Posted by: zachres
Rapping off of Spectra Slings? - 03/28/06 04:42 PM
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.
3. The weave of the Spectra material could actually create a situation in which the fibers would cut the rope.
Posted by: Mark Heyman
Re: Rapping off of Spectra Slings? - 03/28/06 05:06 PM
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...
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.
Posted by: Mike Rawdon
Re: Rapping off of Spectra Slings? - 03/28/06 07:16 PM
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.
Posted by: talus
Re: Rapping off of Spectra Slings? - 03/29/06 08:32 PM
Do it do it if you think your life is worth $5.00
Posted by: d-elvis
Re: Rapping off of Spectra Slings? - 03/30/06 01:47 PM
Shoot, I was wondering what the reserve was... I bid the .52
Posted by: MurphysLaw
Re: Rapping off of Spectra Slings? - 03/30/06 02:38 PM
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
Posted by: nerdom
Re: Rapping off of Spectra Slings? - 03/30/06 02:39 PM
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?