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Durability of cordage question. (Read 1255 times)

jml11220

Tiro

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Slinging Rocks!

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Durability of cordage question.
Apr 17^th, 2007 at 2:50am

I'm wondering if anyone knows the science of this as opposed to anecdotal evidence. I know if I have one strand of 18# masons line it can hold 18 lbs of weight hung in a stable manner without any kinking knots tied in it. It can also hold 1.8 lbs of weight in a shock load. Now if I take 3 strands it can support 54 lbs of weight or a 5.4 lb shock load. If those same 3 strands are braided they can hold even more than the 54 lbs though.

First, how much more can they hold, and secondly how do you figure on the number?

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Curious Aardvark Forum Moderation Offline Taller than the average Dwarf Posts: 13965 Midlands England Gender:	Re: Durability of cordage question. Reply #1 - Apr 17^th, 2007 at 5:45am Umm, keep adding weight till it snaps. Then work out the calculation. Always much easier if you already have the answer - that equation could then be applied to future briads.
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don1 Descens Offline Take that, you scoundrel! (at dog pooping on grass Posts: 109 Valhalla Gender:	Re: Durability of cordage question. Reply #2 - Apr 17^th, 2007 at 10:05am jml, you could also "google" rope specifications.
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wolf-hound Tiro Offline Slinging Rocks! Posts: 36	Re: Durability of cordage question. Reply #3 - Apr 17^th, 2007 at 10:09am If you want to test it yourself, you can also put a fish scale on the braid/rope/string whatever. Then pull until it breaks(a come-along is handy for this). Be aware of backlash so you don't get whipped, and wear eyeprotection.
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Willeke Interfector Viris Spurii Past Moderator Offline Give me some string and I know what to do. Posts: 2072 Netherlands Gender:	Re: Durability of cordage question. Reply #4 - Apr 17^th, 2007 at 4:30pm I know some people who love questions like this, and have a sensible answer (or three different ones if you are not lucky) you find them on this forum: http://www.igkt.net/sm/index.php Willeke
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