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[Music]

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[Music]

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[Music]

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whoa so

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it's not the sound that you want to hear

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when you're out climbing

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is it bad if I scream behind the camera?

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how fuzzy is too fuzzy

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this is the rope that i used for about

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two years of intense climbing

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or at least this is the end of this rope

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if i compare to the middle this is how

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the middle of the same rope looks

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and as you can see it's a huge

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difference

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so the question is should i worry about

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this fuzziness or another question that

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i see climbers disagree a lot on is if i

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can squeeze my rope like this does it

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mean that inside core strands are

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damaged or no

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so to avoid breaking my back on homemade

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experiments

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yeah as some of you noticed

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it can be quite stressful

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so not this time. This time i decided to

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reach out to Mammut and ask if by any

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chance i could come over and nerd with

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their engineers

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how dangerous is this?

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(laughs) we will find out

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so this is a product developer from

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Mammut

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and you said you're an expert in textiles

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would you whip on this?

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(uncomfortable noises)

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can we destroy this rope? I would say the

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core's joints won't fail if it's a normal

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sport climbing fall

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within the first fall?

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no no no not the first fall.

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Would you whip on this?

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Oh yes definitely.

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How many times?

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So this rope is not the same rope that

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we used in an experiment. That one was a

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little bit worse than this

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and it kind of died.

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Can ropes die?

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Anyway the goal was to find out what

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happens if you take a huge fall

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and this soft spot hits on your

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quickdraw

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exactly on the peak force and by the way

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this video is not sponsored but in case

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you don't know mammut is one of the

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oldest companies making climbing ropes

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so they have some serious knowledge

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about that so I wanted to know everything.

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Let's get nerdy! I have a

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bunch of questions from me and my

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followers

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Sounds great!

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Ah. You're probably gonna add

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10 000 more questions

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I'm sorry

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and by the way the questions that you

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guys sent

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had some

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serious sense of practicality

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a cat pees on my rope how bad is that?

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Or a dog peed on my rope how bad is that?

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If you have a dry rope

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we test it with human pee

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because i mean if you're on a multipitch

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and you have to go

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so you actually did the testing on this?

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yes and

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the answer is no it's not dangerous.

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I wonder if cats pee or dog's pee is more

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aggressive than a human pee?

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hey let's go do some science

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so this is where the rope testing magic

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happens and this is where you get those

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six seven eight or whatever falls on the

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rope.

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Exactly yeah.

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Statistics.

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The scenario is like really really hard

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like we have a fall factor of around 1.7

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we test the ropes with the 80 kilogram

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steel mass which is like super static.

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What are the forces on standard tests?

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For a single rope it's

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around like 8 to 9 KN on the edge...

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For the first fall?

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For the first fall.

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And... we had the first problem.

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so called standard rope test that every

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manufacturer does is super extreme in

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order to make it more like a real

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climbing fall we needed to reduce it

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below 4 kilonewtons and if you ask why 4

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it means that you haven't seen these two

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videos where we tried to create their

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hardest real climbing falls and measure

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the forces of them.

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That's why I said like maybe we try like

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with a new rope to get like a feeling

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like what falling height we need to have

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like around this less than 4k and then

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we switch to your rope

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don't look guess 2km 2k

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i think it's less

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wow two and a half as i said these guys

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are really good it took only one fall

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and we got the force of two and a half

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kilonewtons on a brand new rope and that

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was perfect because we were estimating

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that once we swapped the ropes to the

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old one the force will go slightly

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higher because all the ropes don't

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absorb the impact as well and it's going

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to be a perfect representation of

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a realistic

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hard climbing fall.

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so here's the tricky part

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when you fall on rock

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sometimes it happens but almost the same

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spot hits the

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top carabiner -yeah

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and now the tricky part is how to place

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that spot that it would be on a peak

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force on the carabiner

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Yeah

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not easy or hard is easy.

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as you can imagine once the fall happens

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the rope stretches and that soft spot that

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we are trying to hit will move

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(Speaks German)

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You thought it's gonna be easy

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no no

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i knew it will be exactly like this the

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force to the rope will start increasing

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increasing increasing increasing

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increasing and at some point reaches the

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maximum and then the force will start

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dropping dropping dropping dropping

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dropping

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so the challenge is how to position the

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soft spot

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that it would move over the quick draw

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as close to the peak of the force

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with this

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small fall scenario a new rope oh

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it's about like what 400

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300 400 500 right

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a lot so new rope would hold about 400

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falls on realistic fall yeah let's see

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what happens if we put that damaged rope

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and see

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if it's hundreds or it's just a few.

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do you think we will hit that spot or we

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will be very far off?

