Unbreakable Furling Line... - SailNet Community
Reply
 
LinkBack Thread Tools
post #1 of 18 Old 05-13-2008 Thread Starter
Closet Powerboater
 
MedSailor's Avatar
 
Join Date: Mar 2008
Location: Anacortes PNW
Posts: 3,579
Thanks: 258
Thanked 112 Times in 101 Posts
Rep Power: 8
 
Unbreakable Furling Line...

As I talk with sailmakers about sailing with a reefed headsail in medium to heavy air stories pop up of furling lines parting and the sail coming fully unrolled, usually with disastrous consequences. Loosing the sail being a benign consequence and loosing the rig being on the upper end of bad.

Sounds like something to avoid...

Does the furling line part because of pure tensile stress placed on it when sailing upwind in a blow with sheets tight? Does it part from chafe at the drum or at the jam-cleat?

Could one avoid this problem by rigging the furling line with vectar-spectran-wowzam racing line? You know the stuff that weighs less than goose down but is stronger than titanium. (I read the advertising brochure) If it is a chafe problem then perhaps an over sized line or some kind of extra chafe resistant line (static climbing rope)?

Has anyone tried this?

MedSailor

I have a sauna on my boat, therefore I win.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
MedSailor is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 18 Old 05-13-2008
Once known as Hartley18
 
Classic30's Avatar
 
Join Date: Aug 2007
Location: Melbourne, Australia
Posts: 4,859
Thanks: 46
Thanked 65 Times in 65 Posts
Rep Power: 10
   
Dock
Whilst I admit I don't have the vast experience and knowledge others do here, the only instances I've heard of of furling lines letting go has been a result of either chafe or (more usually) slipping off the cleat.

I've never heard of a line snapping from sheer force and can't see how the usual set-up could be loaded enough for it to snap.

Aside from it coming off the cleat (usually a v-jamb or similar), chafe can happen anywhere depending on how the line has been run. I've not heard of chafe happening at the cleat or on the drum, but I've heard of a jib lazy sheet cutting through a furling line run along the deck and over the cabin-top in a rather haphazard fashion.

I've seen people run furling lines below deck to avoid chafe..

-
"Honestly, I don't know why seamen persist in getting wrecked in some of the outlandish places they do, when they can do it in a nice place like Fiji." -- John Caldwell, "Desperate Voyage"

Last edited by Classic30; 05-13-2008 at 01:12 AM.
Classic30 is offline  
Quote Quick Reply Share with Facebook
post #3 of 18 Old 05-13-2008
ASA and PSIA Instructor
 
Join Date: Apr 2000
Posts: 3,593
Thanks: 7
Thanked 25 Times in 25 Posts
Rep Power: 16
 
I doubt problems with headsails unfurling are due to breaking the furling line, my Furlex has a 3/8" line whos ebreaking strength I exopect is greater than th eother parts of the system. I would think failures are due to th eline being released or failing due to chafe. Chafing would come from repeated wear due to a bad lead, easy to watch for and correct.

Certified...in several regards...
sailingfool is online now  
Quote Quick Reply Share with Facebook
post #4 of 18 Old 05-13-2008
Senior Member
 
trantor12020's Avatar
 
Join Date: Mar 2006
Location: Singapore
Posts: 701
Thanks: 4
Thanked 10 Times in 10 Posts
Rep Power: 10
 
I think the weakest part of the furling line is where it attach to the furling drum by a small screw if I remember correctly. Mine is a Selden Furlex 100S. I always fear that it would come off that way but so far it never did.

Ken
2002 Hunter 326, SV Millennium 2
1999 Macgregor 26X, SV Millennium
trantor12020 is offline  
Quote Quick Reply Share with Facebook
post #5 of 18 Old 05-13-2008
Senior Member
 
Join Date: Apr 2003
Posts: 4,192
Thanks: 50
Thanked 38 Times in 37 Posts
Rep Power: 15
     
Quote:
Originally Posted by trantor12020 View Post
I think the weakest part of the furling line is where it attach to the furling drum by a small screw if I remember correctly. Mine is a Selden Furlex 100S. I always fear that it would come off that way but so far it never did.

