failed lock stiching

JTree said:
...I'm not sure why you find it so odd.....tenex tec buries always pull free easy for me.....I mean that is why Whoopie/loopie slings are able to adjust. It doesn't hold tight unless it's under load...
Click to expand...

Here's why I think it's odd-

1- we all agree with what you said- a straight bury will hold rock solid when under a load- even without the stitching

2- even a whipping of inferior quality is way stronger than what would accidentally get yanked out...and even stronger than what the average dude could pull out if he intentionally tried to make it fail by "whoopie adjusting" the splice with all his might.

So in order for what you describe to have happened, it would have required an immense load on JUST the buried leg, while the standing part of the rope would have to be completely slack to allow the buried end of the splice to load the whipping directly.

I can't envision and never have heard of or seen a tree related situation where this unique loading could even happen.

The whipping didn't fail. Something else happened here.

The sling no longer exists?

No better descriptions of what happened?

I'm skeptical.


love
nick
 
Can't we all just get along? :birra: (new smileys on the site now btw)

Nick, I've had a couple of mine do the same thing but mine were all locking brummeled. Once the stitching breaks, rough bark trees will pull it out more, and then any tug in the wrong direction on those very pluckable hollow braid strands will pull the buried tail out. Not necessarily all the way out, but enough for you to notice there's a problem. I feel like if there was a shrink wrap that would stay in place over the stitching it would solve the problem. I've had it happen on whip stitching too.

I'll try Tony's suggestion about tying on the sling. Never even considered that.
 
Nick, the sling exists, I actually plan on reusing the rope.....it isn't that old. I just don't have access to it this very second.

more details I do have:
The sling was about 1.5 weeks old. Again, 3/4" tenex tec. Buried as to spec by the manufacturer's instructions. Lock stitched (not whipped) also per manufacturer's instructions. I used whipping string purchased from knot and rope supply. It's thin stuff. Directly after it came unburied, I continued to hoist it up to me because I wanted to by God know what happened. I mean, I've never had a splice fail, ever. It took time for me to trust my splices and I didn't want to have to relearn how to trust them again. Here is what I saw: the climbing line had been tied directly to the sling by passing a bight through the eye and tied to the leg that was buried right by the bury itself. It was a big eye because it was being used in conjunction with a large aluminum I SC block(the big yellow one). It isn't light. the lock stitching was broken due to abrasion (i assume because it was frayed all the crap. I only found one piece of the stitching and it was only about 6" long. I assume the stitching had already frayed through durring normal operations and the weight of the block pulled the bury out of the tail.

Be skeptical if you'd like. It's a free country, but listed above are the facts. Who knows, maybe all of the exposed lock stitching was busted and so it effectivly wasn't lock stitched at all by the time I hoisted it. IDK. All I know is I almost brained a groundie because the splice pulled apart. A hundred different things could have prevented the near miss and I take full responsibility for not having inspected the splice before the work started. I also could have used locking brummels. What I intend to do is cover both bases and do both (brummels and better, more consistent inspections).

Later tonight I can post pics, but IDK how much it'll show. The rope has been knocking around in my tool box for a while.
 
I too want to get along.

Also.....sink wrap sounds like a winner......and chaff guard.....i need some shrink wrap and chaff guard
 
I've never had to deal with a whipping come undone because I bury the stitching strands under the cover :)

Tree logic, what you're talking about is different though. You're saying the whipping frayed away. That's a monitoring and inspection issue.

My understanding of the OP was that the whipping was fine or mostly fine and got loaded in such a way to cause the entire splice to fail.

If there's a prob with tying the sling by the eye when sending it up, the issue is much larger than the whipping.


love
nick
 
Nick, my bad on the misleading.....i thought i was pretty clear that it was indeed an inspection issue by the original post. I'll try to word it better next time.
 
Well it's an area of the splice that tends to get a lot of abuse. With the looseness of the hollow braid weave I think plucking a lock stitch loose is a lot easier than on a double braid splice. Anyways, I agree that internal stitching would be best and I'll try that in the future. I know you've posted those instructions before Nick. I'll try to find them and link to the thread.
 
I use only locking brummels these days, I use vectran 6mm with an mbs of 3350kgs, I know its only a tiny amount, but its all I need, my other stuff is dyneema 12,500kgs mbs, again with locking brummels, never fails.
 
Jtree, my guess man? You spliced it right and stitched it wrong. It sounds like you used the wrong type of thread (I could be wrong) Or maybe the stitch type...

Either way it is bad luck that the stitches failed, then got tied on the wrong way (which pulled it out). Straight buries are safe, no doubt, just require extra attention. A straight bury is easier to execute in the field especially on things like winch lines etc, or if you have to capture hardware.

I use brummels when possible. Users shouldnt have to differentiate between the MBS of brummels vs straight buries because its marginal, we shouldnt be that close anyway.

Be safe, good luck, come visit, meet our splicers, see our testing...
 
Yeah, that's sort of what I thought. I screwed up the stitching by letting it be exposed to the possibility of fraying with abrasion. I should have had it buried.....also should have used at least ed doubled thread. I may straight bury some things in the future, but it probably won't be a HD sling.

Also bonner, check your PMs
 
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