Rapping off of Spectra Slings?

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.

or

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

Any thoughts?

Zach
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...

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.
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: learningtolead

Re: Rapping off of Spectra Slings? - 03/30/06 03:01 AM

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
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: strat

Re: Rapping off of Spectra Slings? - 03/30/06 01:49 PM

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.
Posted by: Smike

Re: Rapping off of Spectra Slings? - 03/30/06 02:22 PM

Quote:

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




I'll give you $5.25 !
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?
Posted by: talus

Re: Rapping off of Spectra Slings? - 03/30/06 03:28 PM

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




do some good deeds like helping an old lady cross the street or putting leashes on a strangers dog that is running around wild, digging holes at the crag. that's bonifide way to up your net value. also stop glueing quaters to ground & laughing at people that try to pick them up.
Posted by: learningtolead

Re: Rapping off of Spectra Slings? - 03/30/06 04:10 PM

Quote:

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




Maybe that's my problem... I should have said "vintage" instead of "used." Or maybe I should just cut to the chase and say experienced

But my divorce is finally finished and final today so I think my value should definately rise
Posted by: Tai

Re: Rapping off of Spectra Slings? - 03/30/06 08:05 PM

Quote:

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?




Not necessarily.

IIRC, the "Texas Rope Trick" is used by some climbers to rappel off of hanger bolts - that ordinarly are very rappel-unfriendly - without leaving any gear. Perhaps they use nylon slings, but I personally know of a few that use spectra slings; not the Floss, but the standard spectra slings.

T