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22-06-2017, 03:33
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#1
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Moderator
Join Date: Mar 2009
Location: Denmark (Winter), Helsinki (Summer); Cruising the Baltic Sea this year!
Boat: Cutter-Rigged Moody 54
Posts: 33,750
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Furling Line
I'm going to downsize a furling line from 12mm polyester double braid to 10mm racing dyneema double braid.
The reason for this is that the furling line is too bulky and jams in the drum.
In order to make the line easier to handle, I am thinking about changing only that part of the line which goes onto the drum.
What do you deck experts (paging Uncivilized) think about the idea of joining part of the old furling line to a piece of new Dyneema with interlocking eye splices? I want the splice to be as compact as possible so that it will run through the turning block without problems. I am not aware of any other way to join two pieces of unequal size, so if anyone has any other ideas, I'm all ears.
I know it would be slicker to buy a single piece of 12mm and strip the cover, but that will be a lot more expensive, plus the stripped part will be exposed and unprotected from chafe or UV -- I like the idea of a cover on it.
Grateful as always for any tips.
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22-06-2017, 03:55
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#2
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Registered User
Join Date: Sep 2006
Posts: 9,398
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Re: Furling Line
My furling line is 10 mm, and I find it a good size for handling. Can't really say I find the difference between handling that and the 12 mm sheets all that noticeable.
__________________
"You CANNOT be serious!"
John McEnroe
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22-06-2017, 04:19
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#3
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Marine Service Provider
Join Date: Dec 2010
Location: Little Compton, RI
Boat: Cape George 31
Posts: 2,962
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Re: Furling Line
Interlocked eye splices will add a lot of bulk--are your sheaves and fairleads big enough to pass that?
I put 5/16" poly/technora covered dyneema on a Gunboat 66's furlers--surely your furler doesn't put more load on than theirs? Of course, they ONLY furled with the line on an electric winch--I'd hate to have to pull by hand on something as thin as that. But if you also furl with a winch, the cost savings on a thinner line might allow you to have it full-length.
__________________
Ben
zartmancruising.com
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22-06-2017, 04:20
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#4
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Moderator
Join Date: Mar 2009
Location: Denmark (Winter), Helsinki (Summer); Cruising the Baltic Sea this year!
Boat: Cutter-Rigged Moody 54
Posts: 33,750
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Re: Furling Line
Quote:
Originally Posted by 44'cruisingcat
My furling line is 10 mm, and I find it a good size for handling. Can't really say I find the difference between handling that and the 12 mm sheets all that noticeable.
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THanks. Just out of curiosity -- what's the area of your headsail?
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22-06-2017, 04:23
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#5
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Moderator
Join Date: Mar 2009
Location: Denmark (Winter), Helsinki (Summer); Cruising the Baltic Sea this year!
Boat: Cutter-Rigged Moody 54
Posts: 33,750
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Re: Furling Line
Quote:
Originally Posted by Benz
Interlocked eye splices will add a lot of bulk--are your sheaves and fairleads big enough to pass that?
I put 5/16" poly/technora covered dyneema on a Gunboat 66's furlers--surely your furler doesn't put more load on than theirs? Of course, they ONLY furled with the line on an electric winch--I'd hate to have to pull by hand on something as thin as that. But if you also furl with a winch, the cost savings on a thinner line might allow you to have it full-length.
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8mm!! Wow. I can't imagine such a thin furling line.
Yes, I also ONLY furl with an electric winch. It's a big sail and impossible to budge the furling line by hand; and a non-electric winch is a bear.
But "handling" doesn't only mean hauling the line.
Considering the other comments on here, maybe a plain 10mm line would be OK.
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22-06-2017, 04:34
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#6
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Marine Service Provider
Join Date: Dec 2010
Location: Little Compton, RI
Boat: Cape George 31
Posts: 2,962
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Re: Furling Line
Quote:
Originally Posted by Dockhead
8mm!! Wow. I can't imagine such a thin furling line.
Yes, I also ONLY furl with an electric winch. It's a big sail and impossible to budge the furling line by hand; and a non-electric winch is a bear.
But "handling" doesn't only mean hauling the line.
Considering the other comments on here, maybe a plain 10mm line would be OK.
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I will add that Gunboats are notorious for engineering their rigging with almost no margin--they're always breaking stuff, which of course brings more business to people like me. It's a lose-win, but I like it. But if you have the budget for 10mm, that's gonna be safer and nicer.
__________________
Ben
zartmancruising.com
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22-06-2017, 04:45
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#7
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Registered User
Join Date: Sep 2006
Posts: 9,398
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Re: Furling Line
Quote:
Originally Posted by Dockhead
THanks. Just out of curiosity -- what's the area of your headsail?
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Probably a lot smaller than yours, it's about 37 m.
But in reality that's not really the relevant factor. It's really about how well you can grip the furling line, how much effort you can get onto it, and to me, there's very little difference in that regard between 10 and 12 mm line.
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22-06-2017, 04:52
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#8
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Moderator
Join Date: Mar 2009
Location: Denmark (Winter), Helsinki (Summer); Cruising the Baltic Sea this year!