It's a good idea to tie the furling line around the drum using a clove hitch before terminating it.

Edit: Also make sure enough line is wrapped on the drum to leave a turn or two both on the drum and around the sail.

Last edited by knothead; 05-13-2008 at 10:42 AM.
knothead is offline  
Quote Quick Reply Share with Facebook
post #6 of 18 Old 05-13-2008
C&C24, Hamilton Harbour
 
Join Date: Nov 2007
Location: Hamilton, Ontario
Posts: 17
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
I have an earlier version of Furlex 100S and the screw connection at the drum gave in on our very first trip after buying the boat - fortunately in lighter winds. Once adjusted properly never re-occured.
Marunio is offline  
Quote Quick Reply Share with Facebook
post #7 of 18 Old 05-13-2008
Thanks Courtney.
 
Join Date: Sep 2006
Location: IL
Posts: 3,954
Thanks: 1
Thanked 1 Time in 1 Post
Rep Power: 11
     
I had ne let go last year, but it was a result of the stress on the line actually ripped the T cleat from the coaming. Luckily the line was still attached to the cleat and the whole thing stopped at the first furling block. The result was more sail let out, but not much. I furl my 145% genny on a Profurl with 1/4 StaySet X

hunter Legend 37 Semper Paratus
Formerly - Tartan 34C Yawl
T34C is offline  
Quote Quick Reply Share with Facebook
post #8 of 18 Old 05-13-2008
Junior Member
 
Join Date: Oct 2001
Posts: 21
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Agree that if you can't furl it's likely the attachment of the line to the drum or another problem with the furler such as worn/ salted bearings, halyard angle at top of furler leading to wraps, undersized furler etc. High tech lines can be more abrasion resistant and certainly have higher working /breaking strength. However, if you need these you're likely winching in your sail at a higher pressure than is safe for the furler or furling line blocks. I once saw a gentleman rip a stancion base out of the deck (likely soft) by winching in the furler.
fishboyneil is offline  
Quote Quick Reply Share with Facebook
post #9 of 18 Old 05-13-2008
ASA and PSIA Instructor
 
Join Date: Apr 2000
Posts: 3,593
Thanks: 7
Thanked 25 Times in 25 Posts
Rep Power: 16
 
Quote:
Originally Posted by Marunio View Post
I have an earlier version of Furlex 100S and the screw connection at the drum gave in on our very first trip after buying the boat - fortunately in lighter winds. Once adjusted properly never re-occured.
Your furling system needs regular checking to see nothing has worked lose. You should have 5 turns still on the unit even when you have your largest sail extended - if you have those turns it really doesn't matter how the end of the line is attached, very little load will reach the end. The Furlex 300 manual recommends starting with 30 turns.

Certified...in several regards...
sailingfool is online now  
Quote Quick Reply Share with Facebook
post #10 of 18 Old 05-13-2008
C&C24, Hamilton Harbour
 
Join Date: Nov 2007
Location: Hamilton, Ontario
Posts: 17
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Quote:
Originally Posted by sailingfool View Post
Your furling system needs regular checking to see nothing has worked lose. You should have 5 turns still on the unit even when you have your largest sail extended - if you have those turns it really doesn't matter how the end of the line is attached, very little load will reach the end. The Furlex 300 manual recommends starting with 30 turns.
SF: Thanks for the tip. It makes perfect sense now. Back then it was overlooked as we rushed to take her home...
Marunio 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
How to make a furling line? MelSnyder Gear & Maintenance 5 06-22-2007 08:13 AM
Getting Good Starts, Part Two Zack Leonard Racing Articles 0 01-15-2004 07:00 PM
Getting Good Starts, Part One Zack Leonard Racing Articles 0 12-18-2003 07:00 PM
Hold That Line Tom Wood Gear and Maintenance Articles 0 10-03-2002 08:00 PM
Using Winches Safely Sue & Larry Gear and Maintenance Articles 0 08-18-2002 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