Braided nylon rope?

snowleopard

snowleopard

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I need to make a halyard from nylon. Before anyone says I'm crazy I need the stretch to take up the movement of the mast flexing. I could use 3-strand but I'd prefer braided as I believe it will perform better with clutches and winches. The problem is that I haven't found a source. Lots of multiplait anchor warp but no straightforward core-and-sheath type. Does it exist?
 
Cant help with the braided nylon source. However, on a Wharram Cat I was planning to use a handy billy device to swage up halyards and then tie the tail off on a cleat and release the handy billy.

Could you use a similar system, for example, wind up tension in a standard halyard with the winch, then use a nylon tail tied onto the halyard at some point with a rolling hitch, then made off to a cleat, then you release the halyard tension from a winch.

Food for thought.
 
How much stretch do you need ?? There is usually too much stretch in braided rope for those of us that dont want it. Equally do you want the mast to flex and the halyard to stretch - I think that would be a bit much?
If you consider a windsurfer mast which flexes to depower in the gusts the sail luff is set up bar tight usually with an 8:1 purchase on the foot.
 
It does or did exist, I had a 12mm. braided nylon anchor warp but I can not recall where I got it. Perhaps it has now been completely replaced by octoplait but it might be worth looking for it in industrial rather than marine applications.
 
Barry Edwards, Ebay trader Boatropes and forumite, does doublebraid nylon. My long shorelines are this material bought from him. He has a very sound reputation and is probably cheaper than almost anyone. His stock is Canadian made.
 
This is for a jib halyard. The mast and fore-boom to which the jib attaches flex independently and a previous setup using a wire stay and conventional furler broke twice from fatigue as a result of regularly being slack then taut. The idea is to keep a fairly constant tension by using a stretchy halyard.
 
snowleopard said:
I need to make a halyard from nylon. Before anyone says I'm crazy I need the stretch to take up the movement of the mast flexing. I could use 3-strand but I'd prefer braided as I believe it will perform better with clutches and winches. The problem is that I haven't found a source. Lots of multiplait anchor warp but no straightforward core-and-sheath type. Does it exist?
Click to expand...

I have a load of 6mm braid-on-braid nylon which I bought from the For Sale forum here a while back. I'm still trying to think of a use for it, but it suggests that what you want (8mm? 10mm?) must exist somewhere.
 
snowleopard said:
This is for a jib halyard. The mast and fore-boom to which the jib attaches flex independently and a previous setup using a wire stay and conventional furler broke twice from fatigue as a result of regularly being slack then taut. The idea is to keep a fairly constant tension by using a stretchy halyard.
Click to expand...

How about using climbing rope? usually very stretchy and 2nd hand often found on ebay - from memory stretches about 12% ?
Slighty out there - looks like 38% ! See(scroll down):- http://cgi.ebay.co.uk/Beal-Flyer-II...s_Climbing_Mountaineering&hash=item2c5c2f9809
 
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PetiteFleur said:
How about using climbing rope? usually very stretchy and 2nd hand often found on ebay - from memory stretches about 12%
Click to expand...

When I was climbing in the 60s we used 1/2" 3-strand but I understand they use thinner stuff doubled these days. The stuff I need now is 12 or 14mm.
 
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PetiteFleur said:
How about using climbing rope? usually very stretchy and 2nd hand often found on ebay - from memory stretches about 12% ?
Slighty out there - looks like 38% ! See(scroll down):- http://cgi.ebay.co.uk/Beal-Flyer-II...s_Climbing_Mountaineering&hash=item2c5c2f9809
Click to expand...

Climbing rope is designed to absorb energy in a fall by yielding - hence the 9 falls limit in that posting, for example? I suspect the OP would not be best pleased with a halyard which had to be replaced after 9 uses ...
 
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