Rigging stupid question # ??I stoped counting - Page 2 - SailNet Community
LinkBack Thread Tools
post #11 of 18 Old 03-11-2010
Junior Member
Join Date: Mar 2009
Location: Saskatchewan Can.
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
If you have a B&R rig you can google it. You will find how to tune it. If it's not a B&R rig and you know what kind of rig it is you might find some info on line.

Good luck
Hunterdon31 is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
post #12 of 18 Old 03-11-2010
Senior Member
mitiempo's Avatar
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,600
Thanks: 0
Thanked 101 Times in 92 Posts
Rep Power: 9
It is okay to take some slack out of the lowers when sailing. A turn at a time. You want them just tight enough that the leeward lowers don't flop around. Use a wrench on the outside of the turnbuckle and not in the slot. After, as was posted, be sure to lock them.

Living aboard in Victoria Harbour
mitiempo is offline  
Quote Quick Reply Share with Facebook
post #13 of 18 Old 03-11-2010
Senior Member
tager's Avatar
Join Date: Nov 2008
Posts: 991
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
Just tight enough so that they aren't flopping in the lee. If your deck, hull, spar and rig just don't have the stiffness for this, then you can put shock cord or nylon around each shroud just to decrease the shock loads and work hardening of flopping around.

Flopping is bad because the load spikes dynamically. When you maintain some tension on the rig, the elasticity of the steel stops these load spikes from occurring. Cyclic loading is especially bad on stainless steel as it causes work hardening.
tager is offline  
Quote Quick Reply Share with Facebook
post #14 of 18 Old 03-11-2010
Junior Member
Join Date: Nov 2009
Location: Denmark
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
I agree - there should be no slack in the leeward shrouds. Usually rigs dont have enough tension, and thats probably true in this case also.

Seldén Mast AB

Here is a link to a very good rig tuning guide that covers many different rig types (including the B&R), a step by step tuning guide, a guides to how you measure shroud tension without a loos gauge.
Happy tuning
sapster77 is offline  
Quote Quick Reply Share with Facebook
post #15 of 18 Old 03-11-2010
Just another Moderator
Faster's Avatar
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 16,985
Thanks: 113
Thanked 355 Times in 335 Posts
Rep Power: 10
Setting up your shrouds on a nice 10 knot day works well... but you should only adjust a shroud that's not loaded.

So you need to set up on a particular tack, observe the mast and determine if it's sagging at the spreaders or falling off above.. mid mast sag means your lowers are loose, the top falling off may mean the cap shrouds should come in or, possibly the lower is too tight, pulling the mid mast to windward. In any event decide which shroud adjustment is required but don't do it yet..

Now tack to the opposite tack and adjust the shrouds you just checked as you think best. At the same time observe the mast on the new tack and make the same sort of decision. Tack back, observe the effects and maybe make adjustments on the other side at the same time.

You'll need to go back and forth on this until it looks right on both tacks and you leeward shroulds (at 10 knots) are not sloppy. Keep in mind that you want to keep the masthead centered so large adjustments to the cap shrouds may upset your initial setup of that.

Hunter, btw, with their severely swept spreaders may well recommend that the rig be tight enough that the leeward shrouds do not go slack in even the higher wind strengths. I've seen documentation recently from Selden maintaining that with swept spreaders overall rig tension should be higher, and that the lowers or diagonals should be set last and you need to keep in mind that over-tightening lowers/diagonals will straighten the mast, affecting any desired prebend.


1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
Faster is offline  
Quote Quick Reply Share with Facebook
post #16 of 18 Old 03-11-2010
Senior Member
Join Date: Dec 2008
Location: North Carolina
Posts: 657
Thanks: 0
Thanked 14 Times in 10 Posts
Rep Power: 7
Do you really get shock loading when tacking if your leeward shrouds have some slack? If they are reasonably tight at the pier, then the loading has caused some elongation/deflection in the windward shrouds/mast/hull, and when you tack, as the load is taken off one side and applied to the other, there should be a smooth transition because of the elongation/spring effect of the system. If the shrouds are floppy loose at the pier, I could se a real shock problem. If you've had a competant rigger look at it, you should be ok (you might discuss with him what you have experienced with loose leeward shrouds).
NCC320 is offline  
Quote Quick Reply Share with Facebook
post #17 of 18 Old 03-11-2010
Not A Real Member
Grumpymx's Avatar
Join Date: Nov 2007
Location: Pacific
Posts: 32
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
I have a masthead, keel stepped, single spreader, low aspect ratio mast on an old islander. I too had also tried to find the solution to "the mysterious mast and rig tuning" questions by asking professional riggers and long time sailors.
Everybody had a different answer because in the end everybody had experience tuning different boats. So here is mine:

The three riggers I used the first few years were nice guys, and set the rig rather loose each time. I have come to the conclusion riggers see my old boat, do not want to break anything, so everything is a bit loose and they say things like "your not planning on racing anyway, right?" (Little do they know)

After that the light bulb went on and I realized that part of sailing is tuning the rig on your boat the way that works best for you and the boat.

The advise given above is always correct for the boats that the poster is talking about. I would just like to add that having a Loos gauge is a must. As no matter how hard I tried to get tension to match on both sides by counting turns or feel that really only got me within 100-150 lbs off.
Which normally meant I pointed a little higher on one tack then the other.

So I use the Loos and I listen to the boat...
The upper stays are always tight (preloaded to 12% or 1000lbs on oversize wire)
If my lower stays are too loose the mast pumps at the dock in higher winds.
I make the forward lowers a bit tighter then the aft lowers .
If I make some adjustments while acting younger then my age in big winds and the lowers are a little too tight I can't close the head door without it catching on the frame. Which reminds me I should go back off the lowers and that both me and my boat are too old to have this much fun.

I hope you do too..

Last edited by Grumpymx; 03-11-2010 at 10:31 PM. Reason: uppers
Grumpymx is offline  
Quote Quick Reply Share with Facebook
post #18 of 18 Old 03-11-2010
Handsome devil
Stillraining's Avatar
Join Date: Jan 2008
Location: LaConner,Washington
Posts: 3,477
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 10
Sailing fool and Fasters' method is right on IMHO...And in Brian Tosses Humble opinion as well..One of the premier riggers in the US.

According to his Rigging DVD which I have, there should be Zero flop and no slackness either...Just a noticeable difference in tension.

Oh...And he says you absolutely have to fine tune it under sail...everything else is just a guess.....Even the gage.

FWIW there could be other issues as well such as hull/deck deformation under load which will need to be addressed...I have talked about this in other threads and what Im doing about it on my boat.

"Go Simple...Go Large"

Relationships are everything to me..everything else in life are just tools to enhance them.

The purchase price of a boat is just the admittance fee to the dance...you still have to spend money on the girl...so court one with something going for her with pleasing and desirable character traits others desire as well... or you could find yourself in a disillusioned relationship contemplating an expensive divorce.

Last edited by Stillraining; 03-11-2010 at 11:25 PM.
Stillraining is offline  
Quote Quick Reply Share with Facebook

Quick Reply

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Forum Replies Last Post
Stupid Question krozet Boat Review and Purchase Forum 15 10-11-2009 12:30 PM
rigging question drlizard Gear & Maintenance 7 02-22-2006 12:28 PM
Standing Rigging Basics Mark Matthews Racing Articles 0 08-29-2004 09:00 PM
Replacing Your Standing Rigging Mark Matthews Gear and Maintenance Articles 0 12-15-2002 08:00 PM
Another rigging question sailorman_10 Gear & Maintenance 3 05-21-2002 09:40 AM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome