Shorter Single Line Reef Line - SailNet Community
 
LinkBack Thread Tools
post #1 of 7 Old 11-26-2006 Thread Starter
Living the Dream
 
Join Date: Jul 2005
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Shorter Single Line Reef Line

Question, to which I may already know the possible answer....

Why run the bitter end of the single line reef line through a gromet or block on the leech of the sail and then back down to the boom? Why not simply end at the leech gromet attachment point? I gather doing so may cause the clew/leech portion of the sail to drop/pull in faster than the luff portion. But then gain as the reef line is pulled in wouldn't it draw tighter on the luff gromet/block first, taking what slack it could from the through line going to the clew/leech portion? Overall I don't see any real benifit of doing so, other than shortening the line by a percentage and having a better bight on the clew/leech portion. Just a urious question as I am redisigning my running rigging and this made me go Hmmmm.

dnseal is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 7 Old 11-26-2006
Just another Moderator
 
Faster's Avatar
 
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 16,534
Thanks: 104
Thanked 310 Times in 300 Posts
Rep Power: 10
     
Running the line back to the boom gives you a 2:1 purchase on the line, adding some mechanical advantage. Running simply through the cringle does add some friction, but not enough to defeat the mech. advantage. Using a good block reduces the friction, but adds weight and expense.

A single line as you describe would only save you line length to the depth of the reef - a couple of feet for the first, more for the second etc.

But you will find it much more difficult to actually pull the reefed clew in tight (and with sufficient "outhaul") without a winch.
Faster is offline  
Quote Quick Reply Share with Facebook
post #3 of 7 Old 11-26-2006 Thread Starter
Living the Dream
 
Join Date: Jul 2005
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Thumbs up Understood

Good Point, however, when reefing I typically turn to wind and adjust/fit without loads. I understand and appreciate your view though. I am mounting a double reef system with the first reef going to the helm station and the 2nd mast mounted as it would most likely require greater attention, balance and if needed. I am opting for the block system to reduce friction, which on Stella shouldn't affect her 450 sq ft too much. By the way She has a very low sail aspet ratio. I was just wondering if there were othe possibilities out there.... thanks again
gil
dnseal is offline  
Quote Quick Reply Share with Facebook
post #4 of 7 Old 11-26-2006
ASA and PSIA Instructor
 
Join Date: Apr 2000
Posts: 3,566
Thanks: 7
Thanked 24 Times in 24 Posts
Rep Power: 16
 
reef to the boom

Quote:
Originally Posted by dnseal
Question, to which I may already know the possible answer....

Why run the bitter end of the single line reef line ....back down to the boom? ...
You need the turn on the boom so that the foot of the reefed sail is properly tensioned, the foot gets shorter with each reef. The termination of the reef line on the boom in effect provides a new clew, at an appropriate location for the length of that foot. The reefing line needs to both pull the reef point TO the boom while also tensioning the foot

If you did not connect the bitter end to the boom, and you were trying to trim the leech reefing point out to the normal clew location at the end of the boom, you'd run the risk of ripping reef point right out of the sail, or at best the main would have a fat and not so funny shape.

Last edited by sailingfool; 11-26-2006 at 12:24 PM.
sailingfool is offline  
Quote Quick Reply Share with Facebook
post #5 of 7 Old 11-26-2006
Senior Member
 
pigslo's Avatar
 
Join Date: Nov 2004
Posts: 804
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 11
 
You need that block for the additional purchase and possible winch to tighten what is now the new outhaul. Mine goes forward nearly to the mast and yes I must stand at the mast to reef but in one place I am able to attach the new clue at the mast and winch the line (I have a winch on the boom) of the new outhaul and cleat it off. One more thing... those lines that keep being refered to as "reef points" are called cringles and their purpose is to gather up the extra foot only. I am not pointing this out to be a know it all but merely to set the record for the newer sailors that might rip their sail up thinking that their purpose was to reef the sail.


All opinions expressed here by pigslo come straight from the pigs snout and as such are not to be taken seriously, only for entertainment, not to be considered valuable, or otherwise read. Consult your attorney before proceeding. Consult the yellow pages if you do not have an attorney. Ask a friend if you do not have a yellow pages. Buy a boat if you do not have a friend and you will have many then.

Last edited by pigslo; 11-26-2006 at 12:55 PM.
pigslo is offline  
Quote Quick Reply Share with Facebook
post #6 of 7 Old 11-26-2006
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 15 Times in 12 Posts
Rep Power: 14
         
You have to have the line come straight down to the boom as well as back to the end of the boom in order for the new "clew" of the sail to be tensioned properly.

Ideally, you want to pull the clew reefing cringle down as well as out towards the end of the boom. Running the line just up to the reefing cringle will give you the out towards the end of the boom, but will not allow you to give sufficient "downwards" force on the cringle. In the case of strong winds, which is why you're reefing to begin with, the cringle will rise and stress the sail where it isn't properly reinforced, often causing it to tear. Saving some $20-30 on the slightly shorter reefing line could cost you $300+ in sail repairs.... not exactly a wise way to spend your money.

PBTW, any grommet through a sail is called a cringle, and the smaller ones at the reefing points are not reinforced to hold the sail against the stress of the wind, but are merely designed to allow you to tie up the bunt of the sail and keep it from chafing itself to death on a longer passage, as Pigslo has pointed out. Also, it is very important to remember to untie these before trying to shake out a reef, or you'll very likely tear the sail.

The two larger reefing cringles at the luff and leech are heavily reinforced to act as the new "foot" of the reefed sail.

One last point...if you're doing a double line reefing system, it is better to tighten the tack reefing line first, and then do the clew reefing line. Pineapple sails recommends against single-line reefing systems because you can not tension the tack reef point prior to tensioning the clew reef point, and that can damage the sails.

Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
sailingdog is offline  
Quote Quick Reply Share with Facebook
post #7 of 7 Old 11-26-2006
Senior Member
 
paulk's Avatar
 
Join Date: Jun 2000
Location: CT/ Long Island Sound
Posts: 2,605
Thanks: 4
Thanked 26 Times in 25 Posts
Rep Power: 16
 
More reasons

You will also find that having the reefline go just from the boom and to the reef cringle, without going back down to the boom causes a couple of other bad things. 1/The boom will tend to droop, so you may not be able to sheet it in all the way before it starts to hit the dodger, cabintop, or the heads of crew in the cockpit. 2/As Sailingdog mentioned above, the leech will be looser, because there is less downward component pulling on the clew. When the wind pipes up and you want a reef, you want the sails to be as flat as possible, not loose. On a positive note, taking the end of the reefing line back to the boom can also help to bunch the sail up a bit, so it doesn't flog so much. We have ours set up this way, and it is quite simple and effective.
Attached Thumbnails
brise typique.jpg  
paulk is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
The Basics of Reefing Mark Matthews Learning to Sail Articles 0 03-29-2004 07:00 PM
The Basics of Reefing Mark Matthews Seamanship Articles 0 03-29-2004 07:00 PM
The Basics of Reefing Mark Matthews Gear and Maintenance Articles 0 03-29-2004 07:00 PM
The Basics of Reefing Mark Matthews Cruising Articles 0 03-29-2004 07:00 PM
Hold That Line Tom Wood Gear and Maintenance Articles 0 10-03-2002 08:00 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome