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PostPosted: Thu Oct 08, 2015 8:40 pm 
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Site Rank - Deck Hand

Joined: Wed Sep 30, 2015 6:33 pm
Posts: 13
Location: Georgia
Hi guys,
I'm looking for a link to a good video showing how to do the epoxy delamination repair on soft spots on the top of Hobie hulls. I've found a lot about fiberglass work on the sides and bottoms of hulls, but only one really short video (about 45 seconds or so) on the top delamination epoxy repair and it leaves parts out. I'm particularly worried about how far to drill into the top of the hull. That's what I would like to see in a video, as well as the injection process in its entirety. I would appreciate any help, advice, or any first-hand tips someone's picked up when they made this repair.
Thanks so much!
Chuck


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PostPosted: Fri Oct 09, 2015 5:44 am 
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Joined: Mon May 09, 2005 10:25 am
Posts: 2900
Location: Jersey Shore
Drill into the hull no more than 1/4" using a power drill (use a piece of tape or a drill stop to mark the depth). The outer skin is maybe 1/16" thick. The foam is about 5/16" thick and the inner skin is less than 1/32" thick. It is very easy to punch all the way through the inner skin by accident. After you drill the holes with the power drill, remove the drill bit and carefully drill down to the inner skin by just placing the drill bit in the hole and spinning it with your fingers. You're just drilling through foam, so this is very easy to do.

sm


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PostPosted: Fri Oct 09, 2015 7:59 am 
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Joined: Sun Dec 23, 2007 1:20 pm
Posts: 253
Location: Clearwater, FL
This photo shows a cross-section of a hull and the thicknesses of the inner and outer fiberglass skins and foam.

Image

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Tim
82' H16
Sail # 88863
Clearwater, FL
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PostPosted: Fri Oct 09, 2015 8:09 am 
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Joined: Tue May 27, 2003 12:44 pm
Posts: 10630
Location: Oceanside, California
mmiller wrote:
Hulls - Soft or Delaminated hulls on older boats

Soft hulls are caused by the foam and fiberglass layers becoming seperated or delaminated. This can be caused by heat, repeated compression (walking on) or other factors related to materials and age. This is normally correctable. A soft area is a structural breakdown and should be corrected before sailing the boat. Soft areas in decks near or ahead of the forward cross bar can cause complete failure of the bow and must be repaired before sailing the boat.

If your Hobie has soft or "delaminated" hulls or deck areas, take a look at the following link:

Image

I did a search on Google to find information on the material that is excellent for this kind of repair "Git Rot" Flexible penetrating epoxy:

http://www.google.com/search?hl=en&ie=UTF-8&oe=UTF-8&q=Git+Rot

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Matt Miller
Director of Parts and Accessory Sales
Hobie Cat USA


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PostPosted: Fri Oct 09, 2015 8:30 am 
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Joined: Sun Dec 23, 2007 1:20 pm
Posts: 253
Location: Clearwater, FL
This video may help:

Fixing Hobie Cat Deck

http://www.youtube.com/watch?v=veTtdImAfOo

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Tim
82' H16
Sail # 88863
Clearwater, FL
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PostPosted: Sat Oct 10, 2015 3:24 am 
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Site Rank - Deck Hand

Joined: Wed Sep 30, 2015 6:33 pm
Posts: 13
Location: Georgia
Thanks guys! I appreciate all the help! Thanks sm for the actual thicknesses of the layers of the hull. That makes me feel a little more confident about how to drill. Thanks Tim H16 for the picture of the hull crosssection--that really gives me a better idea of what I'm dealing with. I couldn't get the video to play, but that's okay. I'll try to search under the title you listed. Also, thanks Matt for the diagrams about the repair. With these combined resources and the other information I've read, I'm ready to tackle the repair! Thanks again! I'll let y'all know how it turns out. It's been raining here a lot lately so I don't know how soon I'll get to do it--I hope really soon! I would like to get a sail or two in before it gets cold here.
Have a good one,
Chuck


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