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#18934 - 03/28/06 04:42 PM Rapping off of Spectra Slings?
zachres Offline
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Registered: 04/03/03
Posts: 495
Loc: In the midst of a "psychotic b...
This topic came up on another forum... and quickly turned into a bloodbath of an overly-opinionated, under-informed shouting match.

I've heard at least once or twice that rapping with your rope through a Spectra sling is dangerous. I always assumed that this was because of:

1. The low melting point of Spectra, and that a short shift of the rope in either direction could cause enough friction (under load) to start degrading the sling.

2. The limited surface area of the sling presents a greater risk of tangling the rope than is the case with standard, nylon webbing.

or

3. The weave of the Spectra material could actually create a situation in which the fibers would cut the rope.

Any thoughts?

Zach
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#18935 - 03/28/06 05:06 PM Re: Rapping off of Spectra Slings? [Re: zachres]
Mark Heyman Offline
old hand

Registered: 12/23/99
Posts: 1123
Loc: South Jersey (Pinelands)
This topic came up on another forum

rapping with your rope through a Spectra sling is dangerous. I always assumed that this was because of...

Any thoughts?



Sure: rapping with your rope through any sling can be condidered to be dangerous because under load "very little" movement of the rope can cut the sling.

I'm not saying no one has ever gotten away with it - or even that they have not used it commonly.


Edited by Mark Heyman (03/28/06 09:24 PM)

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#18936 - 03/28/06 07:16 PM Re: Rapping off of Spectra Slings? [Re: Mark Heyman]
Mike Rawdon Offline

Carpal Tunnel

Registered: 11/29/99
Posts: 4269
Loc: Poughkeepsie
In my experience (not opinion), the slipperiness of Spectra means that pulling the rope through the sling after you're done produces LESS WEAR than an equivalent size nylon sling.

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#18937 - 03/29/06 08:32 PM Re: Rapping off of Spectra Slings? [Re: Mike Rawdon]
talus Offline
veteran

Registered: 08/23/04
Posts: 1259
Do it do it if you think your life is worth $5.00
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#18938 - 03/30/06 03:01 AM Re: Rapping off of Spectra Slings? [Re: talus]
learningtolead Offline
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Registered: 04/16/02
Posts: 981
Loc: a wanna be kerhonkson-er
Quote:

Do it do it if you think your life is worth $5.00




What should I do if my life isn't worth that much? I put it up on ebay but only got offered 52 cents and my minimum price was $1

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#18939 - 03/30/06 01:47 PM Re: Rapping off of Spectra Slings? [Re: learningtolead]
d-elvis Offline
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Registered: 04/26/00
Posts: 3650
Loc: Central PA
Shoot, I was wondering what the reserve was... I bid the .52
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#18940 - 03/30/06 01:49 PM Re: Rapping off of Spectra Slings? [Re: learningtolead]
strat Offline
Carpal Tunnel

Registered: 04/30/01
Posts: 4242
Quote:

Quote:

Do it do it if you think your life is worth $5.00




What should I do if my life isn't worth that much? I put it up on ebay but only got offered 52 cents and my minimum price was $1




Send the link to the auction- I'll bid $5.00.

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#18941 - 03/30/06 02:22 PM Re: Rapping off of Spectra Slings? [Re: strat]
Smike Offline
Carpal Tunnel

Registered: 05/01/01
Posts: 3143
Loc: in your backyard
Quote:

Send the link to the auction- I'll bid $5.00




I'll give you $5.25 !

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#18942 - 03/30/06 02:38 PM Re: Rapping off of Spectra Slings? [Re: Smike]
MurphysLaw Offline
gumby

Registered: 03/12/02
Posts: 2308
Loc: Hudson Valley, NY
She's a perfectly good token chick climber girl, I'd bid at least $7.50 for onea those, assuming it was in reasonably good condition, relatively low wear, etc.

If she was 'vintage' she'd probably fetch closer to $10
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#18943 - 03/30/06 02:39 PM Re: Rapping off of Spectra Slings? [Re: Smike]
nerdom Offline
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Registered: 09/07/01
Posts: 2483
Loc: Davis Sq., MA
My recollection is that Freedom of the Hills lists rapping through nylon slings as standard procedure. True, the melting point of Spectra is lower than tubular webbing, but if the rope remains stationary (i.e, you rap slowly and carefully), the risk is probably (I said PROBABLY) not too great. I have heard of people top-roping off this set-up (doing so ignorantly after someone else had rappelled), and cutting through. Of course, I'd never use such a sling again after pulling the rope through it! But really, we're generally talking about a situation that would only likely occur when bailing off a long alpine route, right?
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