How bad are knots in Dyneema? 

EPIRB ????????????? Why do people act like or assume that any string of letters used as an abbreviation for some thing or process is immediately understandable by everyone or anyone that might read their post???? Your comment is meaningless to anyone who is not "initiated" into your 'club'/'cult'/'gang'. I've watch dozens of How NOT 2 videos and never saw/heard this epirb used or defined. So WTF??

I don't think they are rappelling on the 3mm, but rather using it to make a rappel anchor so they can retrieve their climbing rope. At least that was my assumption based on what he read.

Maybe, but at 1.02 Ryan talks about being able to get enough friction to stop sliding right down the rope. In any event, I’d still opt for a heavier load 😊

I have pulled doublestrand 1/8" amsteel 80' through a supermunter on an attache carabiner, 250 lbs average for to 3 seconds it took. When the simulated rap stopped, I brought the load up and the hot biner sat with unmoving amsteel at 400 lbs tension for 100s. No melting

you'd be surprised 😂

@@zoladkow I am surprised!

Similar material, not the same. They are produced by different companies.

@@CanyoneeringUSA most people use "same material" to mean rough composition not manufacture.

i was about to ask the same question, with the same example 😄

Double loop/Super 8 seems to hold better than figure 8 in dyneema too

Source? I think it's more like 70-80C.

It could be good to use as a pull cord if you tie a blocker knot at the rappel station and use the entire length of a normal rope, then pull it down with the pull cord. I just wouldn't willy nilly be rappelling on something so tiny all on it's own.

Bail gear, the idea is that it weighs little enough to justify bringing, and could save you if you've got no better options. There are ways even with a grirgi to add a ton of friction. Might work in something like this. Idk if I'd use it

This is my sub channel where I post quickies, my main channel we do more testing and try to be more thorough. We were just curious if 3mm would break below 1kN which it didn't and we chased the rabbit to see what the other diameters would do. You assume this is the only test I've ever done. I've done thousands to know we weren't getting an outlier and try to make these short and sweet. I also give the disclaimer that 1 test isn't a full picture. Chill out.

How about you donate a couple hundred to finance these samples? Do you even know how expensive these materials are? Be a little thankful for what you get for free.

All science is anecdotal, some is just really high quality anecdotal. The tests proved a very useful “x can break at y kN”

@@HowNOT2 Again chasing a rabbit down a hole means to follow a path that leads you into confusing, disorienting and illogical situations, just like Alice (I assume you HAVE heard of "Alice in Wonderland"). I hear people like you butcher the language every day, and your recalcitrance at educating yourself irritates me. Rather than say "chill out" try learning to speak the language correctly.

@@largeformatlandscape Science is not anecdotal. Anecdotal definition. Not necessarily true or reliable, because it is based on personal accounts RATHER THAN FACTS OR RESEARCH.

Whatever metric I use I piss someone off. KN is a measurement of force that is more universal than kgf or lbf and youtube is global not just an American thing. Get over it.

Call me old fashioned but the US is on its own using ‘freedumb’ units - and as this audience is truly international it would be stoopid to play to the minority. BTW your military uses metric to fit in with the majority, why don’t the rest of you?

You realise that youtube is not america, right ? People all over the globe watch youtube channels. Using international system units (which is not just used in europe, but pretty much every country apart from america, and a couple other) is just being nice with worldwide audience !

Bro, US military measures in SI units, doesn’t it? How many “clicks” is you head shoved up your rear? Beyond that, in the US, most of the gear he is testing is rated in KN, so he is making everyone’s life easier by using the same units that the product is native to. In engineering, and science in general, best practice is to only convert units after the math work is done. And anyway, he does all this is the mainline channel. What’s your problem? Do you even climb?

Be careful what you wish for. You may get a video with diameters in feet, and tensile strengths in foot pounds, which makes no sense because that is a unit of torque.