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 Post subject: Re: Replacing chain plates
PostPosted: 16 May 2016 10:26 
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Skipper

Joined: 24 Sep 2013 09:20
Posts: 393
I agree about that trim piece and have wondered if it's something that some PO did. What do other's see behind those port chain plates on their Tartans? Does it look anything like any of my pictures before I put the metal plate there?

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Zach Duncan
SV Holiday
Hull# 280


 
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 Post subject: Re: Replacing chain plates
PostPosted: 23 May 2016 13:05 
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Skipper

Joined: 24 Sep 2013 09:20
Posts: 393
All new chain plates installed including the forestay and back stay plates and finally have all the brand new rigging hooked up! Splice This project has been ongoing since January! Also, doing a butyl tape experiment on the forward lowers since they are the easiest to monitor. Going to see if everything I've read about it being the best thing for bedding is right. I usually use 4200. I'm also going to try butyl tape on some deck hardware. Anyone else tried it? The tales of it lasting 30 years and being 100% effective sound fishy but wouldn't it be nice if it's true?


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Zach Duncan
SV Holiday
Hull# 280
 
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 Post subject: Re: Replacing chain plates
PostPosted: 25 May 2016 09:30 
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Skipper

Joined: 29 Dec 2006 09:38
Posts: 656
The windshield guy just put in a new windshield in my Subaru yesterday. I asked him if they were using Butyl tape. He wrinkled up his face and said "We did for awhile, but the stuff is hard to get positioned right and leaks. We use Urethane goo now." I would not take one comment to be definitive and I have no experience with Butyl tape but have resealed my ports with 4200 twice in 25 years and not had a leaking issue so I probably would not change.
Ray Durkee
Velera T37 #373


 
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 Post subject: Re: Replacing chain plates
PostPosted: 30 Jun 2019 12:20 
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Midshipman

Joined: 31 May 2017 22:18
Posts: 66
Location: Gulf of Mexico
Our boat has always made a nice creaking sound while underway. But after our bash to the Bahamas this year, we started hearing an excessive amount of creaking coming from the bulkhead in the bathroom and on further inspection see the tell-tale signs of water intrusion.

I want to dig into the chainplates to to see what might be happening and don't really know where to begin. Do I need to fully remove them to reseal them? Or is that something I can do at the deck level?

@zdunc where did you have your new ones fabricated?

Is the dye inspection process a niche service? Or is it common/easy enough to find somewhere to do that?

And last question is the elctro-polishing just an attempt to avoid future crevice corosion?

Thanks all for your help!


 
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 Post subject: Re: Replacing chain plates
PostPosted: 30 Jun 2019 16:41 
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Tactictian

Joined: 16 Jan 2019 08:52
Posts: 103
The dye penetrant can be purchased
https://www.bergeng.com/product/01-5970-48.html

in a kit form with aerosol cleaner,penetrant and dye so no need for black light. Used by any rigging outfit.#337


 
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 Post subject: Re: Replacing chain plates
PostPosted: 30 Jun 2019 16:53 
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Tactictian

Joined: 16 Jan 2019 08:52
Posts: 103
Sorry, meant to include this from the supplier,
https://www.magnaflux.com/Products/SK-Kits.htm

This site has more info on doing the test. It's easy to do and probably is good to have around when your rig is next on horses in the yard. #337


 
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 Post subject: Re: Replacing chain plates
PostPosted: 01 Jul 2019 07:58 
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Skipper

Joined: 09 Aug 2017 15:35
Posts: 725
Location: Maine/USVI
Velera wrote:
The windshield guy just put in a new windshield in my Subaru yesterday. I asked him if they were using Butyl tape. He wrinkled up his face and said "We did for awhile, but the stuff is hard to get positioned right and leaks. We use Urethane goo now." I would not take one comment to be definitive and I have no experience with Butyl tape but have resealed my ports with 4200 twice in 25 years and not had a leaking issue so I probably would not change.
Ray Durkee
Velera T37 #373


LOL! "Subaru." You must be in Maine. The only area of concern I've had with my chainplates is the port forward lower. There is an almost imperceptible gelcoat crack next to the chainplate. Maybe just a hard jibe. Nobody else sees it until I point it out. Dammit. Now I have to tear that all apart. All the Newfounds are in with butyl. Bottom is 1/2 scraped, dark blue gelcoat is coming back nicely with aggressive compounding. A million other projects, including tying down the cabin sole boards with catches, and, eventually, tying into the W-50. I rebuilt a Volvo once after a mechanic quoted me $1200 labor and $1200 in parts. I just figured if that guy could do it, so could I, right down to the big end bearings, rings, valves, everything. Fired right up on the first push of the button and ran for years. It was just that the Swedish engineers put the "comma" (decimal point) in the wrong place in the manual for measuring TDC on the cylinder heads. Instead of like 0.0012 it was 0.012 or something like that. That killed a couple hours.


 
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 Post subject: Re: Replacing chain plates
PostPosted: 07 Jul 2019 12:20 
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Midshipman

Joined: 31 May 2017 22:18
Posts: 66
Location: Gulf of Mexico
Zoombats wrote:
Sorry, meant to include this from the supplier,
https://www.magnaflux.com/Products/SK-Kits.htm

This site has more info on doing the test. It's easy to do and probably is good to have around when your rig is next on horses in the yard. #337



Thank you!


 
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 Post subject: Re: Replacing chain plates
PostPosted: 15 Jul 2019 10:07 
Offline
Skipper

Joined: 09 Aug 2017 15:35
Posts: 725
Location: Maine/USVI
This is a test, but what it might show is my stbd chainplate backing. A large sheet of aluminum plate in the locker. I have a feeling something was redone, but I'm working on the outside right now. I'll get more photos in if this works. I've got 10 days in the Virgin Islands (alone this time) at the house, and may be able to get some of the rudder/skeg/bottom/hull deck joint/ blah blah posted.


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STBD Chainplate backing.jpg
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 Post subject: Re: Replacing chain plates
PostPosted: 15 Jul 2019 10:09 
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Skipper

Joined: 09 Aug 2017 15:35
Posts: 725
Location: Maine/USVI
Ah, it worked. Port chainplates.


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Port cap shroud and lower plates.  .jpg
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