Cruisers Forum
 


Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 14-01-2021, 13:37   #1
Registered User
 
mark0978's Avatar

Join Date: Aug 2012
Location: Huntsville, AL
Boat: Catalina 25
Posts: 74
Jackline keeps spinning round and round

When I lower the jackline to work on something, pulling it back up is almost impossible. because it starts twisting, the causes the first line split (where the first ring is joined to the line that goes up the mast spins. This causes the line passing thru that ring to twist around each other and lock things into place so that I just can't haul the line up anymore.

This is a new trick, and it seems to vary depending on things I try to do, pre-twist it the other direction has been the most fruitful thing I've tried, putting a swivel on the rope so it could spin in place (it won't spin before the rope is twisted :-(

What is causing this and how do I stop it?
mark0978 is offline   Reply With Quote
Old 14-01-2021, 13:41   #2
Registered User

Join Date: Nov 2015
Location: Currently in Hawaii
Boat: Cooper 416
Posts: 649
Re: Jackline keeps spinning round and round

I suspect you are referring to lazy jacks.

Are these Harkin lazy jacks, or some other company, or are they homemade?

Do you have a diagram?

What type of line are you using?
__________________
-----------------------------------------------
Quests Of Discovery
Discovery 15797 is offline   Reply With Quote
Old 14-01-2021, 15:20   #3
Registered User

Join Date: Mar 2011
Location: Southport CT
Boat: J/36
Posts: 1,657
Re: Jackline keeps spinning round and round

Are you using twisted nylon line? I had major problems with twisted nylon line doing this in a hoisting setup for lifting kayaks in the garage. Swivels helped but did not solve the problem. Braided line might be less prone to twisting.
psk125 is offline   Reply With Quote
Old 14-01-2021, 15:45   #4
Registered User
 
zboss's Avatar

Join Date: Sep 2011
Location: On a boat
Boat: 1987 Cabo Rico 38 #117 (sold) & 2008 Manta 42 #124
Posts: 4,140
Re: Jackline keeps spinning round and round

Our first set of jacklines were made of dyneema - no twisting whatsoever.
zboss is offline   Reply With Quote
Old 14-01-2021, 18:03   #5
Moderator
 
JPA Cate's Avatar

Join Date: Nov 2011
Location: aboard, cruising in Australia
Boat: Sayer 46' Solent rig sloop
Posts: 20,682
Re: Jackline keeps spinning round and round

Ours are double braid, no twisting with it, either. If you're using 3 strand, consider replacing with lifeline lacing, or maybe 1/4" venetian blind cord.
__________________
Who scorns the calm has forgotten the storm.
JPA Cate is offline   Reply With Quote
Old 15-01-2021, 11:35   #6
Moderator
 
roverhi's Avatar

Join Date: Aug 2005
Location: Kona, Hawaii, Carlsbad, CA
Boat: 1969 Pearson 35 #108 & 1976 Sabre 28
Posts: 7,354
Send a message via Yahoo to roverhi
Re: Jackline keeps spinning round and round

Remove one end, undo the twist and put it back together. Repeat till it doesn't twist anymore. Used dacron double braid for mine and had minor twist that went away when i did the above.
__________________
Peter O.
'Ae'a, Pearson 35
'Ms American Pie', Sabre 28 Mark II
roverhi is offline   Reply With Quote
Old 15-01-2021, 13:17   #7
Registered User

Join Date: Nov 2011
Location: Barry, South Wales
Boat: Westerly Konsort 29'
Posts: 41
Re: Jackline keeps spinning round and round

I prefer tape. It does not roll you into the drink when you step on it. But bring it below if you are not sailing the boat for a while because the UV does not improve it.
RogerLloyd is offline   Reply With Quote
Old 15-01-2021, 14:28   #8
Registered User

Join Date: Dec 2014
Location: Lake Macquarie, NSW, Australia
Boat: Beneteau Oceanis 45
Posts: 33
Re: Jackline keeps spinning round and round

I feel sure you must be using twisted line. I had this problem at our yacht club when I was the flag officer. Someone previously had used twisted line for the halyards on the flag poles. I found they would twist if I put any reverse tension on to control the flag/pennant as I hoisted. Solution double braid. The swivels would not stop the twist as they wouldn’t rotate when loaded.
Like others I’m not familiar with the term “jack line”. I know of jack stays or lazy jacks.
philcun50 is offline   Reply With Quote
Old 15-01-2021, 14:54   #9
Registered User

Join Date: Nov 2011
Location: Barry, South Wales
Boat: Westerly Konsort 29'
Posts: 41
Re: Jackline keeps spinning round and round

American "jackline" = British "jackstay".
Lazy jacks are something else.
RogerLloyd is offline   Reply With Quote
Old 15-01-2021, 15:24   #10
Marine Service Provider

Join Date: Sep 2008
Location: Victoria B.C.
Boat: CS27
Posts: 2,524
Re: Jackline keeps spinning round and round

I don't think the confusion above will end until the op states exactly what he is referring to -

Lazyjacks which are attacked to mast and boom to tame the mainsail when raising and lowering it.

or

Jacklines which are attached to fore and aft sections of deck to clip a harness to so you do not go overboard when traversing the deck.
mitiempo is offline   Reply With Quote
Old 15-01-2021, 15:48   #11
Registered User

Join Date: Nov 2015
Location: Currently in Hawaii
Boat: Cooper 416
Posts: 649
Re: Jackline keeps spinning round and round

I've never seen a jackline (or jackstay) that "goes up the mast."

Why don't we wait for the OP to clarify?
__________________
-----------------------------------------------
Quests Of Discovery
Discovery 15797 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Jackline and Markel American Insurance B4A Dollars & Cents 7 17-10-2020 07:15
IMIS Jackline and Hurricane Box seanicroute Dollars & Cents 3 27-08-2018 13:09
Shaft Keeps Spinning Maddog Engines and Propulsion Systems 20 14-04-2010 16:10
Jackline webbing - color & strength? bstreep Health, Safety & Related Gear 51 08-11-2008 10:02
Help looking for Jackline - windup device sauve Health, Safety & Related Gear 3 07-11-2008 09:30

Advertise Here


All times are GMT -7. The time now is 18:29.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.