Cruisers Forum
 


Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 14-04-2020, 02:08   #16
Registered User

Join Date: Sep 2014
Location: On the boat
Boat: i make any boat go faster
Posts: 2,276
Re: Main Halyard / Mast head pin

Quote:
Originally Posted by meirriba View Post
The blocks on the sailhead, as supplied by Lagoon, have the option to stop swiveling. Usually it with a smal Allen (hex) key.
i have done first what you suggested and noticed twisting force on block especially when broadreaching.

Additional soft shackle is used between block and sail, to twist and relieves block from these forces.
arsenelupiga is offline   Reply With Quote
Old 14-04-2020, 18:18   #17
Registered User

Join Date: Mar 2014
Location: Oz
Posts: 1,042
Re: Main Halyard / Mast head pin

We removed the shackle and spigot and formed a 5mm dyneema strop between headboard and pulley. This allows the head to rotate about 90 degrees each way, but not allow a 180+ twist, this takes side pressure off the pulley and also has a more dampening effect on the system vs s steel. The only down side to this is that if you need to disconnect the halyard from the mainsail, you have to untie your strop, a shackle would obviously be much quicker. This is why I replaced the topping lift with dyneema, (a) as we use this to go up in the bosuns chair, (b) It can substitute as a main halyard. Some say you should use the main halyard for the bosuns chair, the trouble is that you can not see the condition of the shackle at the top of the mast till you get there.
Bean Counter is offline   Reply With Quote
Old 15-04-2020, 05:36   #18
Registered User

Join Date: Nov 2013
Location: South Africa
Boat: Knysna 500SE
Posts: 196
Re: Main Halyard / Mast head pin

Quote:
Originally Posted by Bean Counter View Post
We removed the shackle and spigot and formed a 5mm dyneema strop between headboard and pulley. This allows the head to rotate about 90 degrees each way, but not allow a 180+ twist, this takes side pressure off the pulley and also has a more dampening effect on the system vs s steel. The only down side to this is that if you need to disconnect the halyard from the mainsail, you have to untie your strop, a shackle would obviously be much quicker. This is why I replaced the topping lift with dyneema, (a) as we use this to go up in the bosuns chair, (b) It can substitute as a main halyard. Some say you should use the main halyard for the bosuns chair, the trouble is that you can not see the condition of the shackle at the top of the mast till you get there.
Great info and also the replacing the topping lift with Dyneema when sailing downwind on a cat with either a code zero or spinnaker you can tension the topping lift, center the boom (without the main up) and tension the main sheet (like crazy) and then you materially reduce the load on your rig as your dyneema topping lift acts like a running back stay.
Lambretta is offline   Reply With Quote
Reply

Tags
halyard, head, mast

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
Main halyard stbd, jib halyard port??"? skipmac Deck hardware: Rigging, Sails & Hoisting 48 15-04-2022 18:31
New used sailboat. 3 sail lines main sail halyard, jib halyard and ??? Mrdouble Monohull Sailboats 10 21-09-2015 13:01
wire main halyard going up the mast shellback Deck hardware: Rigging, Sails & Hoisting 5 19-06-2007 00:57

Advertise Here


All times are GMT -7. The time now is 10:20.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.