Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 19-07-2007, 18:28   #1
Registered User
Dudeman's Avatar

Join Date: Jun 2007
Location: Gunnison, CO
Boat: Wharram Pahi 31, Oh Be Joyful,
Posts: 42
do i need a halyard lock

Hi I'm new to sailing and I can't get enough of it. I have a Catalina C15 and I was wondering what is the purpose of the halyard lock. I find it is always catching when I'm raising or lowering the sail and was thinking of trying to get rid of it. Any suggestions of why I should or shouldn't do this. cheers
Dudeman is offline   Reply With Quote
Old 19-07-2007, 19:37   #2
Senior Cruiser
delmarrey's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Now in Blaine, WA
Boat: Modified Choate 40
Posts: 10,736
Images: 122
Hey Dude!

If you had a picture of the lock in question I think we here could come up with some ideas for ya.

They say a picture it worth a thousand words..............._/)
delmarrey is offline   Reply With Quote
Old 20-07-2007, 02:34   #3
Moderator Emeritus
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 32,218
Images: 240
Excerpted from the “The Mark Eliot C-15 Cookbook Tuning Guide”:
C-15 ASSOCIATION: C15 National Association Home Page
Click on "Tuning Tips"

"Here is a short list of the tuning options for boat speed. They are in order of importance.

“1. JIB HALYARD LOCK - You need a Jib Halyards Lock to control mast rake and sail shape
2. MAST RAKE - Set mast rake between 23 feet 6 inches and 23 feet 8 ...

Jib Halyard Lock and Mast Rake

These are items 1 and 2 on the list, but because they are directly related I will cover them in the same section. If your boat does not have a jib halyard lock you will need to put one on. Buy a jib halyard, a halyard lock and a shroud adjuster. The jib halyard should be 3/32 inch (or 1/8 inch. but be sure you have the right size lock) stainless wire with a swag Ed loop and thimble at one end, a lock ball 36 inches from the loop and another staged loop with NO thimble at the other end. The total length of the halyard should be 226 inches.

With the mast up lay the boat on its side. Attach a tape measure to the main halyard and pull the tape to the top of the mast, putting the main halyard ball in the lock. Space the jib halyard sheave box away from the mast with washers, otherwise the lock ball on the jib halyard won't be able to pass between the mast and the sheave. You can replace the standard jib halyard sheave box with a bale, twist shackle and wire Harken block. (See the Jib Halyard Lock diagram) This will make it much easier to raise and lower your jib but, of course, it is not a factor in boat speed.

To start, pin the shrouds so that there are 2 open holes between the shroud pin and the chain plate. Attach the jib luff wire to one end of the new shroud adjuster. Use clevis pins and ring-a-dings. Attach the jib halyard to the center of the new shroud adjuster. Stuff the halyard through the jib sheave box and run it to the base of the mast. Pull the halyard tight enough so that the shrouds are snug and tie it off at the base of the mast. Make sure that the forestay is hanging loosely and not carrying ANY load.

To measure the mast rake, use the measuring tape attached to the main halyard and determine the distance from the top of the mast to the top of the transom. Fiddle with the shroud adjusters for both the jib halyard and the shrouds until you get 23 feet 8 inches. At this point the shrouds should be just snug enough so that the mast does not move. Mark the position of the jib halyard lock ball on the mast. Install the jib halyard lock there.

Put the boat upright, Move the shrouds down so that you ABSOLUTELY CAN'T put the jib halyard in the lock by yourself. Have an assistant pull hard on the forestay and you should be able to drop the halyard ball in the lock. If you have a rig tension gauge you should get 300-350 Ibs on the shroud. Measure the rake, same as before, with the tape attached to the main halyard and the main halyard in the lock. The distance to the transom should be 23 feet 6-7 inches. You can fiddle with the shrouds and the adjuster on the jib halyard to get it right.

If you have LONG spreaders, site up the mast track with your eye. mast should have about 1 to 2 inches of bend AFT If not, you need to angle your spreaders further back, this will force your mast to bend more. Once everything is perfect mark the shroud positions on the shroud adjusters with a permanent marker.
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"

GordMay is online now   Reply With Quote


Thread Tools
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
Replacing wire mainsail halyard with line pjfsail Construction, Maintenance & Refit 55 20-12-2016 15:29
Main Halyard - Snap Shackle?? markpj23 Deck hardware: Rigging, Sails & Hoisting 10 07-06-2007 08:42
Genoa halyard chafe NoTies Deck hardware: Rigging, Sails & Hoisting 4 29-12-2006 06:08
main halyard replacement kingfish Construction, Maintenance & Refit 12 23-08-2004 23:23

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 05:43.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.