Hi Ryan, cool testing, as usual. Regarding the 40 years old rope: I am not surprised. If you use a rope, like in rappelling, the breaking load drops very soon - half of the breaking load is normal. I would be surprised if no one had used it, if it just hung there without anybody ever ascending or rapelling. But I assume that it has been used quite a bit. Under a very good light microscope you can see the difference in the fibers. So - as long as we do not know how they used it - I assume that its the useage and not the age. You could compare it to permanent installed ropes in a climbing gym: After 3 months (no UV, only toprope) the breaking load in the worn part - if you tie there a fig.8-knot - can be around 5 kN (!) - if the route is popular and the gym has many visitors. I would say: 12 kN show that the cave rope has not been used in toprope situations, only for asccending and rapelling (which is less internal damage than bending around a carabiner 180 degres). The mud may have increased the internal damage. By the way: UV does not affect the breaking load that much if you expose it in a south face for only 30 years. It weakens only the sheath.
@1stGruhn3 жыл бұрын
not knowing much about the material development of ropes... but I would think that what ropes are made of now isn't the same as what they were once made of: not really an apples to apples comparison. Surely the tech has changed a fair bit in the last 40yrs. But I've been caving a bunch and it is quite normal to get ropes totally covered in mud and fine sand, that is typically the reason most cavers have told me why they change their ropes every few years. He did note that they washed the rope and it still gave off quite a bit of dust... just shows that you will never fully clean a rope... especially from cave clay lol: that stuff never gets out of gear.
@NYpaddler3 жыл бұрын
Most of the braking force when belaying or rappelling comes from bending the rope rather than friction against the belay/rappel device. I wish I could remember the details or scare up the article, but I once saw something about the braking force when bending the rope around pulleys instead of brake bars, and the pulleys were roughly similar in terms of effectiveness. It stands to reason that all the bending and the internal friction and abrasion of fiber against fiber has to have an effect on strength. Adding dirt is a bit like adding tiny little razor blades, because dirt is more or less very tiny stone chips, though erosion (and perhaps chemical action) will tend to reduce the sharp edges. I wonder if caving ropes often being wet might be a benefit, in that it could reduce the friction and related damage from dirt. On a related note, damage to fibers could certainly help to explain why the older rope is so much more flexible, though I'm wondering if they really re both the exact same rope.
@NYpaddler3 жыл бұрын
@@1stGruhn I'm pretty sure that nylon has been nylon for a really long time, and AFAIK there's nothing that makes new nylon stronger than the nylon that was being produced 40 or 50 years ago. If there was any difference in rated strength when each rope was new it's probably insignificant.
@JasperJanssen3 жыл бұрын
@@1stGruhn forty years ago is 1980. By that point nylon ropes were pretty much the same as they are now, AFAICT.
@matthewgough95333 жыл бұрын
"I love forcing soft shackles in places they shouldn't be" Me too, man. I use a soft shackle inside our reclining sofas, connected to the framework and then a carabiner that pinches the fabric of a couch cover to hold the inside corners in place. Not as cool but it's the only thing that I can squeeze into that crack.
@HowNOT23 жыл бұрын
hahaha. you could get it in any crack technically
@PrimitiveBeasty3 жыл бұрын
I think he was talking about the time he shoved one up his ass.
@theadventuretravelchannel3 жыл бұрын
@@HowNOT2 Hello, could you please break test all the 'climbing' products sold on Amazon? Also home depot steel quicklinks vs climbing-rated rapides?
@spectac19833 жыл бұрын
Love the “caver” shirt. Way more credible for testing caving gear
@ccd1233 жыл бұрын
Great tests and KZfaq channel. I'm a climber in my early 50s have have fair amount of what is considered old equipment even though a lot of it looks to be in good condition. While on belay ledges or dreaming about being on them I often wonder about the need to resling cams after 5 years, tossing out new looking ropes at 10 years, etc. I read that static nylon ropes lose about 1.5 to 2% of their strength per year. I thought that was a pretty interesting metric and ran the math on your 40 year pit rope pull tests and it comes out pretty close. ~5700 lbs new and ~2800 lbs after 40 years of use in darkness. Not bad... You and Bobby are provide a valuable and entertaining service to adventures, engineers and the curious of the world. Keep on breaking stuff and presenting the results.
