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Rigging update and replacement?

3137 Views 25 Replies 9 Participants Last post by ccriders, Mar 15, 2015

UnionPacific

Discussion Starter · Mar 9, 2015

Our boat currently has thru bolted chainplates.

I was wondering If I should switch these out for chainplates that go thru the deck? The plates for the main sidestays are raised slightly, telling me I am putting upward force on the deck itself. I understand this is incorrect.
I have two options.
One is to install turnbuckles below deck, between the plates that attach to the inside of the hull, and the deck plate.
Two is to swap out the deck attachment for thru deck rig plates.
Opinions?

I was about to replace all the bolts when I gave this idea some thought.
Maybe just swap out the two on the main sidestays?

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aeventyr60

· #4 · Mar 9, 2015

Possible wet core in the deck, causing the plates to pull up. Looking at your teak deck, I suspect water intrusion into the core, making the core soft and gooey. Some surgery is going to be required. Probably need to pull up some deck planks and open up the fiberglass to see what is going on down there. Early signs of a looming critical issue. Take care now before you go bounding across the main

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aeventyr60

· #8 · Mar 9, 2015

How was the core inspected? If all true as you say, then other causes for the bulging may be? Think there is also delamination between the core material, usually end grain sawn 2 x 2 squares of wood, and the fiberglass deck strata on either side of the core material. This is very common on teak decks laid over fiberglass cored decks

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aeventyr60

· #10 · Mar 9, 2015

So, you pumped epoxy into areas that had wet wood, but you think you got it dried out before hand?

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aeventyr60

· #19 · Mar 14, 2015

knuterikt said:
The possible weak spot is not theses bolts.
Chain plate in the inside picture is connected to the top part - this is where the main load is.
You should also check the attachment to the hull.

IS the attachement to the hull a boxlike structure? With the studs coming out, through the plates with nuts on top? Any discoloration of the chainplates on the outside? If you see brown, discolored oozy stuff, the backing material inside may be wet.

I just put the last 5 nuts on my starboard chainplates a few minutes ago. A complete rebuild of the entire structure. 2 gallons of epoxy, 8 quarts of 403 adhesive powder, 2 kilograms of glass. 8mm chainplates. 6 mm backing plates with 3/8 " bolts Glad this job is OVER!

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