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15-02-2016, 09:29
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#1
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Registered User
Join Date: May 2015
Location: Crystal Beach, FL
Boat: Ericson 27
Posts: 14
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Main Sail Tack Attachment
Removed the behind the mast furler from my refit project and am left with figuring out how to attach the mainsail tack. I'd like to retain the furler goose-neck and mast attachment and make something work with what's left. Any suggestions on how to approach this without removing everything and staring from scratch?
First picture is with the furler removed and the attachments in their original place, second picture I switched things around, thought maybe I could use this setup replacing the L shaped bracket with a bolt to secure the boom. Not sure if the attachment point in this configuration will pivot with a main hoisted, it will with no pressure on it.
Any suggestions?
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15-02-2016, 14:13
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#2
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Moderator
Join Date: Nov 2011
Location: aboard, cruising in Australia
Boat: Sayer 46' Solent rig sloop
Posts: 28,432
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Re: Main Sail Tack Attachment
It seems as if the main, even if it is loose-footed, will chafe on the pivot.
However, I have no engineering expertise, and so, no helpful suggestions to offer. There are a bunch of people who know lots more than me, and maybe they'll chime in, soon.
Ann
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Who scorns the calm has forgotten the storm.
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15-02-2016, 14:44
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#3
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Registered User
Join Date: Jan 2008
Location: Kingston, ON
Boat: Albin Vega 27'
Posts: 530
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Re: Main Sail Tack Attachment
Are you reusing the same main or getting a new one? If getting a new one, the tack set back can be, within limits whatever you want. If you are reusing the same one, the set back will limit your pin placement. You may get away using a shackle through the holes in your current pin and use which ever hole it best aligns with. Also you can get different length shackles.
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Glenn
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15-02-2016, 14:53
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#4
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Moderator Emeritus
Join Date: Aug 2005
Location: Carlsbad, CA
Boat: 1976 Sabre 28-2
Posts: 7,505
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Re: Main Sail Tack Attachment
The slot in the mast is for the sail slugs for a conventional main set up. No need to add a track. Will probably have to cut a gate into the mast/track to load the slugs but that's the way it's normally done. Might have to replace the fitting for the furler with an eye bolt and use a shackle but that hopefully would be just unbolting the furler fitting and substituting the eye bolt. The furler fitting slot looks to be too narrow for the tack of the sail though a shackle may work. Will probably have to modify the tack of the sail to fit the offset of the boom hardware. If you are getting a new main, the sailmaker will handle that.
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Peter O.
'Ae'a, Pearson 35
'Ms American Pie', Sabre 28 Mark II
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16-02-2016, 13:16
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#5
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Registered User
Join Date: Jan 2011
Location: Lake Macquarie
Boat: Farr 1020
Posts: 484
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Re: Main Sail Tack Attachment
in the second picture, yes you can replace the L with a bolt, but...... (always one of these)
Do not use a machine thread, as you do not want the thread itself bearing on something. If you can get the right length blank bolt with a thread on the end so the nut and washer take the entire thread length then that is perfect, otherwise, you will need to go over-length and run a die down there to extend the thread - finally cut off the surplus thread beneath the nut, or fit an eye or similar if that will be useful.
Roger
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16-02-2016, 16:19
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#6
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Registered User
Join Date: Apr 2015
Location: West Coast FLA
Boat: 1978 Pearson 424 Ketch
Posts: 459
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Re: Main Sail Tack Attachment
the second pic looks good with the exception that the hole in the yolk at the tac is a little high. bring it down and the foot of the sail will run straight. wrap the bottom of the tac with leather and that will handle the chafing at the pivot point. I assume that the yolk will turn with the sail? if your running a free footed main then, nothing needs changing from the second pic, with the exception on changing the picot pin to a bold or long clevis pin, for clearance.
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18-02-2016, 14:35
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#7
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Registered User
Join Date: Dec 2008
Location: St. Georges, Bda
Boat: Rhodes Reliant 41ft
Posts: 4,131
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Re: Main Sail Tack Attachment
Cut the bottom 8 or 10 ft of the luff back so that the tack cringle fit to the tack fitting. Add rings to the bottom few slugs in the cutback area, and rig a luff jackline. Blue's works perfectly.
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so many projects--so little time !!
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18-02-2016, 15:07
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#8
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Registered User
Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 20,420
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Re: Main Sail Tack Attachment
The existing main can be modified too - to allow for the new placement of the tack horn/shackle. Roughly USD150 at a local sailmaker.
b.
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