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Dan86
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130 Posts
Initially Posted - 08/17/2003 :  22:48:27  Show Profile
Being new to the sailing fraternity, i have a question that probably is on the stupid side, but, what the heck. I sail in corpus christi texas, with a tall rig 86. I have recently reefed the main sail to get more clearance under the boom for a bimini. When sailing, I notice a flutter in the leech. (had the same when not reefed). Is this fixed by a boom vang? I sail next to boats in the same wind and they do not have this flutter. Thanks dan 86FK/TR
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Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts
Response Posted - 08/17/2003 :  22:50:41  Show Profile
Hi Dan... Are your battens in their pockets?

Dave Bristle - 1985 C-25 #5032 SR-FK-Dinette-Honda "Passage" in SW CT
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Dan86
Navigator

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130 Posts
Response Posted - 08/17/2003 :  22:54:30  Show Profile
The Battens are in the pockets!!
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Derek Crawford
Master Marine Consultant

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USA
3321 Posts
Response Posted - 08/17/2003 :  23:41:22  Show Profile
Dan - flutter in the mainsail leech can have several causes. The mainsail itself is stretched. The topping lift is too tight. The reefing line at the clew is not pulled all the way down to the boom. Not enough tension on the vang, and lastly maybe your bimini is preventing the boom from coming down far enough to tighten the leech.
The guys who have biminis may know some more.<img src=icon_smile_wink.gif border=0 align=middle>
Derek

<img src="http://im1.shutterfly.com/procserv/47b3dc30b3127cce942c608d6f1e0000001010" border=0>
TRFK#2262"This Side Up"
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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts
Response Posted - 08/18/2003 :  10:15:33  Show Profile
Do you have a leech line?

If so, it may need to be tightened just enough to take the flutter out of the leech of the sail.

<img src="http://www.catalina25-250.org/c25sm.gif" border=0>Don Lucier<img src="http://www.catalina25-250.org/c25sm.gif" border=0>
<img src="http://im1.shutterfly.com/procserv/47b2d904b3127cce9f7cd9ffdf1d0000003010" border=0>
North Star SR/FK

Edited by - dlucier on 08/18/2003 10:19:11
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Sea Trac
Master Marine Consultant

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Vanuatu
1357 Posts
Response Posted - 08/18/2003 :  10:47:10  Show Profile
<BLOCKQUOTE id=quote><font size=1 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>
The guys who have biminis may know some more.<img src=icon_smile_wink.gif border=0 align=middle>
<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>

Derek's right. Leech flutter always reminds me that I've forgotten to collapse the two center tensioning frames on my bimini. <img src=icon_smile_blush.gif border=0 align=middle>

J.B. Manley, Antares '85 FK/SR #4849
Grand Lake O' The Cherokees, NE Oklahoma
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Shawn
1st Mate

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USA
62 Posts
Response Posted - 08/18/2003 :  21:58:28  Show Profile
As Don L. says, pull on your leech line to take the flutter out of the sail. BUT, don't pull it so much that it curls the leech over to much. Just enough to take the flutter out. Leech tell tales help a lot with this adjustment. You want to make sure the air is exiting the main smoothly.

Shawn
1980 C25 tr/fk #1960
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eric.werkowitz
Captain

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USA
283 Posts
Response Posted - 08/19/2003 :  18:31:16  Show Profile
Dan,

My '85 TR had the same problems. I just had a sail loft shorten the main (from the top) by a couple feet to allow use of the bimini without reefing. I also had them install a leach line which it didn't have. That cured the luff (flutter). Both mods cost about $175. By the way, allowing the leach to continue luffing will fatigue the sail material, so it's a worthy investment.

Eric Werkowitz
C25 #4969
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Dan86
Navigator

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130 Posts
Response Posted - 08/19/2003 :  18:38:02  Show Profile
Thanks for the input, I do not have a leech line, but am looking into adding one and altering my sail to work with the bimini top height. Thanks again Dan 86
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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.