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Old 10-03-2012, 15:25   #1
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Hello, New Ferro Boat Here

Hi All, We have a new (to us) 39' Ferro gaff cutter and with a little surfing came across this great forum. We are hoping to get some answers to I'm sure common issues with ferro boats. Last summer was our shakedown and now "Avalon" is on the hard waiting a few repairs. On the top of our list is to replace all the "plastic" marelon thruhulls and associated valves. I'm assuming the PO installed these to eliminate any electrolysis issues, but after snapping off two handles last summer we have no confidence. There must be some consensus on the correct way to install bronze fittings out there, looking forward to hearing from ferro boat owners. Click image for larger version

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Old 10-03-2012, 15:59   #2
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Re: Hello new ferro boat here

Stonefloat, (perfect name) Ferrocement boats are the "Rodney Dangerfield" when it comes to respect, but I love the idea. Nothing can give you more for less if you happen to buy the right ferro. So, what's the history of your boat?
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Old 10-03-2012, 16:19   #3
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Re: Hello, New Ferro Boat Here

Well, "Avalon's" hull was built by Samson marine design in Vancouver,Canada in 1974 then shipped to Seattle and fitted by 2 Shipwrights over the next 2 years. We (the first mate and I ) purchased off the original owner last summer. The boat is a C-Farrer II gaff cutter & a hoot to sail~~ we plan on cruising her in the near future, something that was intended by the PO but never realized
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Old 10-03-2012, 16:24   #4
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Re: Hello, New Ferro Boat Here

So, you have a professionally built, quality ferrocement boat! Those are the very ones that I was referring to that get the most for less!
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Old 10-03-2012, 16:26   #5
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Re: Hello, New Ferro Boat Here

yes they are pretty dodgy. epoxy mortar is good for skin fittings on ferro. hopefully he did not have any electrolysis issues.
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Old 15-03-2012, 08:49   #6
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Re: Hello, New Ferro Boat Here

Welcome aboard. And congrats on the boat. I have a samson C-Bird here on the east coast.
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Old 16-03-2012, 21:30   #7
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Re: Hello, New Ferro Boat Here

I built a Hartley RORC 32 too many years ago.

I can understand your concern if plastic valve handles are breaking off, but, before replacing them with bronze I'd consider the possibility of electrolysis occurring in the mesh, possibly the most disastrous thing that could happen to a ferro boat.

Are you sure that the valves are Marelon? If the boat was built in 1974 I'm not sure that Marelon was round then. Could they be very old PVC valves?

I'll admit that I used bronze when I built "Gindie" but that was all there was way back then.

I'm slowly replacing all the bronze valves on Boracay (steel) with survey rated plastic (Truedesign) and each haul out I see fewer problems.

I'd strongly recommend using quality plastic through hulls and valves.
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Old 16-03-2012, 22:42   #8
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Re: Hello, New Ferro Boat Here

Thanks for all the input on installing bronze thru hull on ferro boats. I'm still in the camp to "oversize" hole then refill with epoxy to isolate from hull , your thoughts ?
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Old 16-03-2012, 23:16   #9
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Re: Hello, New Ferro Boat Here

Quote:
Originally Posted by Stonefloat View Post
Thanks for all the input on installing bronze thru hull on ferro boats. I'm still in the camp to "oversize" hole then refill with epoxy to isolate from hull , your thoughts ?
+1 ,
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Old 17-03-2012, 00:50   #10
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Re: Hello, New Ferro Boat Here

Hello Stonefloat
I also have a proffesional built double epoxy ferro hull by Hemmant Boat Industries - 1986
I wish I had 20 cents for everytime someone said to me,,,mmm nice lines for a glass hull
Then the best thing in life, is that I burst their bubble and tell them OMG its a ferro
I agree with Boracay, I have allready done this,,,very important
Yes u are correct, ABSOLUTELY go one size over
This allows you to inspect the condition of the hull
Luv my ferro
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Old 17-03-2012, 00:51   #11
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Re: Hello, New Ferro Boat Here

Never had a Ferro boat yet, but the idea of enlargeing the hole and re-epoxying is a real workman like repair!! much better then useing plastic of any kind !! Ive seen a couple of Ferro boats I would have loved to have had ! Just my 2 cents
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Old 17-03-2012, 01:28   #12
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Re: Hello, New Ferro Boat Here

Hello GT1961 when you say you have already done this are you referring to using bronze with epoxy barrier (oversize hole) Or switched over to Marelon thanks for the input
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