Deformation in a Kevlar hull

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sbroam
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Deformation in a Kevlar hull

Post by sbroam » Fri Nov 06, 2015 7:03 pm

I've got this Kevlar Explorer with some deformations in the hull. The material is stiff and not deformed inside (airex), indicating the foam is crushed in those spots. Any fixing it?

I think it does affect handling somewhat - on flat water, it does pull one way more than another. It's not overly distracting and we can still make the boat fly, but...
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ezwater
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Re: Deformation in a Kevlar hull

Post by ezwater » Fri Nov 06, 2015 10:40 pm

The cost of a hull with a foam layer, contacting obstacles. Don't think you can correct when stiff foam was used. Same thing happens to the deck on my slalom boat, which is a Kevlar sandwich.

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Re: Deformation in a Kevlar hull

Post by sbroam » Sat Nov 07, 2015 11:34 am

From the condition of the hull, I suspect this boat hasn't hit many rocks ever (none at my hands) - no scratches or gouges. Likely had things stacked on it or was stored sitting flat on the ground (but clean). Oh, well.

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Re: Deformation in a Kevlar hull

Post by Peter K. » Sat Nov 07, 2015 1:36 pm

My son and I fixed a similarly deformed Kevlar boat which had been damaged by having been stored on its side by placing the boat on a sandy beach, pouring hot water on the inside and the weighting the ding with a sandbag from the inside. Problem solved.

(PS. It wasn't us that stored the boat improperly. And we got it at a great price because of the ding in the hull.)

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Re: Deformation in a Kevlar hull

Post by kaz » Sat Nov 07, 2015 2:05 pm

Try gently waving a heat gun at it. You'll know in a couple minutes whether or not the dent will come out. Just a suggestion.
Keep in mind, if it doesn't work,and makes it worse, I'm not responsible. ;)
JKaz......

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sbroam
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Re: Deformation in a Kevlar hull

Post by sbroam » Sat Nov 07, 2015 6:50 pm

Peter K - there is no deformation on the inside - it's outer layer deflected into the foam layer.

Kaz - I'll try that. Cautiously. I thought our SC summer would have done it spontaneously by now :-) [BTW, that Patriot paddles sweetly, especially now that I have a good kneeling thwart in the right place and some foam glued down.]

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Re: Deformation in a Kevlar hull

Post by JimW » Sun Nov 08, 2015 10:24 pm

I also got the heat gun tip for removing some gouges on the bottom of my slalom boat yesterday (direct from the supplier) - it looks as though the skin is still intact (some gel is going to chip for sure) and just the core has compressed.

Worth noting that the tip was specific to that make of boat, there are a lot of different core materials so it may not work for you, but must be worth a try.

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Re: Deformation in a Kevlar hull

Post by sbroam » Wed Nov 18, 2015 7:47 pm

It's definitely something to try - going at it gradually should be low risk and certainly less invasive than the idea I had - drill, compressed air, and fill with Gorilla Glue :-P

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Re: Deformation in a Kevlar hull

Post by JimW » Fri Nov 20, 2015 12:15 am

The heat gun trick worked on the dents in my iScream, just need to do some gel coat repairs now.

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