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post #1 of 24 Old 11-03-2013 Thread Starter
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Centerboard Specs

Does anyone know how heavy the centerboard is on our boats? I know I need to make it negatively buoyant but was wondering how much weight I need to put in it.
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post #2 of 24 Old 11-03-2013
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Re: Centerboard Specs

What boat do you have again?

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post #3 of 24 Old 11-03-2013
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Re: Centerboard Specs

I am guessing mine weights around 50lbs , I do have a piece broken off the bottom .

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Re: Centerboard Specs

Should have mentioned the boat, duh! It's a North American/Spirit 23 CB. Shoal keel with a centerboard. Hmm, I am wondering how to get 50 lbs of weight in there! It's not huge, but I was hoping to use cedar strips to glue something up and not sure how I would add that much weight.
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Re: Centerboard Specs

Mine is hollow, at least I think it is from tapping on it. It doesn't fall on its own, I have a rope tied to the bottom of the board.

What I was going to do was haul it out, drill a inch or so hole in the side at the top and if there isn't any foam in it, I'm going to pour some lead shot in it. Hoping to get at least 30 - 40 lbs. Then pour resin in it to keep it still. Glass the holes back up.

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post #6 of 24 Old 11-03-2013
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Re: Centerboard Specs

Please make sure you are dry before you pour ! lead and even a small droplet of water can get ugly. Dry the area out completely. With a heat gun or any other dry heat source, Let us know how it goes.
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post #7 of 24 Old 11-03-2013
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Re: Centerboard Specs

I don't follow... What does water and lead have to do with anything?

I was going to pour/spray acetone in it to clean it out for the resin to stick a little better so I imagine the water will be gone by then.

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Re: Centerboard Specs

Do you mean water as in if I'm pouring molten lead in there? I'm pouring lead shot, basically BBs or shotgun pellets. They will flow in there.

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post #9 of 24 Old 11-04-2013 Thread Starter
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Re: Centerboard Specs

Yeah, he was thinking you were going to melt the lead.
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post #10 of 24 Old 11-04-2013
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Re: Centerboard Specs

Quote:
Originally Posted by Southron Spirit View Post
I am guessing mine weights around 50lbs , I do have a piece broken off the bottom .
You're right about the weight if your talking about the lead in the bottom part only. The reason only the bottom has lead & the rest is fiber/foam is so that the board will remain down without being held and it can still swing up if it hits anything. I had to rebuild mine & when I did I epoxied & screwed a stainless rod & plate on the lower leading edge & bottom so I can test the rocks on the sea bed with no damage. I do that sometimes. It works great but makes you jump when you don't know the test is coming!
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