Changing a shroud - SailNet Community
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post #1 of 9 Old 04-12-2016 Thread Starter
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Changing a shroud

If you were going to change out an after lower on a conventional rig, would you loosen all the lowers while that one was off the boat, or just undo the one you were replacing, leaving the others tight? Maybe 48 hours, no more.

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post #2 of 9 Old 04-12-2016
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Re: Changing a shroud

Just change out the one without messing with the other shrouds. Be sure when you retighten the shroud the mast stays in column. Siting up the sail track will tell you. If you have a tension gauge can measure the tuning before pulling the shroud and retighten to that same tension after replacing the shroud.
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post #3 of 9 Old 04-12-2016
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Re: Changing a shroud

I would loosen its mirror before pulling it. I doubt it's strictly required, but on a lower there's no reason not too.

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post #4 of 9 Old 04-12-2016
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Re: Changing a shroud

We have done it by just taking off the lower without slacking off the opposite shroud. We could see no change in the mast while we were lowerless.

After the refit we have decided to sell Ainia. We want something smaller that would be could for the light summer winds of Lake Ontario, although we plan to spend at least a couple of winters in the Caribbean before heading north.
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Re: Changing a shroud

While I don't believe it is "wrong" to leave mirror in tension, I would go with Stumble as it may be easier to tune both lowers upon replacing the one. I would recommend rechecking tension in a month as the new will "stretch" just a bit when first installed. Stretch is a poor term, maybe the lay will tighten, slacking stay would be better.
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post #6 of 9 Old 04-12-2016
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Re: Changing a shroud

Quote:
Originally Posted by captjcook View Post
While I don't believe it is "wrong" to leave mirror in tension, I would go with Stumble as it may be easier to tune both lowers upon replacing the one. I would recommend rechecking tension in a month as the new will "stretch" just a bit when first installed. Stretch is a poor term, maybe the lay will tighten, slacking stay would be better.
Ithe term is constructional stretch. And yes you need to tune it out. Generally it takes about a day to work itself out, unless the shroud is very heavily stressed.

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post #7 of 9 Old 04-15-2016
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Re: Changing a shroud

Could one temporarily replace the tension with a halyard?
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Re: Changing a shroud

Banjo,

Not really. The lowers control lateral bend in the middle of a mast, and on swept back spreaders control the forward-aft bend. A halyard only controls the top of the rig, and perhaps a bit of compression vertically.

But almost all masts can stand just fine with slack or missing lowers. Until you get into multiple spreader rigs and are talking about all of the non-cap shrouds.
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post #9 of 9 Old 04-19-2016 Thread Starter
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Re: Changing a shroud

Thanks all. Job is done. Just tightened against the Stb fwd lower and all is well. I love it when folks in the West Indies can do a job in a jiffy.
Highly recommend Turbulence, Grenada, Prickly Bay.

"Any idiot can make a boat go; it takes a sailor to stop one." Spike Africa aboard the schooner Wanderer in Sausalito, Ca. 1964.

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