@Makahan3 жыл бұрын
The thing with degrading gear is, that chemical reactions basically never stop. They just reach a state where it is super slow to go on. The main influences on our gear (ropes and stuff) are heat and UV light which speeds it up. You can google the Q10 value, it gives you a basic idea how temperature is affecting the reaction. So when you put the gear in your closet it is degrading slower but still is degrading.
@justinzaff3 жыл бұрын
Can you break test washed rope with different chemicals to eliminate that as a factor in weakening a rope ?
@aaronwain14903 жыл бұрын
This idea would make a great episode!!
@justinzaff3 жыл бұрын
@@aaronwain1490 I agree . I can't find anything that actually shows proof of ropes that are washed with detergent , soap flakes , ' natural ' non chemical substances and the relationship between that and a weakening of the structure of rope . If he can make an episode about that I think it would set a benchmark .
@joshuaimhof45293 жыл бұрын
I super second this idea
@ockyCBR2 жыл бұрын
3rd it.
@MarquitosBld3 жыл бұрын
Love that you use metric system, keep it up pal! Cheers from Patagonia
@ganlet203 жыл бұрын
To Bobby's question, I use quick links because I don't have a good way to tie into an anchor when both ends are unavailable. One end is on the top anchor and the other is tied to the bottom of my rope bag.
@PraxZimmerman3 жыл бұрын
Huh, I've only heard of using soft shackles in vehicle recovery so when the line inevitable breaks you don't have a 2lb metal shackle flying towards your head at mach-12
@50StichesSteel3 жыл бұрын
40 years in a closet is one thing....40 years in a wet cave with extensive use is another lol
@briandickey42763 жыл бұрын
I've experimented with the zepplin knot before and I found that they can untie themselves when loaded and unloaded repeatedly. I found this especially bad if the rope was stiff like some caving ropes are.
@dragonbushcraft76123 жыл бұрын
I have an 11 mm climbing rope that has never been used and kept in a closet for 25 years. Are you nterested in testing it?
@fiddleronthebike2 жыл бұрын
I'm impressed by the old rope! The air in a cave is not like in your house - it's quite aggressive (look at how fast most metals are destroyed there); and more than half of the original strength after that long period of time... that gives me a lot of confidence!
@hobbitilius3 жыл бұрын
That's actually incredible, I always thought the Zeppelin Bend would decrease breaking strength massively because of the fact it has ropes pulling on each other at 90°. Guess I was wrong and the Zeppelin bend can become my favourite knot once again!
@HowNOT23 жыл бұрын
We'll test it again on drop tower when we get it
@Sparkeycarp2 жыл бұрын
I have a 46 year old Eidelrid I retired. I climbed for 15 years on it. Then I climbed another 15 on another waterproof rope. Now I use the Eidelrid to tie stuff down in my trailer. I also used it to lower tree branches when not wanting to hit something below. I have used it many times a a safety on roofs. I do not store it in the sun. Built a climbing wall in my garage 25 years ago. Used it for self arrest so I would not hit concrete. I would never throw a rope away. Might not lead on it though. Used "cracken ups" that I never bent or broke for aid climbs. Way back when I remember the being taught Goldline was for rappeling and those sheathed nylon ropes were for climbing. I lost my Goldline and just started using my Eidelrid for everything. You get used to the stretch.
@59PLUS3 жыл бұрын
Test totems in tipped out / Passive placements!
@Suhgurim3 жыл бұрын
my thoughts is the dust/dirt would degrade the rope, it would be interesting to find some new old stock rope that has been kept dust free
@johnnyrodeck3 жыл бұрын
Great setup for testing. Enjoying the content. Have a good day everyone!
