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 Durr... 1M"?		  New Topic  Topic Locked
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JudOWNED
1st Mate

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USA
98 Posts
Initially Posted - 06/02/2010 :  13:30:42  Show Profile  Visit JudOWNED's Homepage
So, I will be replacing my forward lower shroud and am trying to figure out how to tune/tighten the standing rigging (I have a vague suspicion everything is too tight or too loose right now). So I was reading the manual and it says, "The upper shrouds should be firm but not tight. A 50 pound push should deflect the upper shroud
about 1M" at shoulder height." Now I figure the answer is going to be so simple as to make me look foolish for not catching it, but what the hell is 1M"? lol I simply can't seem to figure it out.

Did a search for 1M" in the forums and nothing came up.

Matt W.
1983 C25 SR/SK
Monroe Harbor Marina
Sanford, FL.
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delliottg
Former Mainsheet C250 Tech Editor

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USA
4479 Posts
Response Posted - 06/02/2010 :  14:07:45  Show Profile  Visit delliottg's Homepage
I suspect they may mean 1mm, because the only other "M" that makes (little) sense would be meters. However, 1mm sounds like too little so I'm not sure what they mean at all. And there's no way they can move a meter, I don't even think you could have them screwed together & get a 1M deflection.

I tune my rig with a tension gauge and 50' fiberglass tape and a friend. The mast needs to be in column (perpendicular to the deck port & starboard), and raked aft according to the specs in your book (and on the forum) 4" I think, but not sure for a C-25 (we have a C-250). To get it in column, it helps to have a friend sight the mast down the length of the boat from a distance where it's easier to see a lean than when you're right on the deck.

I'm at work so I don't have time to go through the entire process, but I'm sure other folks will chime in shortly with specifics on the C-25.
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Happy D
Admiral

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921 Posts
Response Posted - 06/02/2010 :  14:41:54  Show Profile
[url="http://catalina-capri-25s.org/tech/tech25/snkmast.asp"]Instructions here[/url]
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Dave5041
Former Mainsheet Editor

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USA
3758 Posts
Response Posted - 06/02/2010 :  16:49:05  Show Profile
Drop the "M" - 1 inch
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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.