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What happened to the guy with “failed” oplux?

Yeah, Here are the two incidents. I don't know anymore then what is in these threads.

Facebook Fall Part 2

Some more info. He definitely is claiming his Oplux tether broke. See attached.
saddlehunter.com

Saddle Fall

https://content.govdelivery.com/accounts/INDNR/bulletins/2a9a0a5 Just saw this pop up on my Facebook. Happened here in Indiana. "An initial investigation revealed that ropes securing the saddle style tree stand to the tree became loose causing Connor to fall to the ground."
saddlehunter.com
 
raisins said:
If you do a poacher's knot, then it is vital that the working end goes over the standing end before being tucked back under the loop. Otherwise it does not lock itself and it is just internal friction holding it for a time. I believe a scaffold knot (2 wraps), if tied incorrectly in terms of overlap, will often turn itself into a poacher's knot (and still hold) if there is sufficient tag end. This is one reason I always tie scaffold knots (instead of saving 25 cents in rope and making my system 0.25 inches more compact). Also, a lot of people seem to hate tag end for some reason ("little bit of rope, thou dost stick out and offend me!") and want to make them as short as possible.

Everyone should know how to tie these knots correctly but also the ways you can tie one incorrectly.
Click to expand...

I use a correctly tied scaffold knot with a stopper on the tag also. Doesn’t get in the way at all.

5c2f2d8f4c7062344751840fabf669e8.jpg



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It was indeed a failed knot; that's why the poster went silent. I know a moderator who reached out to him and verified the cause.

Anyone that knows anything about Oplux knows that rope is about as incapable of "breaking" as there can be. I've had a really good friend tie Oplux up to his SUV with a Ropeman1 and afterwards a Kong Duck and literally take off from a running start with slack in the rope and apply as hard a static shock to it as he could, and while it severely damaged the rope, it would have held and saved someone's life even after that test. No one is breaking a rope with an MBS of 5,440 lbs.
 
Greg / MO said:
It was indeed a failed knot; that's why the poster went silent. I know a moderator who reached out to him and verified the cause.

Anyone that knows anything about Oplux knows that rope is about as incapable of "breaking" as there can be. I've had a really good friend tie Oplux up to his SUV with a Ropeman1 and afterwards a Kong Duck and literally take off from a running start with slack in the rope and apply as hard a static shock to it as he could, and while it severely damaged the rope, it would have held and saved someone's life even after that test. No one is breaking a rope with an MBS of 5,440 lbs.
Click to expand...

He was running on foot and slammed himself into a static rope like a dog on a leash? Or was he driving a car? Running and having a static rope stop you is....high intensity in the name of science.
 
He hooked the Oplux to a static object (the front of a tractor, if I'm not mistaken...), and then introduced about 5' of slack into the rope before throwing it in reverse (it was a UTV, not an SUV as I stated) and slamming against the rope with both mechanical ascenders in play on back-to-back "pulls" ... Scientific and worthy of TMA testing, maybe it wasn't -- but it did show me and others the tremendous amount of force that rope would take, even with a device biting into its sheath at extreme forces. That rope ain't breaking just with someone leaning against it tethered into a tree. ;)
 
Greg / MO said:
He hooked the Oplux to a static object (the front of a tractor, if I'm not mistaken...), and then introduced about 5' of slack into the rope before throwing it in reverse (it was a UTV, not an SUV as I stated) and slamming against the rope with both mechanical ascenders in play on back-to-back "pulls" ... Scientific and worthy of TMA testing, maybe it wasn't -- but it did show me and others the tremendous amount of force that rope would take, even with a device biting into its sheath at extreme forces. That rope ain't breaking just with someone leaning against it tethered into a tree. ;)
Click to expand...

It’s not the leaning. It’s having a fall of 4 feet on a 2 ft rope, work out of spec gear. It’s the kn generated from such a short static fall that these static ropes just aren’t built for.


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mtsrunner said:
It was his knot. I’m not going to dig through all of the old comments on the post, but IIRC his buddy was in a tree close to him and took a picture before he fell. I can’t remember the exact details, but it wasn’t a scaffold. I do remember that it had a super short tail (like less than 2”.
Most likely scenario was that he tied it and didn’t fully weight the knot. That short tail eventually crept through the knot and set him free.
Click to expand...
There were 2 incidents close to the same time....oplux fail with no real proof and a muddy rope fall that had photos going with it and a SH member (can't remember name) was there in neighboring tree
 
Weldabeast said:
There were 2 incidents close to the same time....oplux fail with no real proof and a muddy rope fall that had photos going with it and a SH member (can't remember name) was there in neighboring tree
Click to expand...

About 8 threads up there are links to both threads


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ShortFuse said:
It’s not the leaning. It’s having a fall of 4 feet on a 2 ft rope, work out of spec gear. It’s the kn generated from such a short static fall that these static ropes just aren’t built for.


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Click to expand...

The reason I used "leaning" is that's what the original guy said he did... just leaned back and the Oplux broke. Which is completely NOT what happened. But he wouldn't have "broke" that rope had he experienced a four-foot fall on a 2-foot tether, either.
 
Greg / MO said:
The reason I used "leaning" is that's what the original guy said he did... just leaned back and the Oplux broke. Which is completely NOT what happened. But he wouldn't have "broke" that rope had he experienced a four-foot fall on a 2-foot tether, either.
Click to expand...

I watched 14kn generated from 180lb man bouncing maybe 4feet on a trick rope. That line is absorbing the energy. Imagine what kind of kn would have been generated if it was a 4’ drop onto a static line.


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Greg / MO said:
The reason I used "leaning" is that's what the original guy said he did... just leaned back and the Oplux broke. Which is completely NOT what happened. But he wouldn't have "broke" that rope had he experienced a four-foot fall on a 2-foot tether, either.
Click to expand...

roperescuetraining.com

Rope Rescue Fall Factors

Fall factors and rescue physics
roperescuetraining.com roperescuetraining.com

165# falling 6 feet on 3 feet of rope = 6kn. With a 10% elongation.

Now imagine being 200# with about 2% elongation oplux. I mean in small math that’s almost 5 times the amount of energy generated if not more.


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DeerLaughAtMe said:
Have you rappelled using a safeguard with each rope when wet?


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Click to expand...

I have rappelled on wet Oplux many times. It’s not ideal, but I’ve never felt that it was dangerous. I switched to the Rescue Tech mid season and can’t remember a time where it got really wet to try it out.
FWIW, I actually prefer the Safeguard/Oplux-Rescue Tech over the Canyon C IV. In other words, if the Canyon was just as light and had the same bulk as the 8mm stuff, I would still choose the 8mm for ease of ride down.
 
Greg / MO said:
The reason I used "leaning" is that's what the original guy said he did... just leaned back and the Oplux broke. Which is completely NOT what happened. But he wouldn't have "broke" that rope had he experienced a four-foot fall on a 2-foot tether, either.
Click to expand...

Does anyone know what just the core and just the sheath will hold with Oplux? If I recall, the sheath is made out a material that is also used for rope cores. I liked thinking that either the core or the sheath could hold me, and I liked that redundancy (but not to rest on it). But maybe I'm wrong here?

I'd think the only reasonable way that an intact looking piece of Oplux could break from our body weight would be if the rope was compromised by soaking in a solvent. Even then, supposed Dyneema (Oplux's core, right?) doesn't react to most things (it's almost like teflon or something in that way).
 
I say knot failure as the sheath or covering makes it harder to hold a knot. I feel anyway. I actually wrap tag end of knot tight with electrical tape to help. Shawn
 
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