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03-11-2008
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Wish I never found SN!
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Location: Moreton Bay
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nylon has a 15-18% stretch.
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Simon
Ericson 39B.
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I love my boat
S/V GOODONYA
Brisbane
present location Brisbane Queensland
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Retired YACHT BROKER still a DELIVERY SKIPPER
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03-11-2008
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Owner, Green Bay Packers
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The construction of the line will affect the stretch but you can figure on nylon stretching 33% for a working load and at 40% you're at it's breaking strength in a laid or twisted line. By working load I mean the strain you can exert repeatedly and have it return to it's original length.
Dacron, or polyester line, has better abrasion resistance than nylon and it has about 80% of it's strength but it only stretches a little more than half what nylon does. For about 90% of what you do at sea those are desirable characteristics but not in a rode.
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“Scientists are people who build the Brooklyn Bridge and then buy it.”
Wm. F. Buckley, Jr.
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06-08-2008
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Junior Member
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Location: Ct
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Spectra Jordan Series Drogues
Ace Sailmakers has been producing Spectra Jordan Series Drogues.
Our first Spectra version was for Mr. Dashew's powerboat.
250, two hundred fifty cones on 490' of rode, of which 75' is an integral "leader".
We have built perhaps 15 since then in Spectra. Latest ones for vessels over 40,000 loaded feature tapered ropes, the last section typically 3/8".
A recent Spectra drogue for a 48,000 loaded monohull, with Spectra bridle legs, weighed 29 lbs without weight for end. The nylon version
would have been over 80 lbs.
Lighter, more compact, easier to deploy, a bit easier to recover, more $.
Don is 92 and still working on patent pending inventions. One of which is a wingmast like spar for the headstay. He has built a model for my J-27.
Dave Pelissier
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06-09-2008
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Thanks for the feedback from a fabricator's point of view. I think the concept is very solid if you are, as has been pointed out, actively helming on a run in Greybeard City and want to stay at or below hull speed to avoid a potential broach or worse, a pitch-pole.
Heaving to is a form of "retiring" in the sense that you do everything possible to let the seas and the boat co-operate...to a point. That point is probably where a sea anchor comes in.
What I'm getting at is that it's not an either/or: I can see good reasons to carry both devices, particularly in world cruising, where you never have just one anchor type or one way to make electricity.
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06-09-2008
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Telstar 28
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Dave-
You made my JSD for me two years ago...
The only question I'd have with a Spectra JSD is the loss of the stretch in the JSD and how it affects performance of the drogue.
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Sailingdog
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Telstar 28
New England
You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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06-09-2008
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Interesting point. I gather just the line and bridle itself is Spectra and the drogues are still nylon cones?
Could not the bridle be nylon for stretch and the main drogue line be Spectra for strength? This is similar to the idea of a nylon snubber line for a chain rode.
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06-09-2008
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After seeing this topic crop up multiple times on this forum, and doing my own research, the Jordan Series Drogue seems to me like the end-all-be-all coolest safety gear that an ocean cruiser can have. Based on the literature, I might even prioritize it over an EPIRB. The thing looks friggin cool.
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beej67, Checkered Past, 1980 32' Pearson 323, Panama City FL
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06-09-2008
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Telstar 28
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They are pretty cool...but be aware, they are a royal PITA to retrieve. 
Quote:
Originally Posted by beej67
After seeing this topic crop up multiple times on this forum, and doing my own research, the Jordan Series Drogue seems to me like the end-all-be-all coolest safety gear that an ocean cruiser can have. Based on the literature, I might even prioritize it over an EPIRB. The thing looks friggin cool.
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Sailingdog
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Telstar 28
New England
You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
If you're new to the Sailnet Forums... please read this To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts..
Still—DON'T READ THAT POST AGAIN.
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06-10-2008
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I read somewhere about rigging a block to your bow, and using a line a little over twice the length of your boat, run from an aft winch through the block, back down to the drogue. Pull it up one boat length at a time.
Yeah, does sound like a major pita, but I'd bet it'd be worth it if I was in the !@#$ so much I felt I needed to deploy it.
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beej67, Checkered Past, 1980 32' Pearson 323, Panama City FL
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06-10-2008
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Telstar 28
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Beej-
LOL... You're probably referring to my description of the retrieval process I use, which I posted on Sailnet a while back.
Quote:
Originally Posted by beej67
I read somewhere about rigging a block to your bow, and using a line a little over twice the length of your boat, run from an aft winch through the block, back down to the drogue. Pull it up one boat length at a time.
Yeah, does sound like a major pita, but I'd bet it'd be worth it if I was in the !@#$ so much I felt I needed to deploy it.
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Sailingdog
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Telstar 28
New England
You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
If you're new to the Sailnet Forums... please read this To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts..
Still—DON'T READ THAT POST AGAIN.
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