would have bet that the gunwales wanted to move closer to each other, hence the thwarts were compressed. :?

Author:  Jimmy W [ Sat Apr 11, 2009 2:26 am ]
Post subject:  Re: A take-down canoe ? :o

Kayak Jack wrote:
A thought for the thwarts. Primary stress on them would be tension, not compression. Rig a stout line across between the gunnels, with a trucker's hitch in. Draw it snug and it will serve well at a mere couple of ounces.

Jack, I realize that this boat will have the bulkheads to stiffen it, I also know that you did your canoe like that. But on a normal canoe or pirogue, I think that it is a bad idea to replace the thwart(s) with a rope. In any moving water, a boat could get pushed by the current into a solid object like a bridge piling, tree, or rock. This happens quite often especially with inexperienced paddlers and you will have compression forces on the hull. A solid thwart or two might prevent someone from getting pinned inside a collapsed boat wrapped around a piling. Water doesn't have to be moving all that fast to exert a lot of force. I don't think that the weight savings is worthwhile. I certainly wouldn't recommend it to people with unknown paddling abilities paddling in unknown places.
Jimmy

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