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prusik cords...everything i want to know
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spacecowboy


Jan 13, 2002, 6:14 PM
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prusik cords...everything i want to know
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I know how to use and make prusiks...but they were on a friends rack, so now i am buying my own.

How long of a cord should I buy, how thick?

What should it be made out of, what's the average price?

Any special kind you would recommend?



camhead


Jan 13, 2002, 6:27 PM
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I have some prussik cord made from about three and a half feet of 5mm spectra cord (I think). I cannot remember exactly how expensive it is, but is under a dollar a foot.
With prussiks you want your cord to be significantly smaller diameter than your rope. As for length, go for longer as opposed to shorter, as double fisherman's knots take up quite a bit of cord.


climber_girl


Jan 13, 2002, 6:28 PM
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well if your just going to use it for repelling kinda (as a brake) then get about a metre, thats all i use mine for and i donlt even use it anymore, one bad experience ruined it, but i have seen other ppl do stuff with it and they have TONS of it, not really sure what they use it for but i guess it works. it i usually really cheap too!


biff


Jan 14, 2002, 9:29 AM
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I use 5mm static cord which costs about $0.97/m (3ft / meter).

I made my purssik cords for the auto brake rappel backup from 1.25m (4 feet) of cord tying the loop with double fisherman knots.

Works great for me and they can be used for more than just auto-brake.


passthepitonspete


Jan 17, 2002, 4:51 PM
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Please CLICK HERE for a lesson on prusiks, and on spelling!

Cheers,

Pete


paulc


Jan 17, 2002, 5:26 PM
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I think I would prefer regular static line for a prusik knot or equivilant. Spectra is made of kevlar and as such has a lower melting point, which doesn't really matter unless you are dragging one rope across another. Hey that's what you do when you rap.

Probably doesn't really matter, but then again regular static is cheaper than spectra too.

Paul

PS Yeah check the link to PTPP's post learning more than the absolute minimum has saved many a persons life. And knowing the absolute minimum has killed many a person.



socialclimber


Jan 18, 2002, 2:07 AM
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Spetcra and Dyneema tend not to hold a knot so well either. 5mm-7mm Nylon ia fine for prussiks.


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