@aaronwain14903 жыл бұрын
I really enjoyed the creativity of this episode
@ShurikB933 жыл бұрын
"Common sense takes the fun out of thing" Should be the new slogan here
@Furious_George3 жыл бұрын
You’re finally getting more subscribers. You deserve it. Good job!
@HowNOT23 жыл бұрын
Thanks. Hopefully 50k in a few days
@Furious_George3 жыл бұрын
@@HowNOT2 you’re at 50.1k now! Woo hoo
@sammysimpleton Жыл бұрын
my scout leaders told us dirt getting in between the fibres weakens ropes because the sharp edges of the particles cut at the fibres
@shaneh75193 жыл бұрын
The Boy Scouts lied to me! We were told the square knot was the best way to combine two ropes
@HowNOT23 жыл бұрын
I just use an overhand personally (with long tails)
@shaneh75193 жыл бұрын
@@HowNOT2 I’m new to climbing, haven’t done anything besides indoor bouldering. But love your videos to show cool insight into the more advanced side of things
@eyescreamcake3 жыл бұрын
@@HowNOT2 You mean a Euro Death Knot? It's best to use a double overhand
@megajoe83 жыл бұрын
@@eyescreamcake I think he means the flat overhand bend...which is super good enough.
@PeregrineBF3 жыл бұрын
The square (reef) knot is a terrible way to join the ends. Use a bend. The scouts teach the double sheet bend for that, it's decent. The zeppelin bend is better. The Double Fisherman's bend is one of the strongest, but uses a lot of rope. The Reever bend is almost as strong, and uses less rope, but is harder to remember.
@ericharrison86393 жыл бұрын
Regarding the loop in the zeppelin bend, it's way easier to pass a knot (either direction) if there is a place where you can attach an point of contact. In caving we always try to have 2 points of contact whenever fiddling with stuff. If two lines are tied together without a loop my process to ascend past that would be something like this: 1. Ascend as high as I can without jamming my hand ascender against the knot. 2. Attach a prusik above the knot and attach my short cow's-tail to it. 3. Verify that I have 3 points of contact. 4. Detach my hand ascender and reattach it above the knot. 5. Step up on my foot loop, disengage my chest ascender and attempt to reattach it above the knot. 6. Double check and go. If there's a loop in the system you don't have to worry about prusik, especially if the rope is muddy, wet, and slick. Also descending past it is way easier with a loop.
@jhuntley5753 жыл бұрын
Hello from New England
@rachelhasbruises3 жыл бұрын
"...land of cold, gnarly, difficult caves." 😉
@jhuntley5753 жыл бұрын
@@rachelhasbruises lol
@fdect3 жыл бұрын
Fun fact: "Pingo" in portuguese means "Drop" in english. I wish I saw more of them here in my area in Rio de Janeiro
@HowNOT23 жыл бұрын
Nice!
@lukesonnenburg50063 жыл бұрын
Never thought a poorperson´s chimney video would be so interesting
@whateverihateyouwtf3 жыл бұрын
any idea what that rope was rated for when it was made 40 years ago? i have to assume materials and design have changed since then
@ujjc0013 жыл бұрын
What was the technology 40 years ago, was that old rope's full strength actually the same as it is today?
@rachelhasbruises3 жыл бұрын
I'd have to ask PMI, but honestly I don't think much as changed.
@ethanreuter28883 жыл бұрын
Yes
@NYpaddler3 жыл бұрын
@@rachelhasbruises I'm pretty sure that nylon has been nylon since before PMI was started.
@ujjc0013 жыл бұрын
@@rachelhasbruises I'd be curious to actually know for no other reason than now I have this question I don't know the answer to...
@marcofioraso49643 жыл бұрын
Really interesting, new static ropes can reach even 30 kN of strength, but it has to be considered the knot type that has been used to tie the rope. Mud and sand can really damage the rope, especially when they are going inside to fibers, but 20 years rope in caves (I know it from some tests), if not exposed to mud but only to water and to the wear of rappelling and ascending are totally secure. Another factor to consider is not only the load of rappelling and ascending but even the stress caused by the rupture of an anchor in rebelay. PS I see that you use Raumer O-Wing, I'm happy to see that his material is used in the US too, Raumer (that is settled not so far from where I live) has done the history of caving with a lot of innovative stuff.
