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How to fix my broken front wing

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andrewkiter
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How to fix my broken front wing

Postby andrewkiter » Mon Mar 02, 2015 9:18 pm

I broke the front wing of my hydrofoil the other day foiling, it was because I hit the sand bottom several times before.The crack is right by the bolts are. Do you think sanding it down to where the crack begins and then filling it with carbon layers?
Thanks and good winds :)
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revhed
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Re: How to fix my broken front wing

Postby revhed » Mon Mar 02, 2015 9:51 pm

Factory or home made?
Do you fly with strap,s?
"I hit the sand bottom several times" Why?
R H

andrewkiter
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Re: How to fix my broken front wing

Postby andrewkiter » Mon Mar 02, 2015 10:19 pm

Factory race wing. I ride straight onshore winds and really light so sometimes it's really hard to get some upwind ground since I'm fighting the kite to keep flying. By light I mean under 10 knots most of the time.

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gmb13
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Re: How to fix my broken front wing

Postby gmb13 » Mon Mar 02, 2015 11:48 pm

Sand it down until you have enough to build up 3 or 4 layers of 200g UD Carbon. Best if done in Vacuum. Lay it up like a leaf spring. Start with one long piece, then shorter and shorter.

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andrewkiter
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Re: How to fix my broken front wing

Postby andrewkiter » Tue Mar 03, 2015 12:13 am

gmb13 wrote:Sand it down until you have enough to build up 3 or 4 layers of 200g UD Carbon. Best if done in Vacuum. Lay it up like a leaf spring. Start with one long piece, then shorter and shorter.

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Thanks Gunnar, appreciate your advice.
I just took it to my surf shaper and told him exactly what you suggested.
Looking forward to get back foiling in a couple of days.

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Re: How to fix my broken front wing

Postby plummet » Tue Mar 03, 2015 12:59 am

Remember you need layers across the crack. I'd be using some 400gm double bias aswell as the uni to get torsional strength aswell.

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davesails7
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Re: How to fix my broken front wing

Postby davesails7 » Tue Mar 03, 2015 4:22 am

gmb13 wrote:Sand it down until you have enough to build up 3 or 4 layers of 200g UD Carbon. Best if done in Vacuum. Lay it up like a leaf spring. Start with one long piece, then shorter and shorter.

--
Gunnar
You mean the longest piece goes on last though right? That's usually the best way to make a repair, sand down further in the middle and taper to less sanding depth as you go out, then start with smaller pieces in the middle to longer pieces on the outside.

Rough sketch of what I'm talking about with black lines as the existing layers and the red lines as the repair pieces:
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repair.png
repair.png (1.48 KiB) Viewed 898 times


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