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 Good time to check the gear...		  New Topic  Topic Locked
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ClamBeach
Master Marine Consultant

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3072 Posts
Initially Posted - 11/04/2003 :  22:59:57  Show Profile
I broke two nylon sail shackles (the part that attaches the slug to the sail) last time out. Since they are cheap, I decided to go ahead and preemptively replace all the slugs/shackes... and it's a good thing I did.

On disassembly, I found that every nylon shackle was failing at the same point. Cracks were forming in the "barrel" that receives the little stainless screw that clamps the shackle onto the sail.

Since the crack was clamped up agains the inside of the shackle, the failures were pretty hard to see until I took the sail home and started taking the shackles apart.

I think the next good wind could have 'unzipped' the whole mainsail... one failed shackle would put more strain on the next, and a chain reaction faiure would have set in.

When's the last time you looked at yours?
WOTAM - '77 Catalina 25 SK/SR Sail Number 158
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cch
Navigator

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202 Posts
Response Posted - 11/05/2003 :  01:13:40  Show Profile
Thanks for the reminder. I try to check every couple of months. I have had the same problem in the past.
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ppetracca
Navigator

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USA
163 Posts
Response Posted - 11/05/2003 :  07:43:35  Show Profile
Are you replacing them with stainless steel shackles? I have replaced all my shackles with stainless and all my slugs with stainless steel bailed slugs.

My new main came with plastic sewn-in slugs. It could not even replace one on the water without having to unstich the webbing, and then sew a new one in. Very hard to do while racing.

Hopefully the all stainless will prevent failurs in the future.
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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts
Response Posted - 11/05/2003 :  08:32:30  Show Profile
On my previous main, I did like Patrick and installed nylon/stainless slugs and stainless steel shackles with plastic protectors.

I don't trust those all nylon slugs and I definately wouldn't use plastic shackles. Just this past season my coworker broke 3 shackles on his main.
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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts
Response Posted - 11/05/2003 :  09:40:59  Show Profile  Visit Frank Hopper's Homepage
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by dlucier</i>
<br />On my previous main, I did like Patrick and installed nylon/stainless slugs and stainless steel shackles with plastic protectors.

I don't trust those all nylon slugs and I definately wouldn't use plastic shackles. Just this past season my coworker broke 3 shackles on his main.
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

I am not following ; what is a plastic shackle? I have plastic slugs on my new Ulman main and they too are sewn/whipped on, but where it there a shackle on a main other than the SS clew shackle that connects the outhaul to the clew and the SS halyard shackle that connects the halyard to the main headboard?
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ClamBeach
Master Marine Consultant

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3072 Posts
Response Posted - 11/05/2003 :  09:47:45  Show Profile
If the slugs are sewn on, you don't have all those slug shackles...
my older main has grommeted holes where the slugs are positioned.

The slugs I had were nylon with stainless inserts.. no failures in
the slugs themselves, only the plastic shackles.
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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts
Response Posted - 11/05/2003 :  10:31:18  Show Profile
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">What is a plastic shackle?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">



It is used in lieu of webbing and/or stainless shackles to attach the sail slugs to the main.
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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts
Response Posted - 11/05/2003 :  10:44:34  Show Profile  Visit Frank Hopper's Homepage
I had never seen those before. Thanks
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.