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Spectra or poly double-braid? How to tell?

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Created by QLDCruiser > 9 months ago, 17 Feb 2013
QLDCruiser
QLD, 160 posts
17 Feb 2013 4:17PM
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Is there an easy way to tell whether used rope is spectra or polyester double braid? I have a furling line that needs replacing. It's only 8mm and I suspect it's spectra but how can I tell for sure?

Ramona
NSW, 7758 posts
17 Feb 2013 6:30PM
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QLDCruiser said...

Is there an easy way to tell whether used rope is spectra or polyester double braid? I have a furling line that needs replacing. It's only 8mm and I suspect it's spectra but how can I tell for sure?


Just replace with double braid. Spectra in 8mm is serious over kill. One of our local boating businesses just sells Spectra now, its annoying. Everyone asks for it is their comment. Double braid is better to handle and in 8mm is way over what you need for a furler, strength wise.

crustysailor
VIC, 871 posts
17 Feb 2013 6:52PM
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the double braid will be much more flexible. Spectra (or dyneema) is stiffer when you try coiling it. I'd go for the double braid as well, something thats comfortable to hold.

Jethrow
NSW, 1282 posts
18 Feb 2013 8:30AM
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If you can burn the core at one end, spectra will flare out and expand more than double braid.

rumblefish
TAS, 824 posts
18 Feb 2013 4:50PM
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Jethrow said...
If you can burn the core at one end, spectra will flare out and expand more than double braid.


This plus douple braids core and cover will stick to easch other when burnt, spectra's will jot.

As said above, just go double braid for a furling line.

QLDCruiser
QLD, 160 posts
19 Feb 2013 10:28AM
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Thanks Rumblefish and Jethrow - I just have to wait until things dry out before doing the experiment! Still raining here now though. But it will be academic anyway, I've been convinced to just go double braid for about 1/4 the price.

PhilY
NSW, 158 posts
28 Feb 2013 3:59PM
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Do not use ordinary double braid core on a furling line. You will then sail with a half furled headsail and use a winch to tighten the headsail sheet.

1:1 furling line that's smaller in size than the heady sheet, the furling line will give especially since it cops more sun/UV than any other line on the boat.

Use a Dyneema core - please.



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"Spectra or poly double-braid? How to tell?" started by QLDCruiser