tension?? - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > Welcome to Sailnet > SailNet FAQ
 Not a Member? 

SailNet FAQ This forum is specifically on the Sailnet Website and how to do certain things on the website. Please note - any other threads will be deleted.


Reply
 
LinkBack Thread Tools
  #1  
Old 05-10-2011
OtterGreen's Avatar
Senior Member
 
Join Date: May 2011
Posts: 161
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 4
OtterGreen is on a distinguished road
tension??

i have a Santana 2023 that i am trying to find the right rigging tension for. currently it is at 30 (360 lbs) upper and 10 (160 lbs) lower. my friend tuned it up with a loos gauge but no where in my manual does it say what is too tight, too loose.. ive even called WD Schock and even they cant provide me with any info. anyone have some insight?? the mast seems to perfrom great i am just afraid of putting too much pressure on the deck. thanks.
Reply With Quote Share with Facebook
  #2  
Old 05-17-2011
Member
 
Join Date: May 2011
Location: San Francisco
Posts: 82
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 4
sfchallenger is on a distinguished road
Hi OtterGreen

I'm not sure about measurable tension for your rig, I subscribe to the idea that the leeward shrouds should still remain quite taunt when headed to windward during a heavy blow.

Cheers,
h
__________________
Sailing a '74 Challenger 40' Ketch rig out of San Francisco
Reply With Quote Share with Facebook
  #3  
Old 05-17-2011
RichH's Avatar
Senior Member
 
Join Date: Jul 2000
Location: Pennsylvania
Posts: 2,760
Thanks: 9
Thanked 64 Times in 57 Posts
Rep Power: 15
RichH will become famous soon enough
Rig tension is THE important factor in jib/genoa shape. Most all-purpose cruising jibs/genoas are designed for the forestay to be at approx. 15% wire tension when sailing in 15kts. The forestay tension is controlled by adjusting the backstay tension. The 'basic' tension (for sailing in 15kts.) is 15% on the cap shrouds, forestay & backstay; backstay gets higher tension in higher windstrengths.

Set your rig to ~15% tension, then go sailing in 15kts. and SEE how the rig performs. Here's a link that will explain why you need to correlate sail shape with rig tension: MatchingLuffHollow.gif picture by svAquila - Photobucket

For me, 'too tight' is when the boat is over on its ear when on a beat and the loos gage on the backstay goes 'over' 30% .... above 30% the risk of short rigging life due to 'fatigue' become a vulnerability (most common stainless steel begins to rapidly fatigue when at over 30% max. loading when the 'load cycles' are 'repetitive').
:-)

Last edited by RichH; 05-17-2011 at 10:10 PM.
Reply With Quote Share with Facebook
Reply


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
headstay tension kmdudley7 Gear & Maintenance 6 06-26-2009 12:40 PM
Columbia 34 Rig Tension 1970Columbia34 Gear & Maintenance 1 08-13-2007 08:38 PM
Throttle tension Jotun Gear & Maintenance 1 05-12-2007 12:20 PM
Rig Tension Dan Dickison Racing Articles 0 06-24-2002 08:00 PM
Initial rig tension captain_jim Gear & Maintenance 1 10-16-2001 05:26 PM


All times are GMT -4. The time now is 07:06 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) Marine.com LLC 2000-2012

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