A Tale of Two Sheet Bends | The Left-Hand Sheet Bend vs. The Right-Hand Sheet Bend
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- Опубліковано 1 жов 2024
- We go down the Sheet Bend Rabbit Hole to examine the left- and right- hand sheet bends.
We explore the differences between the sheet bend and the left-handed sheet bend, their relationship to the bowline and the left-handed bowline (AKA Cowboy bowline, or Dutch bowline), respectively, and look into some of the history & research available on the two knots.
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Šimon, J., V. Dekýš, and P. Palcek. "Revision of Commonly Used Loop Knots Efficiencies." Acta Physica Polonica, A. 138.3 (2020). www.academia.e...
Referenced Internation Guild of Knot Tyers Forum post: forum.igkt.net...
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I've been down this rabbit hole you speak of :) The weakness of this knot, in all it variations, is that if it subjected to a "bouncy load", where it is repeated loaded and unloaded, the nipping loop widening then restricting over and over again, then the tail end can make its way out of the nipping loop. The tests I've seen don't simulate this type of real-life conditions. Now for a left handed sheet bend, this failure can happen more easily than a "correct" sheet bend due to the position of the tail end in the nipping loop. Ashley is right. Now If you hold the bowline by the side of the loop that is right under the tail end, and bounce repeatedly against the standing end, then the cowboy bowline is exactly like a left-handed sheet bend, and it comes apart more easily than the regular bowline. But if loaded "normally", by the loop, then the two don't have a difference. Finally, the cowboy bowline is distinctly superior than the regular bowline for cross-loading, but if you're really expecting possible cross-loading, both of them are pretty bad and can result in sudden catastrophic failure . To prevent this, you could tie an "anti-bowline" (a cossack loop or an eskimo bowline) instead. Now this is another rabbit hole - those rely on the same knot, just oriented differently.
Welp, there you are, you're saying the opposite of what I'm saying. I won't argue, because I didn't do extensive testing. Although in a bouncy situation, a sheet bend must always be backed up with a couple of hitches, and then it won't loosen regardless.
Hi@@someotherdude , I guess I'm agreeing with some points but not others. There was a point in the video where you quote someone stating that the left-hand (cowboy) bowline is just as secure as the regular bowline for "jerky" loads, and backs it up with a scientific-looking test. That's the one point I disagree with, or rather let's call me unconvinced :) But overall, it probably doesn't matter because as you said, regardless of how you tie it it's not going to be a very secure knot for bouncy loads, and you'll need to back it up.
@@stephanddd whoops you missunderstood in a minor way, I was saying left hand vs. right hand only for sheet bends, not for bowlines. I didn't get into bowlines, I hope I didn't type that by accident.
Yeah I tested it again this morning (just informal, sitting around on the couch with scrap ropes) and I really think tying so tag ends are on opposite sides, the knot settles down more compactly when you tighten it, and it 'looks' more secure and better. It's subtle and hard to describe why. But if you wander the internet, I'd say the question is NOT settled, there are very convincing posts on either side of the argument.
It's a very good thing to know 5 or 6 basic knots, at leas a bowline, clove hitch, and sheet bend are a good thing to know all thru life. Very handy.
Teaching someone a bowline for the very first time, it's very satisfying when the lightbulb goes off and they're like 'wow' and they get it, they realize how much better it is than the tangled nightmares they've previously been frustrated with. Why do people say my comments are too long? I think they're just jealous of my knots.
@@someotherdudeyour comments are not too long, the people reading them are too short. In addition to the basic knots, some random weird knots are also fun to know. I nominate the Zombie hitch (aka Transport hitch) as the weirdest and most entertaining rope trick that I know.
👍🏻 The YT channel, HowNOT2, stress tests knots and cordage - they might compare these if they haven't already done so.
youtube.com/@HowNOT2
Thanks for looking into this brother. I am OCD about tying knot correctly. this was an eye opener as I have been tying this incorrectly as well. Thank you!
...but yet you leave grammatical errors in your posts?? You're an OCD Poseur! Fake!😁
2 things that you knotzies keep perpetuating, and it's wrong: First, far too many knot illustrations fail to clearly show which is the load end of the rope vs. the knot end; second, I'd worry any time you see a sheet bend illustration with ropes of similar thickness. Sheet bends are 'resorted to' when one is forced into trying to join 2 ropes of very unequal diameter, with larger rope being very difficult to knot and it would use too much length to do so anyway. That is the situation in which to use a sheet bend.
In my own informal testing, I've found that the 'left hand' sheet bend works better- that is, not a traditional sheet bend where the tag ends (knot ends) are on the same side of the centerline, but rather on opposite sides.
"knotzies" 😂
@@thetautline I thought it was clever.... but generally people hate my comments, so thanks!
Thank you for this. I may have been one of those who challenged the other video.
I prefer the "simple-simon-under" .... it's tied using a similar path as the sheet bend
I saw the comments on your short and was going to reply that I had actually heard the left-handed sheet bend was better. Thanks for your research! My takeaway is that so far nobody has proven there to be enough difference to make a difference.
maybe the best answer is 'it depends on the specific lines used'.