@levinkuk3427 Жыл бұрын
You can knot the rope into the anchor plate directly (also in the middle of the rope) with a "double Bulin" before screwing it to the anchor like you mentioned. That way you don't need a Quicklink or the Soft Shackle at all, which is the lightest, cheapest an safest version I would say. Only thing is that you need to use anchor plates without sharp edges (eg. "Vertical Evolution ALL" but i am sure there are several other brand's producing that), but that's still cheaper and lighter. I do that frequently and have also discussed that with my colleges from cave rescue and I haven't found any drawbacks yet.
@rachelhasbruises3 жыл бұрын
I'm sorry the dream of tactical cave soft shackles still eludes you. #thoughtsandprayers
@rikvdmark3 жыл бұрын
Very interesting one again 😬 Cool shirt by the way 💪🏻
@RippDrive3 жыл бұрын
Congrats on 50k!
@dylanmorgan28362 жыл бұрын
The way the thimble was attached means the load goes on only two strands of cord. The way soft shackles are usually attached puts the load on four strands.
@briandickey42763 жыл бұрын
The soft shackle idea is interesting. That said for the soft shackle I'd be more concerned about abrasion on the rock compromising the shackle. Especially on ascension.
@glynroberts48023 жыл бұрын
Greeting from the Uk, from a fellow ropes nerd. Petzl ring hangers (not sure if they are still available, Raumer are an alternative ) or clown hangers don’t require a quick links (or as we call then maillon rapide). Both possible to install on the middle of 11mm rope (with a bit of planning). Keep up the good work.
@rachelhasbruises3 жыл бұрын
Thanks to folks like Cave Exploration Society, we DO get Raumer stuff in the states. Looove their gear so much. 😍 We don't really use Spits much anymore so the Clowns are dead in the water, plus I don't think most "American" ropes fit into them. We're slowly pushing the adoption of alpine rigging, so small diameter ropes are getting more popular. But the modern bolting is almost always mechanical bolts, not spits.
@ericharrison86393 жыл бұрын
Are you going to do break tests on other caving things, i.e. bobbins, racks, ascenders, etc.?
@rachelhasbruises3 жыл бұрын
Falling on a hand ascenders (vertical, horizontal traverse lines, with and without biners clipped through as safeties, etc) is high on my list of "Ryyyyyan, ya gotta test this...!" Especially since I see so many people being taught to use a hand ascender or a QAS instead of cowtails 😒 @Derek Bristol did pull tests on bobbins, with general "well, it'll catch you but your gear is fucked" results
@cmouser883 жыл бұрын
I saw some rope access guys on the rope hub app (before it disappeared) out in Dubai that left a set of static ropes exposed on a rooftop for 2 years and saw no significant degradation from UV exposure.
@123amsterdan4563 жыл бұрын
Pingo hangers are the future
@hikemoreh96pro3 жыл бұрын
very good channel, thanks
@megajoe83 жыл бұрын
Have y’all considered pull testing random “no name” bolts like are super common on eBay? There are a bunch of random Chinese 304 SS wedge bolts available for relatively cheap. I’m curious how they break compared to bolts from dewalt or Hilti. I’d be happy to chip in to purchase the bolts for testing.
@HowNOT23 жыл бұрын
Here are fusion hangers, it wasn't a brand I was familiar with. I think most hangers that are stainless and made from 3mm or thicker stock is going to be stronger than the carabiners we attach to them. kzfaq.info/get/bejne/gsqKgLh11J6WoKs.html
@megajoe83 жыл бұрын
@@HowNOT2 Interesting. I’m not sure how I missed that video but I’m glad you made it. I’m specifically curious about the no name mechanical bolts that you can find on eBay or Amazon. Would you be interested in testing some? I’m concerned that people are using cheap eBay bolts marketed as stainless that might not actually be stainless...or be strong enough for lead protection.
