Initial rig tension - SailNet Community

   Search Sailnet:

 forums  store  

Quick Menu
Boat Reviews  
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Hatches and Portlights
Interior And Galley
Marine Electronics
Other Items
Plumbing and Pumps
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here

Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
Old 10-16-2001
Junior Member
Join Date: Mar 2000
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
captain_jim is on a distinguished road
Initial rig tension

I just stepped the mast on my 1982 Catalina 38. I know that I want to do final rig tuning at sea to ensure that the mast is in column and doesn''t pump too much, but I would like to set up the shrouds at a reasonable tension before going to sea.

The rig is masthead, with upper shrouds running from the masthead through both spreaders, lower shrouds running from the mast just below the upper spreaders through the lower spreaders, and a pair of shrouds on each side that run from the mast just below the lower spreaders to chainplates about 2 feet forward and 2 feet aft of the upper and lower chainplates. The rigging is 5/16".

The middle of the scale on the Loos Pro gauge is 1300 lbs for this size wire. Would that be a good starting point? Should the uppers be set the tightest? If so, how much tighter should these be than the lowers? How tight should the fore-and-aft shrouds be, and do these have a proper name?

If it makes any difference to the answer, I want to pour Spartite before I do my final tuning, and therefore I don''t have the mast blocked at the partners.


Jim in Norfolk
Reply With Quote Share with Facebook
Old 10-16-2001
Join Date: May 2001
Posts: 54
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 14
shipley is on a distinguished road
Initial rig tension

I have also just steped my mast (Irwin 35'' sailboat - masthead rig) and used the Loos Pro system. In general, I have always set the tension between 10 & 15% of the their rated breaking figures despite Loos''s recommendation to go as tight as possible. So in general, I have used the middle of the scale w/o "pumping" problems in 15 to 30 knot winds. Sorry, cant help on the upper shrouds - I''ve never tested it.
Reply With Quote Share with Facebook

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Similar Threads
Thread Thread Starter Forum Replies Last Post
high tension 36?? jeff H pjer Boat Review and Purchase Forum 6 05-27-2012 05:32 PM
Releasing tension on a winched line Jonathan316 Learning to Sail 4 05-06-2004 06:07 PM
chart for rigging tension KenD Gear & Maintenance 0 07-08-2003 08:56 AM
Taking the initial steps.... bdkorth Cruising & Liveaboard Forum 23 02-08-2003 01:25 PM
Shroud Tension john66 Gear & Maintenance 3 09-17-2002 04:56 PM

All times are GMT -4. The time now is 05:52 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) LLC 2000-2012

The store is owned and operated by a company independent of the forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.