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Main Sail Batton Tension

Printed From: Yachts and Yachting Online
Category: Dinghy classes
Forum Name: Dinghy development
Forum Discription: The latest moves in the dinghy market
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=1360
Printed Date: 15 Aug 25 at 9:05am
Software Version: Web Wiz Forums 9.665y - http://www.webwizforums.com


Topic: Main Sail Batton Tension
Posted By: BBSCFaithfull
Subject: Main Sail Batton Tension
Date Posted: 08 Jan 06 at 10:38pm
Hi fellow forumites, I was just wondering  that when sailing in differing wind conditions if you would need  to change the  curve or tension of the battons? Oh by the way it is a fully battoned sail if that makes any difference? Any comments will be gratefully received.
Regards,
Alex.


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Replies:
Posted By: Strawberry
Date Posted: 08 Jan 06 at 10:45pm

Light winds ("crew sitting to leeward"):
I like to let a little tension off to keep the sail flat and reduce drag.
(maybe controversial some people would say go deeper for more power)

Medium wind ("crew semi trapezing" up to "twin flat wiring but mainsheet constantly tight")
Enough tension to pull the point of max. camber to about a third to half way back

Heavy Wind ("twinning and crew playing the main")
Let some tension off to help flatten the sail and depower.



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Cherub 2649 "Dangerous Strawberry


Posted By: BBSCFaithfull
Date Posted: 08 Jan 06 at 10:53pm
Thanks strawberry

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Posted By: jeffers
Date Posted: 09 Jan 06 at 9:27am
I would go with Strawberry on this, in light airs you want a flatter sail to help the wind flow over it. It is amazing how surprised a lot of people look when I sail on by them in light airs with a flat sail while they are there with a big bag in theirs. This is despite a few training sessions where I have pointed this out to them!

All you really need to do is look at most tuning sheets and you will see that (aside from mast rake where is applied and jib cars) the mainsail settings are very similar to the heavy weather settings......


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Paul
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D-Zero GBR 74


Posted By: redback
Date Posted: 09 Jan 06 at 7:41pm
Common wisdom on this in the 4000 fleet is don't fiddle.  Put them in with just enough tension to take the vertical creases out of the sail and leave them.  Whatever you do don't have them too lose - be warned if they jump out of the mast-end sockets when the sail flogs they poke right through the fabric almost immediately.


Posted By: carshalton fc
Date Posted: 09 Jan 06 at 7:43pm

yes i tottaly agree with you redback.  our battens are fine alex.  it will just break if we start fidleing!!  look at what u did to my trapeze elastic!!



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Posted By: BBSCFaithfull
Date Posted: 09 Jan 06 at 10:30pm
U cut the elastic not me i told u 2 take the knot up but did you listen?? nooooo 

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Posted By: redback
Date Posted: 10 Jan 06 at 12:36am
Here's another tip about the battens.  Its difficult to mark them so that you know what tension you have used in the past. Use tippex its the only thing I know which will leave a mark on black tape.


Posted By: carshalton fc
Date Posted: 10 Jan 06 at 12:39pm

Originally posted by BBSCFaithfull

U cut the elastic not me 

ahh dont get to angry   ur................. has a bucket.

yer well that was cos u tightened them in the first place.  i will get shom shock cord at the boat show. 

yer i imagine tipex is the best option or abit or tape.  but i think they are fine for the moment.  lets just consentrate or our overall sailing rather than fideling with things to get a tini bit more speed. 

see ya sunday looks like there will be some tastie wind 



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International 14 1503


Posted By: Scooby_simon
Date Posted: 10 Jan 06 at 12:44pm

Most cat sailors will just set and leave most of the battens.  May play around with the top one on a Fat top" sail depending on wind speed.

To flatten the sail in the really light stuff, just  add a ;ittle more downhaul.



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Posted By: 5420
Date Posted: 10 Jan 06 at 12:50pm

but wont that also give you alot of leach tenchon which it not what you want in the light stuff

as you want a flat loss sail

 

i may be rong



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Posted By: Scooby_simon
Date Posted: 10 Jan 06 at 3:04pm
Downhaul loosens the leach !  (you might call it cunningham).

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Posted By: 5420
Date Posted: 10 Jan 06 at 5:57pm
ok i see wot you are saying but i think it would also depend on wot boat you sail or more important what kind of sail it has

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