@Sicnus3 жыл бұрын
No scary caves, upvoted.
@keithboone48003 жыл бұрын
I want to see a break test on a figure 8 retrace with a double Yosemite finish.
@HowNOT23 жыл бұрын
Are you thinking the bigger bend radius would be better?
@keithboone48003 жыл бұрын
Yeah. We were sitting around last night over dinner and wondering if the bend radius would have an effect.
@keithboone48003 жыл бұрын
@@HowNOT2 you have us nerding out now on this stuff.
@LawrenceLarson-ln8yy5 ай бұрын
Yeah it is a crossover loop when having to ascend through a knot...
@daveadams2712 Жыл бұрын
I wonder how many KN are created in a fall rather than just rappelling?
@joestevenson55682 жыл бұрын
So the zeppelin broke before the double figure 8s, which presumably means a flemish bend is stronger than a zeppelin bend, although a pig to untie.
@gergopokol76783 жыл бұрын
I totally share your love of numbers, great job! But, our SAFETY RATIO ESTIMATES are significantly off in all your caving videos! The design basis incident of a single-rope caving set-up is the failure of an intermediate anchor. The hind thought is that the top anchor must be extremely secure, but with intermediates, placing is an equally critical factor to avoid sneaky problems with rope wear. The failure of an intermediate anchor will result in dynamic forces on a static rope, and that is why it is essential to have safety margins in the rope (and all equipment) which might seem insanely high at first glance. Also, for segments with possibly high fall ratios, extra (butterfly) knots might be necessary to improve the shock-absorbing capability of the rope. (To further degrade trust in caving rope technique, you might try to imagine a fall with your croll on the rope from the rope perspective... ouch!)
@perttiorn80293 жыл бұрын
Can you please pull test the anchor hitch (anchor knot). You loop the rope twice around the carabiener, then go over the loadend and through the loops with the tail. You start the loops at the spine side of the biener not the gate side.
@TheShoelaceBandit3 жыл бұрын
I can't find The Walter guys link that you speak of.
@koemiee3 жыл бұрын
Hi, i found him: Walter Siebert: channel/UCq62mVrEfBsGgk-oswsUhpQ
@nathanpage97263 жыл бұрын
18:59 As those of us who have been here a while know all too well... ;)
@auklin7079 Жыл бұрын
At 40 years old, was it just built differrent?
@isaacs16462 жыл бұрын
now you know the half life of that rope
@johntatman91682 жыл бұрын
The knowledge of rope manufacturing, I'm sure, has changed significantly in 40 yrs. I doubt that old rope would match the strength of the new one even when it was first new.
@carsonmcmahon88302 жыл бұрын
I'm almost positive that was old Blue Water. It's almost the only thing anyone used in the southeast then, and it was about 5000lbs rating when made (and yes, I do believe they rated in pounds).
@tomtom44053 жыл бұрын
Never used Zeppelin knot, but the version of anything that has a loop is great. You need a loop at a join and this means you don't have to tie a butterfly hitch as well. Why do you want a loop? Imagine you are srt jumaring up a rope or rappelling down a rope. When you pass the knot you have a loop ready to clip with your cowstail for safety so it's then really really difficult to scr3w up passing the knot and somehow fall off the rope and die. That'd seriously ruin your trip.
@HowNOT23 жыл бұрын
Would ruin your trip, hahahaha
@MikeDCWeld Жыл бұрын
Why not just use a bunch of soft shackles chained together?
@jimmussell58133 жыл бұрын
Perfect video. Of fun and fact
@billhickswasgreat34213 жыл бұрын
Mud being put into the rope, where it did its abrasion magic, would be my guess. Yet 12kN for 40 year rope is not all that bad.
@simonwilde23833 жыл бұрын
Were the materials 40 years ago as strong as the newer materials today? Forty years ago were the ropes made as well and as strong as today? I would assume that the technology for rope making would have improved in 40 years. Who knows?
