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Old 06-01-2017, 00:36   #1
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lagoon 400 s2 catmaran seized shrouds

we were told by our agent that the shrouds were too loose so have tried to tighten them. have used a pipe wrench, wd 40 but they wont budge on either side.

Help?!
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Old 06-01-2017, 01:01   #2
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Re: lagoon 400 s2 catmaran seized shrouds

Have you first removed the 4 locking pins on each shroud turnbuckle? The ones with the recessed hex socket. Perhaps some WD-40 or Innox overnight on the threads?

By the way, how are you or the agent gauging correct shroud tension?

Don't forget to apply plenty of Tefgel or winch grease once the thread is loosened.
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Old 06-01-2017, 03:56   #3
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Re: lagoon 400 s2 catmaran seized shrouds

Terrapina, please have a qualified rigger come down to your boat and inspect your rigging. There is no way in this wide world I would take the word of an unqualifed person (agent) as to the correct tension of any of your rigging ( unless of course your agent is a rigger)
It is a specialised job and the incorrect tension can have dire consequences or at the very least affect the performance of you boat considerably. Take note that it may be something totaly unrelated to the turnbuckle that is causing the issue.



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Old 06-01-2017, 06:02   #4
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Re: lagoon 400 s2 catmaran seized shrouds

Greetings and welcome aboard the CF, Terrapina.
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Old 06-01-2017, 06:47   #5
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Re: lagoon 400 s2 catmaran seized shrouds

Terrapina - Not sure where you are located. Here in the states, we have qa product called PB Blaster that would be useful to. Be careful not to spray it on fiberglass etc.

Also, when reassembling metal parts on the boat, I often use something like anhydrous lanolin as an anti-seize corrosion protectant.

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Old 06-01-2017, 07:00   #6
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Re: lagoon 400 s2 catmaran seized shrouds

Lanacote is a good choice and lanolin. It's not really a lubricant, and you're not looking for a lubricant either. You want to prevent water from entering and getting trapped in the threads of the turnbuckle. For that purpose lanolin is great.

Lagoon used some turnbuckles that were dissimilar metals, stainless rod and chrome plated bronze body, so that is likely the source of your problem. PB Blaster and some heat are probably some best bet to try and get them turning.
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Old 08-01-2017, 21:47   #7
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Re: lagoon 400 s2 catmaran seized shrouds

[QUOTE=Suijin;2296118
Lagoon used some turnbuckles that were dissimilar metals, stainless rod and chrome plated bronze body, so that is likely the source of your problem. PB Blaster and some heat are probably some best bet to try and get them turning.[/QUOTE]

Please don't spread misinformation. Stainless rod/ stainless body turnbuckles are susceptible to galling, so most reputable turnbuckle manufacturers use a stainless rod and bronze body. Stainless and bronze are pretty close on the galvanic scale, so corrosion is not too much of an issue.
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