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63' Bertram Possibly stuffed off SC???

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Old 01-18-2010, 02:06 PM
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Is the video avaliable on line somewhere? I hadnt seen a link to it.

Tommy you'd be surprised at how (dimensionally) thin most core skin laminates on performance boats are after bagging. I have an epoxy/baltek boat in my shot that has a paper thin outer skin on it but its strong as he!! because it was so well done. Working on these boats can be a challenge as just a touch with a grinder and you are at core already. Then again this schedule was made for a 6.5K pound boat and would not be a good layup for a big sportfish like this 630.

Dave i understand how a thin skin can survive on a light boat as the reflective forcefrom the water is in correlation with how heavy the boat is.Also there is molded in structural shapes and lines that reinforce these light areas.
A big broad concave area like the front of the Bertram needs a lot more than they were putting into it. Take a look back at Pauls site and see the bows are fully double framed than 1 inch planked than 1/4 inch ply and a layer of 1808 over that all built in a convex shape. Now compare that with some flimsy 3/4 inch foam with a 2 or 3 layers of biaxe on each side with no interior bracing with a convex shape to boot.

Dave you have to sign up on Yacht Forums to view it they just released the video today.

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Old 01-18-2010, 02:09 PM
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Dave what kind of core is in the Talon?
The Talon is 100% foam, hull sides(3/4") and running surface(2"), bagged with vinylester. I also have a couple Skaters at the moment and they are bagged epoxy/Baltek boats.

The Talon was pretty thin as well. I had to fix a pretty good hole in it from the 08 Key West Worlds.
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Old 01-18-2010, 02:11 PM
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Dave i understand how a thin skin can survive on a light boat as the reflective forcefrom the water is in correlation with how heavy the boat is.Also there is molded in structural shapes and lines that reinforce these light areas.
A big broad concave area like the front of the Bertram needs a lot more than they were putting into it. Take a look back at Pauls site and see the bows are fully double framed than 1 inch planked than 1/4 inch ply and a layer of 1808 over that all built in a convex shape. Now compare that with some flimsy 3/4 inch foam with a 2 or 3 layers of biaxe on each side with no interior bracing with a convex shape to boot.

Dave you have to sign up on Yacht Forums to view it they just relaesed the video today.
100% agreed, big boats need a big laminate

Thanks I will go check out YF. I'm on there as Gordon Freeman
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Old 01-18-2010, 02:14 PM
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Who is Gordon Freeman ?
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Old 01-18-2010, 02:17 PM
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Who is Gordon Freeman ?
lol its actually a character on a video game i use to play, Half-Life. I have no idea why i picked that as my screen name. I only use glassdave on boat sights i am active on and have something to contribute. I am just a lurker on YF.
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Old 01-18-2010, 02:29 PM
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The Talon is 100% foam, hull sides(3/4") and running surface(2"), bagged with vinylester. I also have a couple Skaters at the moment and they are bagged epoxy/Baltek boats.

The Talon was pretty thin as well. I had to fix a pretty good hole in it from the 08 Key West Worlds.

Even in the ester systems where the vacuum levels are kept low in wet bagging there is @30% compaction or better in the laminate. The Epoxies I start at 5 HG then ramp it up.

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Old 01-18-2010, 02:38 PM
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OHH that Gordon Freeman. The one on all the pornsites
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Old 01-18-2010, 02:55 PM
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actually YF is the only place i use that one. I'm really only on a hand full of sites anyway
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Old 01-18-2010, 03:02 PM
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Even in the ester systems where the vacuum levels are kept low in wet bagging there is @30% compaction or better in the laminate. The Epoxies I start at 5 HG then ramp it up.
hey Steve can you send me your email address again?

[email protected]

I want to send you a schematic of a method i use to repair these thin laminates and see if I'm heading in the right direction. Of course we have two years pounding on the repair i did to the Talon with no sign of failure of any kind. Most of the boats that go through my shop are traditional thick lay ups and I've had to work off the cuff to come up with a way to repair some of these ultra thin boats.

Thanks for your input
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Old 01-18-2010, 03:10 PM
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Did you see the video Dave . What do you think?

Hey Dave could you send that schematic to me also ? Always curious to see stuff like that my address [email protected]. Thanks.
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