@GetUrPhil10 ай бұрын
I have a brand new (At the time 2013) that has been in a dry bag and unused since I lost the complete use of my arm and hand, Would that rope still be good? FYI, I got some use back after surgeries and yrs of physio.
@kylesmart1093 жыл бұрын
Would love to see a break test done on climbing ropes that have a flat spot or kink in them of different sizes/ severities. Iv seen set ropes in small climbing gym that gets very light use, develop small flat spots from people falling at the same spot on the climb. These ropes had to be cut because of safety standards but do those flat spots and kinks actually affect the strength of the rope?
@Bhamlunker2 жыл бұрын
He has a video on that - don’t have link now buts it’s there
@matthewgammon13033 жыл бұрын
I would use old ropes normally in non life threatening situations.
@Demicron2 жыл бұрын
What's the difference between climbing rope a d cavind rope? I don't know what any of this is.
@petermichaelgreen2 жыл бұрын
AIUI (not an expert, this is not safety advice) Climbers mostly use ropes for fall protection, so they want/need stretchy ropes that will reduce the impact forces when they fall. They also normally bring the ropes with them as they climb, so weight is important. Cavers on the other hand mostly use the ropes themselves as a means of access and often leave them in the cave semi-permanently. If you are ascending a rope then stretchy is bad, because it will absorb the energy as you try to push up on the rope.
@DaftFader3 жыл бұрын
Most cave are very humid, so it probably degraded from years of water exposure (and the mold that comes with it). It also depends what he rope is made of. Natural material ropes weather very differantly from manmade fiber ropes as they are basically plastic, not cotton or some other cellulose based fiber like the former.
@NYpaddler3 жыл бұрын
It's nylon, which is more or less unaffected by water and mold. Mold and mildew might live on organic stuff that ends up in the rope, but the nylon isn't a part of their diet.
@DaftFader3 жыл бұрын
@@NYpaddler are you sure tho? That stiff rope looks like waxed celullose based rope to me. Especially being 40 years old, when nylon was not nearly used as much.
@Quackks003 жыл бұрын
is there nothing that oxidizes rope or off gas from rope? Over time in storage without UV?
@eeeeee90002 жыл бұрын
I don’t think I could trust the “big knot slipped through loop” technology of the soft shackle
@piti74013 жыл бұрын
Soft shackles seem to be good enough, but i have a few conserns: 1. in cave you sometimes do some wery veird moves so locked biners are better than some shackles with can unwrap with no safety lock/kont or sth. 2. Caves are dirty - can we be shure, that shackles after few mud runs inside cave are still reliable? It's easier to clean biners and i guess they will have longer "usable" lifespan. 3. if u attatch shackles directly to harness i'm shure u gona have troubles hanging yourself on them while passing throgh tigh spaces.
@HowNOT23 жыл бұрын
I personally haven't seen or heard of a soft shackle accidentally opening. And I have some corroded carabiners being sent to me for break tests so even those don't last forever. I don't know if they really have a place in caving but they are pretty useful things.
@felixspringer99573 жыл бұрын
@@HowNOT2 I am a great fan of soft shackles too. Use them all the time in my high lines and just recently took some to a cave just to see the reaction of the other cavers :D As you might guess, no one trusted my 6mm shackles - but rather a 15kN aluminum hanger... Thx for spreading the word about dyneema, its fantastic material!
@JasonMinahan3 жыл бұрын
@HowNOTtoHIGHLINE Ryan, you said Walter Sebert(SP)? did some testing with UV light on ropes things? I don't see the link.
@HowNOT23 жыл бұрын
Sorry. His channel is here. I've emailed him today this video to get his thoughts. kzfaq.info/love/q62mVrEfBsGgk-oswsUhpQvideos
@enricociuppa70933 жыл бұрын
For keep long time ropes, kevlar is the way to go
@rachelhasbruises3 жыл бұрын
I haven't seen Kevlar get used much in the US caving world, and I'm not actually sure why it's not....
