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 Post subject: Glassed in seat hangers?
PostPosted: March 7th, 2007, 10:14 pm 
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Joined: September 8th, 2006, 7:11 pm
Posts: 921
Location: winnipeg
So I recently replaced the gunwales on a canoe, using wood that was available (i.e. free). As such, the gunwales aren't at all typical, and are twice as deep, but half as wide as usual. Particularly, the inwale is not very thick - and won't support a bolt-through seat hanger.

This is what I was planning. Using 4 short lengths of wood and attaching them to the sides of the royalex canoe using fibreglass cloth and epoxy (the wood would hold the shape, the cloth would adhere to the side). Then bolting the seats to these mounts. I suspect I could even adjust the height by putting the seats on top of the mounts, or underneath.

Besides structural support (which, with 3 thwarts I think is OK), are there any obvious problems with this plan?

I considered just using saddles, but they are less comfortable, and cost more.


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 Post subject:
PostPosted: March 7th, 2007, 11:22 pm 
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Joined: August 27th, 2002, 7:00 pm
Posts: 2558
Location: Geraldton, Ontario Can
How thick are the inwales? I have used some quite thin bolts before, and they are still going strong....they were long skinny things taken out of electrical motors at the dump, just shy of 3/16....If your inwales are 1/2 inch,and hardwood, you should be able to hang. I'm not sure I would be fond of the option you described.


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 Post subject:
PostPosted: March 8th, 2007, 10:58 am 
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Joined: December 29th, 2002, 7:00 pm
Posts: 6209
Location: Bancroft, Ontario Canada
Maybe you could glue and fiberglass in extra wood to make the inwales thick enough to hold a bolt in that area, and stick with the tried and true traditional way, hang the seats from the inwales.

If the canoe sides are flexible, a strip of wood glued in could cause stress cracks to form at the edge because of the difference in flex characteristics... this may not be a problem in your canoe.

Another potential problem could be fiberglass not bonding strongly enough to the Royalex hull and peeling away gradually... that could also depend on how the seat mounts are designed.

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 Post subject:
PostPosted: March 8th, 2007, 11:45 am 
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Joined: March 6th, 2007, 8:06 am
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Location: Buffalo, Minnesota
Hello,
I agree with frozentripper. I think this is the best way. I have glassed seat supports to a canoe in the past and they eventually broke loose. There is just too much flex in the sidewalls which paces a lot of stress on these joints.
If I were you I would strongly consider adding a strip to the inside of the gunwales using epoxy glue to increase the material thickness and hanging your seats in the usual manner with long bolts.
Just my opinion.

Dick

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 Post subject: OK - what glue is best?
PostPosted: March 8th, 2007, 2:28 pm 
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Joined: September 8th, 2006, 7:11 pm
Posts: 921
Location: winnipeg
OK, so I will just shape a bit of wood to thicken the inwale.

Should I use gorrila glue, west system epoxy, or something else?

Thanks.


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 Post subject:
PostPosted: March 8th, 2007, 2:53 pm 
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Joined: March 6th, 2007, 8:06 am
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Location: Buffalo, Minnesota
Hello,

I like to use epoxy. If you have West Sytem epoxy I would use that.

Dick

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 Post subject: Thanks
PostPosted: March 8th, 2007, 8:40 pm 
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Joined: September 8th, 2006, 7:11 pm
Posts: 921
Location: winnipeg
Thank you all. One problem solved, and another avoided. Not bad for a moment's work.


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