Enjoyed the video and learned the "40% strength retained" rule of thumb for Dyneema--useful info. But come on, kN? Seems apt if you're measuring, I dunno, asteroid impact effects on Jupiter, but bro inches and pounds for Earthlings, please.
Why must I continuously have to subscribe to your Channel about every 2 days I'm unsubscribed long time follower of the channel love your work great solid info keep it up guys. I do believe some of the stuff you're testing is being paid to Shadow ban and throttle back your viewing to keep your ratings low so your information doesn't get out about their product true facts science
Have you ever done a video on blocking knots through an anchor? I was rappelling and using a figure 8 as a block knot on a 7mm quick link. Rope diameter was 8.5mm. I was just messing around in the back yard but was wondering how much force it would take to get a block knot through an anchor
Wait I'm confused, you aren't supposed to tie knots with it? How is a rope useful without tieing knots in it? Every time you use it you have to splice it? I bet it just won't get used much then
Is it safe to leave knots permanently tied in on dyneema? Like for an anchor. I leave knots in mine, never bother untying it, but I worry that constant loads on the same knot will cause issues in the long run even though I have no evidence to support that fear
in hammock uktralight setups, you wouldn't use metal carabineers. How do dyneema soft shackles behave when they are chained? They are sharp angled to each other. I think it will be very weak spot
Just for those that are wondering, Dyneema is a brand name. The name of the material Dyneema is made out of is UHMWPE. Spectra is also a brand name made out of the same material.
You hitched it backwards from the way I do it. I set the downline and fiddle stick leash on the same side because the rope looping below the fiddle stick slopes to the downline side and makes retrieving the fiddle stick easier.
Ryan, have you ever done testing of via ferrata sets? I weight about what the upper limit of most ferrata sets is (~120kg) and you be interested to see at which force set as a whole will break...
Perhaps it’s an odd question but, if the sling is damaged and you want to isolate it would it be a “better” solution to cut the damage area and then tie a water knot with the sling instead of using an overhand? Maybe it wouldn’t matter but I’m curious. 🧐
Interessantíssimo, principalmente o primeiro soft shackle cujo nó se desfez mas o loop permaneceu intacto levando em consideração que a única coisa que o segurava é o burried end dentro da própria corda. Obrigado pelo vídeo.
Hello, good day, great job. I have a questions: ¿what is the fall factor and resulting impact force if the anchor where the main carabiner is attached were to fail? Let's consider a person weighing 70 kg with a lanyard of 70 cm, keeping in mind that these chains, on average, have 30 cm of separation between each of their anchors? 6kN ? Wouldn't it be more advisable to use the lower anchor?
This looks a lot like a marlinspike hitch. Would using a marlinspike or similar, of course with a backup line, be appropriate? I'd rather carry a multi-purpose spike, even if it weighs a tad more, than a more limited piece of plastic.
FYI for the date format, using year-month-day format can be nice for ordering stuff on a computer. I somewhat commonly use that date format as a software developer. I'm guessing the date ends up in the log file names right? So if you have several logs on different days (especially if those days are in different months or years) then if you sort by the file name, year-month-day will always sort chronologically. This doesn't really matter if the device has some different method of sorting log files. E.g. if the file names begin with a number that just increments by one for each new log, then sorting on file name would always sort things chronologically anyway.
Wow, thanks again. I watched this carefully, and realized I normally want continuous log mode for my tests. I also realized how easy it is to pick the wrong choice.... boy those 1280 Hz logs fill up space quickly... Thanks, thanks, thanks.
@HowNOT2 thanks. I'm guessing the app probably isn't setting write permissions correctly, or doesn't close the file. The app tells one the name of the file, but that cannot be found on the device
@@HowNOT2 if someone with the android developers kit (say on a laptop) and an android phone visits you, s/he can run the linescale 2 app on the android phone bind to your linescale, and use the debugger in the developers kit to redirect the logcat buffers on the phone to a txt file, to see what is actually happening. That's more than enough nerding for now. The programmer need not have his/her own linescale!
I was pleased to see that a figure 8, knot will break rather than slip. I always thought that every knot in dyneema would simply untie itself by slipping rather than break.
Not a ‘fast to release’ system configuration and the station must be a stable area that the operator can comfortably be positioned directly next to the block.
Hey guys, Would you PLEASE do a video break-testing draws that have been left on the wall for a season or two? I've heard way too many stories of people falling on old project draws and they break so easily, sometimes multiple in a row. It is a huge danger in Sinks Canyon, Wyoming where everyone leaves their gear on for years and years and people just blindly trust it. We need a PSA from the pros! It would be neat if you did some on the bench test and others maybe in a climbing gym to see if they actually blow or not (high up enough obviously where it's safe to fall further). Also maybe some old slings left on the wall as extensions! I see this a lot too and they are so dangerously worn. Coming from an operating room nurse, I just want everyone to be as safe as possible when crushing projects :)
Man I almost cried watching that 30 year old REI draw get busted. What a cool piece of history. I would make some neat wall art with those if I had some.
If you decide to do a more exhaustive test use Triple Action, Double Locking carabiners like the ones that arborists use. I suspect it will make no difference in terms of breaking strength, but it would produce test results that are directly applicable to the kinds of carabiners that are required for tree climbers in Federal agencies like the US Forest Service and Bureau of Land Management.
It depends. When rappelling into water (especially water with current or hydraulic problems) a third hand can create more risk than it guards against. In dry or semi-dry canyons it is somewhat common for only the first person on rappel to use a third hand and then provide a bottom belay for others in the group.
I use maillons (quick link) for putting ropes to trees. Being shorter than carabiner, there is less to be bent. They take side loading better too (and are less likely to get side loaded) which I find good for something that is difficult/impossible to inspect up there. Smaller pipe would be interesting to see, especially if agains maillons too.
For example, it can allow you to descend with someone that may be injured or now is in need of assistance. Or if someone does get in trouble you can descend down and lend them a hand. An MMO doesn't solve everything so using this as a double strand can have its uses.