@constrictorludgero3 жыл бұрын
When are you going to test some climbing harness?
@ShurikB933 жыл бұрын
Done a while ago, search the channel
@constrictorludgero3 жыл бұрын
@@ShurikB93 I saw them testing dynaloop vs harnesses. But not comparing harnesses vs harnesses.
@Folsomdsf23 жыл бұрын
need way mroe info on the old rope. Could literally have been used over time. Also it's not the same rope and likely not the same manufacturing technique.
@bcwbcw37413 жыл бұрын
Sharp dirt and grit particles also cut into the fibers and weaken rope.
@sebastianflynn17463 жыл бұрын
I don't think there's actually any evidence of dirt and grit particles migrating into the core, I've cut apart filthy ropes and they're always shiny and white on the inside
@bcwbcw37413 жыл бұрын
@@sebastianflynn1746 Maybe swirl some core in a bucket of hot water and see what comes out. Let it dry and see how much salt and calcium has accumulated.
@sebastianflynn17463 жыл бұрын
@@bcwbcw3741 that's an interesting one, exclusive to caving and ropes fixed on limestone it would be really interesting to see how much you get in mineral deposits inside ropes.
@lordofnothing.3 жыл бұрын
maybe the old rope was produced in an inferior way? what was it rated for when it was new?
@rachelhasbruises3 жыл бұрын
PMI MaxWear (pit rope) is rated for 31kN without knots. Honestly the old rope broke higher than I would have expected considering it was in a seasonally wet pit, flapping around against the rocks for 40 years ....
@Twisted_Tables_nothing1173 жыл бұрын
yeee
@maldonadorodrigo3 жыл бұрын
👏🏼
@mikeyc49653 жыл бұрын
U said stinky? As in molding? Like sat in a wet dank cave for 40 years, so no UV but something else eating rope? Guy in comments says he’s got an NOS rope to test?
@climbingforlife13 жыл бұрын
When are you gonna test those totems you showed on your Instagram???
@HowNOT23 жыл бұрын
kzfaq.info/get/bejne/nd-nmdVlrd_LhJ8.html
@climbingforlife13 жыл бұрын
@@HowNOT2 omg thanks I’m must have missed it
@expierreiment3 жыл бұрын
Here is the missing link to Walter Sieberts channel: m.kzfaq.info/love/q62mVrEfBsGgk-oswsUhpQ
@njcaveexplorer3 жыл бұрын
Now I know you may not be a real caver because if you truly were, that caver shirt would have been duct tape! Will I be seeing You at convention?
@sketch21023 жыл бұрын
Spelunking
@rachelhasbruises3 жыл бұрын
Caving.
@yapware3 жыл бұрын
Cavers Rescue Spelunkers.
@johnnycharles7023 жыл бұрын
"Look at that dust" asbestos much?
@fernandosanz44223 жыл бұрын
I hate common sense...very funny
@yoxzvandelft9884 Жыл бұрын
The title is a bit distracting, it is all about soft shackles.
@HowNOT2 Жыл бұрын
The pit ropes were tested first and the soft shackles were requested by many cavers to test.
@HowNOT29 ай бұрын
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@karstoutdoors16063 жыл бұрын
There are theories as to why a rope left in a cave will degrade over time. There is a difference between an unused rope in a climate controlled environment and permanent rope set up in a cave. Even though a rope in a cave is not exposed to UV light, it will likely get used on a regular basis and will get covered in mud. Every time the rope is used, it will get stretched with the weight of a caver and then contract when it is unloaded, which will allow mud and dirt particles get driven into the rope fibers. The repeated stretching and contraction of the rope from rappelling and ascending, combined with mud particles in the rope fibers, increases the friction between rope fibers and begins to break them down over time. That would be one of the more common theories as to why a rope left in a cave for 40 years will lose strength over time.
@HowNOT23 жыл бұрын
True. other factors other than UV will shorten the life of it.