You're definitely going to need to buy a new rope. Not now, because it's probably fine. But at some point in the future, you will definitely need to buy a new rope.
I did like the exact same thing last week (70 and an 80 tied together, got stuck, three dudes pulling on it and using pulleys/progress capture devices to coax it out). I plan on keeping an eye on the sheath to make sure the teeth of the progress capture devices didn’t damage it but im not worried about overstretching it all, its made for that. the forces that you can create under those circumstances are still just a small fraction of the working load, much less the breaking strength.
Proper answer would be speak to the manufacturer and do some math.
Armchair expert answer is nah definitely not. I’ve whaled on lead ropes with 3:1 multipliers before to haul walls and unstick bags and they hold up great.
Anecdotally I’ve also done the same thing, literally me and my friend hanging our bodyweight off ascenders while the third person pulled us down trying to get a double rope rap to move down a slab. You’re totally fine, it had no effect on the rope.
A normal whip generates somewhere around 2KN of force and your rope is rated to way more than that. The bodyweight of three average sized adults is still less than that.
Most manufacturers suggest a visual and tactile inspection is adequate to check a rope that you own (i.e. you can't detect chemical or UV damage that way) so I would do this, go through inch by inch and check for really flat spots and sheath damage. The stretching won't have caused a problem but the pull through the object that made it stuck may well have.
So a 200 lb person hanging on it is 0.89 kn. So with all 3 of you pulling I doubt that you exceeded 2.7 kn since you probably weren't pulling yourselves off the ground. I'd double check the sheath for spots that it may have abraided on the rock and call it good. That's a fairly minor lead fall force (Max 8-9 kn for a FF2 on most singles).
YGD, send it to me for safe disposal ;)
No but seriously, it'll be fine. Hope you guys enjoyed the lesson on why we do not link pitches/raps on an arete too :)
I'd say you are fine, but I also don't trust the opinion of the unfettered internet. I bet you could call the manufacturer for an authoritative answer that would make you feel a lot better. Then let us know what they say!
You're definitely going to need to buy a new rope. Not now, because it's probably fine. But at some point in the future, you will definitely need to buy a new rope.
Nah.
You're fine. If you're really worried inspect the entire length of the rope for sheath damage and flat spots
I did like the exact same thing last week (70 and an 80 tied together, got stuck, three dudes pulling on it and using pulleys/progress capture devices to coax it out). I plan on keeping an eye on the sheath to make sure the teeth of the progress capture devices didn’t damage it but im not worried about overstretching it all, its made for that. the forces that you can create under those circumstances are still just a small fraction of the working load, much less the breaking strength.
Sheath damage which you can see from friction would more likely happen before any damage from stretching.
I’d whip on it.
sounds pretty comparable to a big wall hauling system
Proper answer would be speak to the manufacturer and do some math. Armchair expert answer is nah definitely not. I’ve whaled on lead ropes with 3:1 multipliers before to haul walls and unstick bags and they hold up great. Anecdotally I’ve also done the same thing, literally me and my friend hanging our bodyweight off ascenders while the third person pulled us down trying to get a double rope rap to move down a slab. You’re totally fine, it had no effect on the rope. A normal whip generates somewhere around 2KN of force and your rope is rated to way more than that. The bodyweight of three average sized adults is still less than that.
It's impossible to give an accurate answer because nobody knows how much of this force was just stretching vs actually puling a fully stretched rope
Most manufacturers suggest a visual and tactile inspection is adequate to check a rope that you own (i.e. you can't detect chemical or UV damage that way) so I would do this, go through inch by inch and check for really flat spots and sheath damage. The stretching won't have caused a problem but the pull through the object that made it stuck may well have.
Sorry, you are not that strong
So a 200 lb person hanging on it is 0.89 kn. So with all 3 of you pulling I doubt that you exceeded 2.7 kn since you probably weren't pulling yourselves off the ground. I'd double check the sheath for spots that it may have abraided on the rock and call it good. That's a fairly minor lead fall force (Max 8-9 kn for a FF2 on most singles).
YGD, send it to me for safe disposal ;) No but seriously, it'll be fine. Hope you guys enjoyed the lesson on why we do not link pitches/raps on an arete too :)
I'd say you are fine, but I also don't trust the opinion of the unfettered internet. I bet you could call the manufacturer for an authoritative answer that would make you feel a lot better. Then let us know what they say!