Chainplate Rebeding And Depth Sounder Question (so I Don't Clog Up Boards, Thank You)

[Ed Schenck]

I disagree. I have worked a lot with various epoxy puddings. No way can I fill that void and leave a perfect angled hole that is 3/16" by 1 1/2" by 2"(depth, a guess).

 

[Maine Sail]

I disagree. I have worked a lot with various epoxy puddings. No way can I fill that void and leave a perfect angled hole that is 3/16" by 1 1/2" by 2"(depth, a guess).

This is why you wrap the chain plate in about 1/8" thick of electrical tape, wax the surface of it, reinstall chain plate then tape the cabin side with Gorilla tape to prevent the epoxy from drooling onto the cabin. Inject non-thickened epoxy let sit for about one minute then suck it all out, mix with cabosil and re-inject.

When you're done you will have a perfect angle mimicking the chain plate but with a 1/8" even gap created by the tape wrap. The all you need to do is remove the chain plate and chamfer the top edge of the hole slightly.

Part of the reason you keep re-leaking is probably Silicone contamination. Even new Silicone won't stick to silicone contamination. Nothing will really stick to Silicone contamination, it's kind of like trying to bed a non-stick fry pan..

P.S. My chain plates were bedded with butyl from the factory and are still dry.

 

[Ed Schenck]

Thanks MaineSail, that's the detail I was seeking. I'll be able to see the amount of missing core once I get the chainplates out. If the voids are too great then I will replace a large area of coring. Either way I will use your suggested method of making the holes for the chainplates.

But then how do I use the buytl rubber? Just wrap the chainplate and cram it down into the hole? And I guess leave some on top to compress under the cover.

 

[sailingdog]

To use the butyl tape on the chainplates...mount the chainplates normally, then pack the top of the chainplate opening with butyl rubber. It helps if you countersink/chamfer the edges of the chainplate hole. Then, if your chainplate has a coverplate, cover the bottom of the chainplate cover with butyl rubber and then fasten it down over the chainplate.

 

[Ed Schenck]

Chainplate rebedding.

Here are the offending chainplates. Thanks Maine, thanks 'Dog, I have saved the advice away as a future project. I just now took these pictures while the wind was blowing 30+ knots out of the NW. No sailing today and I sure as heck am not going to loosen the shrouds. Also not sure if I can tackle this before going back to Ohio. Might be a fall project. I think the new silicone will hold until then. Thanks again.