Boat: Cutter-Rigged Moody 54
Posts: 33,750
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Re: Furling Line
Quote:
Originally Posted by Benz
I will add that Gunboats are notorious for engineering their rigging with almost no margin--they're always breaking stuff, which of course brings more business to people like me. It's a lose-win, but I like it. But if you have the budget for 10mm, that's gonna be safer and nicer.
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No 8mm furling lines on my boat!
10mm SK78 racing dyneema is about right I think. Maybe I'll try it without splicing anything.
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22-06-2017, 04:55
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#9
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Moderator
Join Date: Mar 2009
Location: Denmark (Winter), Helsinki (Summer); Cruising the Baltic Sea this year!
Boat: Cutter-Rigged Moody 54
Posts: 33,750
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Re: Furling Line
Quote:
Originally Posted by 44'cruisingcat
Probably a lot smaller than yours, it's about 37 m.
But in reality that's not really the relevant factor. It's really about how well you can grip the furling line, how much effort you can get onto it, and to me, there's very little difference in that regard between 10 and 12 mm line.
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Well, for me it does make quite a bit of difference, if you're heaving the line. Maybe it won't matter here since I never, ever furl anything by hand.
Your boat probably displaces 1/3 what mine does, so that's a pretty big sail. My yankee is 62m2. As I recall, yours is a quite high performance boat.
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22-06-2017, 05:00
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#10
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Registered User
Join Date: Jun 2012
Location: Australia
Boat: Hinckley 49, Evening Star, originally owned by Lawrence Rockefeller
Posts: 282
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Re: Furling Line
Remove the core in the last meter or so, that will fix your problem
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22-06-2017, 05:00
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#11
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Registered User
Join Date: Sep 2006
Posts: 9,398
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Re: Furling Line
I guess if you're never furling by hand, all that really matters is whether or not the line is strong enough, and thick enough for the self tailer to grip?
On our boat I always furl by hand. Sometimes use a winch for reefing though.
__________________
"You CANNOT be serious!"
John McEnroe
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22-06-2017, 05:24
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#12
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Moderator
Join Date: Mar 2009
Location: Denmark (Winter), Helsinki (Summer); Cruising the Baltic Sea this year!
Boat: Cutter-Rigged Moody 54
Posts: 33,750
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Re: Furling Line
Quote:
Originally Posted by Markhunter1097
Remove the core in the last meter or so, that will fix your problem
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An interesting idea. Costing nothing. Maybe I'll give it a shot.
__________________
"You sea! I resign myself to you also . . . . I guess what you mean,
I behold from the beach your crooked inviting fingers,
I believe you refuse to go back without feeling of me;
We must have a turn together . . . . I undress . . . . hurry me out of sight of the land,
Cushion me soft . . . . rock me in billowy drowse,
Dash me with amorous wet . . . . I can repay you."
Walt Whitman
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22-06-2017, 05:26
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#13
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Registered User
Join Date: Mar 2006
Location: Tampa Bay area, USA
Boat: Beneteau First 42
Posts: 3,961
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Re: Furling Line
Perhaps it would be wise to purchase line specifically designed for Furler applications such as Marlow's Grand Prix MGP Series Furler Line. The line is available at several locations in the UK (see Where to Buy).
FWIW...
__________________
"It is not so much for its beauty that the Sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
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22-06-2017, 05:31
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#14
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Writing Full-Time Since 2014
Join Date: Nov 2008
Location: Deale, MD
Boat: PDQ Altair, 32/34
Posts: 9,559
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Re: Furling Line
Quote:
Originally Posted by Dockhead
I'm going to downsize a furling line from 12mm polyester double braid to 10mm racing dyneema double braid.
The reason for this is that the furling line is too bulky and jams in the drum.
In order to make the line easier to handle, I am thinking about changing only that part of the line which goes onto the drum.
What do you deck experts (paging Uncivilized) think about the idea of joining part of the old furling line to a piece of new Dyneema with interlocking eye splices? I want the splice to be as compact as possible so that it will run through the turning block without problems. I am not aware of any other way to join two pieces of unequal size, so if anyone has any other ideas, I'm all ears.
I know it would be slicker to buy a single piece of 12mm and strip the cover, but that will be a lot more expensive, plus the stripped part will be exposed and unprotected from chafe or UV -- I like the idea of a cover on it.
Grateful as always for any tips.
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Polyester and strip the core (not the cover). This is well-proven and works very well. If you want it to last a little longer, coat the striped portion in Maxijacket or RP-25. Then it will wear like iron and better resist UV.
An additional advantage is that the cover lies flat, like webbing, reducing over rides at high loads.
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22-06-2017, 05:34
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#15
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Moderator
Join Date: Mar 2009
Location: Denmark (Winter), Helsinki (Summer); Cruising the Baltic Sea this year!
Boat: Cutter-Rigged Moody 54
Posts: 33,750
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Re: Furling Line
Quote:
Originally Posted by svHyLyte
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That's for CONTINUOUS furling lines - a different application.
__________________
"You sea! I resign myself to you also . . . . I guess what you mean,
I behold from the beach your crooked inviting fingers,
I believe you refuse to go back without feeling of me;
We must have a turn together . . . . I undress . . . . hurry me out of sight of the land,
Cushion me soft . . . . rock me in billowy drowse,
Dash me with amorous wet . . . . I can repay you."
Walt Whitman
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