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PostPosted: July 1st, 2009, 7:15 pm 
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one of my friendsis lookingat buying a used kevlar canoe bu it has cracks in the bow and stren, not sure what from or how big at this point. is it fixable? would it be a huge undertaking? the canoe is 16,6" and its 450.00 so it seems like a good deal even if it takes a hundered or so to repair, thanks


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PostPosted: July 1st, 2009, 8:00 pm 
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Location: Burns Lake, BC
If it is Kevlar, that would be a fair price for a fixer upper.
The boat should come in around 60-65lbs. This could be more or less depending on manufacturer and design.

A little bit of grinding and some glass repair, and you've got a new boat!

With fiberglass or epoxy, it shouldn't cost more than $100 to fix.

Good luck, Canoeheadted.


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PostPosted: July 1st, 2009, 10:11 pm 
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You state the boat is a 16'6"...
Would I be correct in assuming that the boat is a Langford?

If so, the cracks are likely in the gelcoat - NOT the Kevlar.
If these cracks exist in the gelcoat, they are really nothing to worry about: my Langford 16'6" Prospector has a bunch of them.

Langford has had a long standing problem of their gelcoats being too brittle and cracking upon impact.
At first, this really pissed me off, but after a few thousand kilometers on my boat, I've come to realize that it's purely an aesthetic issue - not structural.

My two cents...


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PostPosted: July 2nd, 2009, 7:46 am 
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From what I have been told before by a guy who makes and sells canoes, is that the thing with Kevlar is that it doesn't really crack, but can get "pulverized". Which means it gets mushy under the gelcoat. And would have to be cut out completely and replaced as a panel. And I got the impression this is not cheap and easy to do. So really check it out with "feeling her up" (ha, couldn't resist lol).

But as mentioned above, most visible cracks are esthetic and in the gelcoat only.

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PostPosted: July 2nd, 2009, 10:28 am 
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Location: calgary
If the ceacks are in the bow and stern then adding skid plates may be an easy fix


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PostPosted: July 2nd, 2009, 10:53 am 
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Kevlar is a fabric. The fabric is infused with resin. What breaks down is the resin. Either you have a fold or a soft spot. It can be torn completely less commonly(from a sharp object)

I have never heard of anyone cutting a piece out of a Kevlar canoe. It can be patched with more layers of glass or Kevlar (which is not very fun to cut) and resin is part of that process.

Its very hard to speculate sight unseen if the boat is fixable or not easily. Pictures would be a big help.

Not sure if the boat under question is skin coat or gel coat. Gel coat is not structural and unless the Kevlar is exposed may not need to be fixed. Its just an abrasion guard. Then if there is foam involved that is a whole nother animal and not under the category of "easy to fix"


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PostPosted: July 2nd, 2009, 12:25 pm 
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I've never heard of Kevlar pulverizing, but it can pull inside of its resin coat in a heavy impact and stretch along the bias. This makes the whole sandwich very weak in that area. Cutting out a piece and putting in a new one would would be a daunting task. I've never seen it done nor can I imagine how to do it without making a partial mold to lay the cloth over.

A factory could (conceivably) place the boat back in the original mold and do it from the inside, but even then, there would need to be substantial overlap in that case as well. It is orders of magnitude easier just to overlay the damage with new cloth.

Just about anything on a composite boat can be repaired, it's just a matter of how much weight you are comfortable adding to the boat.


BTW, Kevlar does degrade, quite badly in fact, in the presence of UV light. My browned up 4 year old skin-coat boat is a grim reminder of that for me.

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PostPosted: July 2nd, 2009, 5:21 pm 
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North Bay Canoe Nipissing Guide but doing a search all i can find is a 16 or a 17 i am working on getting some pics of the damage, its over an hour drive away so i cant go and take them myself


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PostPosted: July 5th, 2009, 10:18 pm 
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well my buddy got stiffed, the canoe was on kijiji, the guy was gone away for the night so couldnt send pics said he would when he got back, tried to contact him again and the guys says or sorry ya i sold it already :clap:
thanks for the replys though


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PostPosted: July 6th, 2009, 6:16 pm 
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Dr. Zoos, I think your buddy is better off looking for something not so battered.

And, it really is hard to talk repairs without pictures of the damage.

Incidentally, on a fine-ended canoe, the outer layers of the stems should be done in glass, not Kevlar. Kevlar is a stupid choice for areas where the major force vectors cause compression. Kevlar is mainly an inside reinforcement to prevent catastrophic propagation of damage.


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