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Old 27-08-2012, 08:57   #1
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Chain Plate Question

Just did a dye test on my chain plates and I need to replace some of them. As usual there are no standard sized ones that will fit so I need to have them custom made. I'm thinking of making them myself - depends on time and what I get for a quote from some local people.

My questions is this- at the top of the original plate they welded a large washers on either side of the plate- I'm guessing to give the pin more surface area to hold onto. Do you think it's necessary to have those washers? or can I go with just the straight bar.

The plates are 15" long, 1 1/8" wide, 1/4" thick with a 1/2" overall bend. Attached to the inside of the hull and through bolted with 5 bolts.
thanks
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Old 27-08-2012, 09:03   #2
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Re: Chain plate Question

1/4" thickness does sound a bit thin. I think your idea that the washers are there to provide a larger bearing area for the pin sounds right.

I would consider just making the new chainplates out of thicker material. Mine are basically the same shape and similar size so I just ordered some stainless bar stock online to make the replacements. Thought about cutting and drilling myself but was pretty cheap to get it done at the local machine shop.
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Old 28-08-2012, 19:39   #3
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Re: Chain plate Question

I agree. They will look more elegant if made from one thicker piece of stock and will have reduced chance of crevice corrosion.
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Old 28-08-2012, 19:41   #4
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Re: Chain plate Question

Quote:
Originally Posted by skipmac View Post
I would consider just making the new chainplates out of thicker material.
Think chainplates are cool.
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Old 28-08-2012, 19:47   #5
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Re: Chain plate Question

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Think chainplates are cool.
Are think chainplates some sort of "smart-plates"? Do they interface to NMEA2000 and my chartplotter?
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Old 28-08-2012, 19:49   #6
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Re: Chain plate Question

big and strong and ugly for me everytime
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Old 28-08-2012, 20:02   #7
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Re: Chain plate Question

Go full thickness. Greater strength; no crevises; no heat history. Use 316L material or go for Titanium Grade 5. Check out my photos for the project on our boat. Four plates 1/2 X 24 long X 2-1/2 wide. Good catch finding the damage before the disaster. Ours was detected when I removed & polished the old ones.

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