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26-05-2018, 10:15
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#1
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Registered User
Join Date: Sep 2014
Boat: Moody 376
Posts: 106
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Main resting against spreaders and shrouds when eased all the way out - problem for c
When we go downwind and ease the main all the way out, parts of the sail are “resting” against the spreaders and the shrouds.
I say resting because it isn’t necessarily rubbing, but if I look up at the sail I can see the impression of the spreaders and shrouds changing the shape of the sail.
We are on a Moody 376 which has spreaders that run perpendicular to the centre line of the boat, so I know that compared to some other boats that have swept back spreaders, we have less of an issue
Nevertheless, what’s the deal with potential chafing of the sail in this situation? Is it better to haul in until there is no contact? Or is it not too much of an issue?
Cheers
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26-05-2018, 10:23
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#2
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Moderator
Join Date: Feb 2010
Location: La Ciudad de la Misión Didacus de Alcalá en Alta California, Virreinato de Nueva España
Boat: Cal 20
Posts: 20,490
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Re: Main resting against spreaders and shrouds when eased all the way out - problem f
For offshore cruising I would put baggywinkle up on the shrouds
OR
A roller on the shrouds at each spreader tip and adhesive sail repair patches over both sides of the sail at all chaffe points.
__________________
Num Me Vexo?
For all of your celestial navigation questions: https://navlist.net/
A house is but a boat so poorly built and so firmly run aground no one would think to try and refloat it.
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26-05-2018, 10:39
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#3
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CLOD
Join Date: Jul 2007
Location: being planted in Jacksonville Fl
Boat: none
Posts: 20,364
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Re: Main resting against spreaders and shrouds when eased all the way out - problem f
I have swept back spreaders and routinely put the main them. My main even has extra wear patches at this contact points. The sail is now 17 y ars and it never has needed any repair to thos areas or the patches a contact the spreaders.
__________________
Don't ask a bunch of unknown forum people if it is OK to do something on YOUR boat. It is your boat, do what you want!
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26-05-2018, 11:16
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#4
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Registered User
Join Date: Dec 2016
Location: Buenos Aires
Boat: SOLD
Posts: 129
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Re: Main resting against spreaders and shrouds when eased all the way out - problem f
Yoo can aviod that by lowering the boom with the boomvang, flattening the main.
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26-05-2018, 12:02
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#5
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֍֎֍֎֍֎֍֎֍֎
Join Date: Apr 2006
Posts: 15,136
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Re: Main resting against spreaders and shrouds when eased all the way out - problem f
Adding chafe patches to the sail, regardless of whatever else you do. Because adding sacrificial patches is always cheaper than suddenly finding you need sail repairs. Either self-adhesive, or just sailcloth and a urethane glue (aqualseal, goop, etc.) as long as you rinse off any salt and dirt and let the main dry off first.
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26-05-2018, 12:22
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#6
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Registered User
Join Date: Sep 2014
Boat: Moody 376
Posts: 106
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Re: Main resting against spreaders and shrouds when eased all the way out - problem f
Thanks for advice. I think patches is the way to go. Will try playing around with the vang to see if that works.
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26-05-2018, 12:42
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#7
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Registered User
Join Date: Jan 2011
Location: Cowichan Bay, BC (Maple Bay Marina)
Posts: 9,704
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Re: Main resting against spreaders and shrouds when eased all the way out - problem f
Quote:
Originally Posted by benzy
Thanks for advice. I think patches is the way to go. Will try playing around with the vang to see if that works.
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I used to sail DDW for the last six miles to get back to my slip on Alameda down the Oakland Estuary for 18 years. Before that 13 years with a C25.
Vang, vang, vang and don't let the main out so much it touches.
I never bothered with patches, the sail is 32 years old and still OK in that regard. Patches wouldn't hurt.
Good question, too.
__________________
Stu Jackson
Catalina 34 #224 (1986) C34IA Secretary
Cowichan Bay, BC, SR/FK, M25, Rocna 10 (22#) (NZ model)
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26-05-2018, 19:06
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#8
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Registered User
Join Date: Mar 2009
Location: Southern Chesapeake Bay
Boat: Norseman 430, Jabberwock
Posts: 1,411
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Re: Main resting against spreaders and shrouds when eased all the way out - problem f
The other advantage of a vang besides reducing the belly of the sail, especially a vang to the rail, is the boom and the sail don't move up and down constantly.
That's where most of the chafing comes from.
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26-05-2018, 19:30
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#9
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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 resting against spreaders and shrouds when eased all the way out - problem f
The vang will reduce the twist in the sail and flatten it out. It probably won't allow you to put the main all the way out though. If I don't want the main to rub on the aft lower shroud on my Pearson 35 can only sheet it out to about a 60%-70% angle boom angle. A bit frustrating when I'd like to have it all the way out going DDW but would rather the save the sail. Could put on patches or baggy wrinkle but the're kind of ughly so just live with the restriction. Boats without an aft lower shroud won't have much of an issue.
__________________
Peter O.
'Ae'a, Pearson 35
'Ms American Pie', Sabre 28 Mark II
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26-05-2018, 21:21
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#10
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Registered User
Join Date: Dec 2016
Location: Buenos Aires
Boat: SOLD
Posts: 129
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Re: Main resting against spreaders and shrouds when eased all the way out - problem f
What you can add to the use of the boomvang is to wrap your spreaders with leather, avoiding chafe without adding patches
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28-05-2018, 11:41
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#11
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Registered User
Join Date: Feb 2016
Location: forest city
Boat: no boat any more
Posts: 2,510
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Re: Main resting against spreaders and shrouds when eased all the way out - problem f
sailed umpteen thousands of miles with main against spreaders (3 tradewind-rtws):
1. vang down as hard as possible,additional "handy billy" to toerail, avoid the slightest movement of boom or sail at all costs
2. split hose on spreader's rear edge
3. chafe patches where seams lie against spreader
__________________
...not all who wander are lost!
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28-05-2018, 17:20
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#12
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Registered User
Join Date: May 2011
Location: Australia
Boat: Jeanneau Sun Odyssey 52.2
Posts: 170
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Re: Main resting against spreaders and shrouds when eased all the way out - problem f
A cruiser with hundreds of thousands of NM more experience than me told me that that's how he does it: Cruising Shute high and well off the mast, and main baggy and resting on spreaders. Don't recall if he had protection on sail/spreader of the Bavaria that he and his family have lived on for a dozen or so years, but I'd assume so.
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02-06-2018, 02:37
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#13
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Marine Service Provider
Join Date: Jun 2012
Location: Sri Lanka
Boat: Laurie Davidson 35
Posts: 394
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Re: Main resting against spreaders and shrouds when eased all the way out - problem f
From a sailmakers perspective, if your doing long distance you are better of wrapping your spreader tips well and making sure the back edge of the spreaders are well rounded - or glue some rubber channel on.
Because if its going to chafe though the sail its sure as anything going to chafe though any light adhesive sailcloth patch material. And are you going to put multiple patches on for all the chafe points at 3 reefing positions?
Racing sails are a different matter as laminates are a lot more prone to chafe so the adhesive patches are needed.
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