-- Last Updated: Jul-19-13 3:39 PM EST --
Loaned my canoe out to friend and her paddling partner for a Quetico trip and when it came back the stern end cap was worn right through. I knew friend had shoulder problems (had rotator cuff and muscle repair a year ago but has another tear needing repair) and would have some difficulty with throwing a canoe. Didn't know her partner but was given the impression that he was strong and fine with proper throwing. Turned out that he also had a shoulder problem from having had rotator cuff repair previously. End result was lots of scraping of stern on rocks and erosion making surfaces during portaging. I don't want to leave the canoe that way so called place where we purchased it. Knew this canoe model hadn't been made in years but hoped I could find a replacement end cap. Owner told me he couldn't get a replacement and was not encouraging that I could find one that fit. Other models have wider end caps (shape of stern tip) so no luck using one from another model he said. He said I could try to repair it but offered me very little advice. I would like to try to repair it and thought fiberglass cloth and epoxy resin might work. Among all the stuff in the garage , I found several supplies I could try and wondered if anyone can offer some guidance. Two brands of epoxy: West Systems 105 expoxy resin with 305 hardener and two part Bondo from a fiberglass repair kit. Also two weights of glass: a light, much more drapable one and a thicker one. Darryl used the West Systems epoxy and the lighter glass to strength the blades on the canoe paddles he made. The heavier glass in the Bondo kit hasn't been used. So 1) opinions/experience of using epoxy glass for a repair and 2) would one be better to use than other? I was thinking it applying several layers would be needed (2 or 3 letting them dry in between). I've never done so would appreciate advice and words of caution from others who know about using this stuff.
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Is the end cap still in one piece|
Posted by: pblanc on Jul-19-13 6:21 PM (EST)
and what is it made of? If the cap is sufficiently intact to serve as a framework to lay 'glass on and is made of fiberglass or ABS, West System epoxy should bond to it. If the end cap is made of something like polyethylene or polypropylene it probably won't.
West systems G-Flex......|
Posted by: jackl on Jul-20-13 5:56 AM (EST)
will bond to most anything
find a way to show some photos here ....|
Posted by: pilotwingz on Jul-19-13 10:58 PM (EST)
Why vinylester resin? Harder to get, |
Posted by: ezwater on Jul-19-13 11:21 PM (EST)
doesn't last in the container, doesn't stick to *anything* as well as West epoxy.
Posted by: pblanc on Jul-20-13 7:13 AM (EST)
Vinylester resin usually has to be purchased in larger quantities and the catalyst is much more toxic. Epoxy bonds to boats made with vinylester resins just fine. I have used it for many boat repairs on vinylester boats.
Posted by: rpg51 on Jul-20-13 7:31 AM (EST)
I bought a gallon of west epoxy resin and a quantity of west system hardener (two actually, one fast one slow) approximately 20 years ago and I am still using it from time to time for boat repairs and the like and so far as I can tell it is still working perfectly. I have had seen no ill effects - except a little darker color. I would not use it to build a stripper but it is perfectly fine for repair work.
Yeah, I love the aged stuff. It looks |
Posted by: ezwater on Jul-20-13 4:28 PM (EST)
good for repairs on mahogany furniture.
Dog Paddle Canoe Works|
Posted by: kayamedic on Jul-20-13 8:29 AM (EST)
makes carbon fiber end caps for those not wishing to play with epoxy.
That was going to be my suggestion|
Posted by: clarion on Jul-20-13 10:00 AM (EST)
Or, he could wax the undamaged end |
Posted by: ezwater on Jul-20-13 4:31 PM (EST)
cap on the other end of the boat, and lay up a FG mold. Then he would wax the inside of the mold and lay up a new FG end cap. Color matching could be done by painting or by adding some West Graphite powder to the mix.
Posted by: puffingin on Jul-20-13 6:53 PM (EST)
Thats got some black in it too |
Posted by: onnopaddle on Jul-20-13 7:34 PM (EST)
Regular 5.7 ounce cloth though.
That is pretty much what I imagined|
Posted by: pblanc on Jul-20-13 7:53 PM (EST)
I would probably take the cap off by drilling of the heads of the four rivets using a drill and a fairly large bit, but this would require you to have a hand-held pop rivet gun and buy a few aluminum rivets to reattach it. I would find it easier to repair with the cap off, but you can leave it on if you wish.
A few additional points|
Posted by: mornstein on Jul-21-13 6:38 AM (EST)
Pblanc and several others have been spot on with their advice. I agree with using epoxy, especially if that's what you already have on hand.
another way ....|
Posted by: pilotwingz on Jul-21-13 1:24 PM (EST)