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On the rode 24-05-2013 06:32

dyneema/specta lifelines
 
I have to replace the lifelines on my cruising sailboat (no racing) and am considering dyneema or spectra. Do you have any experience with either, and if so, is it positive or negative.

Thank you.

goboatingnow 24-05-2013 06:34

Re: dyneema/specta lifelines
 
Dyneema is the same as Spectra BTW.

Dave

boatsail 24-05-2013 06:54

Re: dyneema/specta lifelines
 
Dyneema lifelines done last year, building my soft shackles for jib this year. Next year all standing rigging. Love the stuff. Easy to work with, no special tools required and relatively cheap. Go for it. Practice your Brummel splice on a small piece a few times to learn it. I have all my knots and spliices down after watching a few videos and practicing.

Go to colligo marine website on the right hand side of page for videos or Google them on YouTube.

boatsail 24-05-2013 06:56

Re: dyneema/specta lifelines
 
What people call stretch is not stretch, but the lime pulling tight. You'll notice the difference in line hardness and diameter after it is used. Plan for that in advance and you'll be fine.

tamicatana 24-05-2013 06:58

Re: dyneema/specta lifelines
 
Love mine, and the Lapworth 36 L-36.com site has some good tutorials, as does Brion Toss briontoss.com

I think Dyneema came from Heaven, and I'm an atheist....

just saw previous post. The term is "constructional stretch" and is the weave nesting up under tension.

Cotemar 24-05-2013 06:58

Re: dyneema/specta lifelines
 
6 Attachment(s)
Maybe these pictures will help.

tamicatana 24-05-2013 07:26

Re: dyneema/specta lifelines
 
If you don't want to mess with thimbles and turnbuckles, simply use trucker's hitch to tension

boatsail 24-05-2013 07:30

Re: dyneema/specta lifelines
 
Quote:

Originally Posted by tamicatana (Post 1243012)
If you don't want to mess with thimbles and turnbuckles, simply use trucker's hitch to tension

Good advice. I used the "proper" buckles at all palces, realized I could have had simpler design that is just as good with 50% less hardware. Very good advice!


compared to the alternatives, this stuff is so fast, easy and cheap and good quality, plus comfortable. I really don't know why people would get metal for lifelines anymore. I actually took my lifelines off over the winter and washed them.

btw. if anyone ever decides to wash lines, daisy chain them or something. dont just throw them in or you will spend like 2 hours drinking beer, watching tv in your basement trying to untangle them prior to hanging them to dry! It did not happen to me, but I could imagine;-)

estarzinger 24-05-2013 07:35

Re: dyneema/specta lifelines
 
article on spectra lifelines

goboatingnow 24-05-2013 07:47

Re: dyneema/specta lifelines
 
Quote:

btw. if anyone ever decides to wash lines, daisy chain them or something. dont just throw them in or you will spend like 2 hours drinking beer, watching tv in your basement trying to untangle them prior to hanging them to dry!
put them in a pillow case in the washer

SVNeko 24-05-2013 07:53

Very informative piece, Evans. Thanks

model 10 24-05-2013 08:23

Re: dyneema/specta lifelines
 
I have been using this set-up for about 5 years now. I have a couple of complaints. If you use lashings at the ends like the some racers do you will have to re-tension several times until the lashings are finally done stretching. The best deal would be to use turnbuckles. The lifelines do show a bit of wear in places so you may need to put a cover over those areas. It ends up looking kinda salty because I use free pieces of cover that don't all match in color.

boatsail 24-05-2013 08:27

Re: dyneema/specta lifelines
 
it does not stretch, more like a chinease finger trap. we just dont get it in a pretightened form and we call it stretching. not to critique, but I just dont want people thinking that the line itself stretches like a rubber band. imagine making a daisy chain of cable. imagine that chain being 20 foot long. put it under tension nd it will become more than 20 foot. you did not actually stretch the cable, but more so tigtened up your knot. Something like that would be better. they call it creep to kind of differentiate it from stretch.

David M 24-05-2013 08:37

Re: dyneema/specta lifelines
 
A sharp object cannot cut through a stainless steel lifeline. Because of that reason alone, I think stainless is more secure.

boatsail 24-05-2013 08:43

Re: dyneema/specta lifelines
 
Quote:

Originally Posted by David M (Post 1243062)
A sharp object cannot cut through a stainless steel lifeline. Because of that reason alone, I think stainless is more secure.

Your point cannot be argued.

The only questions I pose is what object on your body would go between you and a lifeline that would cut through the lifeline while you were being hurled against it?


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