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  #111  
Old 11-01-2013
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Re: Embedded Chain plate maint/replacement

Quote:
Originally Posted by chucklesR View Post
Unfortunately that is on hold until the spar is dropped because I'd rather drop it with a plan than have it decide to just drop. I'm too chicken to take two shrouds off.
You can replace a couple of shrouds with well tensioned halyards - as long as you stay at the dock. I've done it a few times with no problems.

It works best if you slack off their opposite numbers a bit so the athwartship tension is equalized.
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  #112  
Old 11-01-2013
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Re: Embedded Chain plate maint/replacement

That's the problem JonB, not staying at the dock - have to move it 1.5 miles up river, and then haul it out and put her on stands.
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  #113  
Old 11-01-2013
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Re: Embedded Chain plate maint/replacement

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Originally Posted by Faster View Post
Based on what you've found... are you going to tackle the other side 'just in case'.. or to match what you're about to create now?
Yes, I'm doing both sides, aft lower and uppers as well as the back stay. The fwd lower will be just a weep hole and inspection port (of some type).
The fore stay is well mounted fully exposed on the end of the bow spit - no need to do it as I can inspect it and tell it's fine.
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  #114  
Old 11-01-2013
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Re: Embedded Chain plate maint/replacement

I got an update from Dylan ( DYLAN BAILEY?S YACHT Surveying Marine Surveyor Boat & Yacht surveys & Consulting St. Augustine, Florida)

His dad is also in the business and is doing the pull and replace of chain plates on a Irwin 43 in Norfolk. Mentioned it earlier, figured a reminder was called for.

Bottom line, On that Irwin 43, of the 6 chain plates pulled (aft lower, upper, forward lower - both sides). Of the six pulled 3 had serious corrosion - see previous pictures and posts.

Here's some photo's (inside, outside) of new plates installed - basically following the same plan that Jimmy C at The Rigging Company is recommending for mine.

The Rigging Company - mod's if I'm out of line holler and I'll remove the links, what I'm seeing with 11 plus pages is a lot of folks need and want information on this.

I like dealing with Jimmy, no bull, no sugar - and never assumes he's got your job.

You've seen the outside of my 38 CC (first post) l 43 CC is pretty much the same - here you see what a bolt through would look like.


and here is the inside - note I've got LOT a lot of grinding to do
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Last edited by chucklesR; 11-01-2013 at 06:24 PM.
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  #115  
Old 11-01-2013
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Re: Embedded Chain plate maint/replacement

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Originally Posted by chucklesR View Post
I got an update from Dylan ( DYLAN BAILEY?S YACHT Surveying Marine Surveyor Boat & Yacht surveys & Consulting St. Augustine, Florida)

His dad is also in the business and is doing the pull and replace of chain plates on a Irwin 43 in Norfolk. Mentioned it earlier, figured a reminder was called for.

Bottom line, On that Irwin 43, of the 6 chain plates pulled (aft lower, upper, forward lower - both sides). Of the six pulled 3 had serious corrosion - see previous pictures and posts.

Here's some photo's (inside, outside) of new plates installed - basically following the same plan that Jimmy C at The Rigging Company is recommending for mine.

The Rigging Company - mod's if I'm out of line holler and I'll remove the links, what I'm seeing with 11 plus pages is a lot of folks need and want information on this.

I like dealing with Jimmy, no bull, no sugar - and never assumes he's got your job.

You've seen the outside of my 38 CC (first post) l 43 CC is pretty much the same - here you see what a bolt through would look like.


and here is the inside - note I've got LOT a lot of grinding to do
That's exactly what I recommended back in post #28. Certainly the simplest and most straightforward replacement.
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  #116  
Old 11-01-2013
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Re: Embedded Chain plate maint/replacement

Chuck, why not build the area up, rather than grinding it down? You've got a lot less stainless steel distributing the load; wouldn't you want the fiberglass in that area to be beefier?
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  #117  
Old 11-02-2013
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Re: Embedded Chain plate maint/replacement

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Originally Posted by jimgo View Post
Chuck, why not build the area up, rather than grinding it down? You've got a lot less stainless steel distributing the load; wouldn't you want the fiberglass in that area to be beefier?
Sort of yes. One thing I have to maintain is the angle of the chain plate.


Here's a video of me cutting a tiny hole to drain some water.

Sorry, forgot to put on my makeup.
Mod's feel free to edit, I don't know how to embed from my Google +

https://plus.google.com/u/0/11651535...49/posts/p/pub

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Last edited by chucklesR; 11-03-2013 at 06:18 PM.
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  #118  
Old 11-02-2013
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Re: Embedded Chain plate maint/replacement

Jimmy C at the Rigging company does a nice job. He did my chain plate polish 3 years ago and replaced my running rigging, placed a hydraulic back stay etc. Nice guy, knows his stuff and went out with me to check everything after install. Looks like your project keeps on going in the correct direction.
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  #119  
Old 11-04-2013
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Re: Embedded Chain plate maint/replacement

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Originally Posted by chucklesR View Post
Here's some photo's (inside, outside) of new plates installed - basically following the same plan that Jimmy C at The Rigging Company is recommending for mine.
That looks nice and sure is a simple clean way to do the job.

They obviously got it to work but I've got a question about the process.

I'm assuming that the bolts we see are carriage bolts.
The head is in direct contact with the gelcoat.
I've used a lot of carriage bolts but always with the head on wood, usually soft wood. We would just drill a hole pop in the bold and crank on it until the head crushed into the soft wood.

In your case I suspect you would have to somehow cut the square for the head and be very, very careful in tightening the nuts as to not crush the gel-coat.
Probably very important to use a locktite product too since you can't really tighten them hard.
Is their a good chance that even if the bolts are perfectly installed that the heads under tension could cause gelcoat cracks?


Does that sound about right?

I'm also concerned that the chain plate is now only supported by the width of the CP and not by the full length of the horizontal pieces.
The factory design was obviously driven by some cost factors but your through bolted design would have been even cheaper to do.
Do you think they went with the embedded design only to eliminate the bolts showing or maybe partly due to structural reasons?
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Last edited by davidpm; 11-04-2013 at 12:13 AM.
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  #120  
Old 11-04-2013
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Re: Embedded Chain plate maint/replacement

Carriage bolts, yes. Backing for the heads- I'm hearing none needed. I thought of brass/bronze squares (done nicely).
I've got no idea about the thoughts and intentions David; what I do know is I wish Irwin had done these 'normally'.
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