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I think we hit it yeah

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where is it now like 30 centimeters

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below

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yeah it's around here now

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and the rope is tense so probably this

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will move up

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and

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how much we will see

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[Music]

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so we overshot the soft spot just by a

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little bit so we will try to readjust

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now and

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see if we can hit it more perfectly

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[Music]

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so we managed to hit the spot

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at

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2.47 kilonewtons of force now we will

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try to increase the fall a little bit to

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get to really hard falls

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20, 30 centimeters

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let's see if we will still stay in

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the damaged spot where it will just

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stretch over

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so we broke the sheath

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we broke the sheath after two falls

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and you said it's gonna last

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no but that's what i said like the

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sheath will break

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by force

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the force was

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only 2 point one

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only 2.1 kilonewtons and the sheath

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broke

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so

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if your rope is

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soft good luck

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if the sheath is already damaged like we

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saw it like now this will lead like to

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cut sheath like immediately but the

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the good thing is that the rope will not

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snap

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because the core strands like are

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still intact so how many falls it would

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take now to completely snap the rope

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that's a good question i never tested

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this

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but we could do this i guess we can do

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at least like two or three falls now

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only on the core strands

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yes yes

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guess how many falls it's going to take

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20

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20 yeah wow so it took only two falls

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to completely shred this sheath

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but the good thing is like a rope is

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constructed in a way that the sheath only

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takes around like 10 to 20 percent

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of the load

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and the rest like the the

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load bearing structure is basically only

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the core

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okay so

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the question is if you take a rope and

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you squeeze it so you feel that it's

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soft completely inside does it mean

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that the core is damaged or no?

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no because a lot of people think that

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it's damaged inside

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the core is still intact

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like if i would cut the rope at

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that spot would i find some damage

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inside of the core strands?

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It's difficult to say because over time

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the core strands also when we do fall

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tests you can see that it gets a

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little bit more hairy

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if you would cut it open but it's just

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a couple of filaments that might have

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broken but it's not that an entire core

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strand is broken but it's weakened for

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sure

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let's see if we can snap this room now

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yeah so how many falls you said?

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I don't know

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10 to 20?

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10 to 20. let's see

252
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so this is one multifilament.

253
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Multifilament made out of multiple filaments yes

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how much

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280. this is 280 inside of this so if i

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would take one

257
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what force that one thing would hold

258
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well you would not test it like this

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because a multifilament you look at it

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as the entire thing but what i can tell

261
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you that this core strand

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would hold 180 kilos and we are not even

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reaching very hard falls yet this is

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nothing

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-so you see?
-One strand snapped.

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So you said 20 how many strands are

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inside?

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[Music]

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Two of eight!

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So you said 20 falls?

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10 to 20!

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Apart from standard drop tests what

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are other tests that are performed on

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-climbing ropes?
- What we usually do is

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also test the abrasion resistance of the

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rope so there we have an in-house

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developed testing method. So it's a

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machine which pulls a rope over a sharp

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metal edge and we are counting how many

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cycles it takes for actually damaging

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the shaft.

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[Music]

283
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We have like two parts now broken.

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So we have one part and two parts broken!

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Yeah if we talk about abrasion resistant I

286
00:11:38,480 --> 00:11:40,720
have some interesting stuff to show you.

287
00:11:40,720 --> 00:11:44,160
200 cycles so 200 times

288
00:11:44,160 --> 00:11:46,640
back and forth. Here you see a classic

289
00:11:46,640 --> 00:11:49,440
rope so it does not have any treatment

290
00:11:49,440 --> 00:11:52,880
impregnation, it's a 9.5. It's pretty

291
00:11:52,880 --> 00:11:55,200
-worn out.
-It is worn out! It's at the point

292
00:11:55,200 --> 00:11:57,120
where i would consider maybe even

293
00:11:57,120 --> 00:11:59,839
-cutting this. 
-Yes, and you should.

294
00:11:59,839 --> 00:12:01,760
Then next to it, we have

295
00:12:01,760 --> 00:12:04,720
also 9.5 but it has the dry treatment.

296
00:12:04,720 --> 00:12:08,160
-What? That's a huge difference! 
-Yes.

297
00:12:08,160 --> 00:12:10,639
That's exactly the same rope but just

298
00:12:10,639 --> 00:12:16,000
-dry treated? 
-Yes. that's a huge huge difference

299
00:12:16,079 --> 00:12:17,760
It feels a little bit burnt like

300
00:12:17,760 --> 00:12:20,150
when you touch it,

301
00:12:20,160 --> 00:12:22,000
it definitely got hot,

302
00:12:22,000 --> 00:12:23,680
like on the edge.

303
00:12:23,680 --> 00:12:26,240
So your six lives got a bit damaged.

304
00:12:26,240 --> 00:12:28,320
But that's good to know that you can climb.

305
00:12:28,320 --> 00:12:30,320
You can climb? You would climb on this?!

306
00:12:30,320 --> 00:12:31,440
I mean the Fitz Traverse

307
00:12:31,440 --> 00:12:33,839
was done by Sean Villanueva like with a

308
00:12:33,839 --> 00:12:35,680
sheath-cut rope, like from the

309
00:12:35,680 --> 00:12:37,760
beginning. On I think the second pitch or

310
00:12:37,760 --> 00:12:39,839
the third pitch he had a stone fall, and

311
00:12:39,839 --> 00:12:41,680
his rope already got cut. Like the sheath

312
00:12:41,680 --> 00:12:43,200
was completely damaged, and he did the

313
00:12:43,200 --> 00:12:45,600
whole Fitz Traverse with this rope then.

314
00:12:45,600 --> 00:12:48,320
He like rappelled a lot over it.

315
00:12:48,320 --> 00:12:52,160
Does the percentage of sheath versus core strands...

316
00:12:52,160 --> 00:12:54,869
-It's not always the same.
-In sport climbing ropes?

317
00:12:54,899 --> 00:12:56,480
Yeah or like climbing

318
00:12:56,480 --> 00:12:58,160
-ropes in general. 
-It's not always the

319
00:12:58,160 --> 00:12:59,200
-same now?
-No.

320
00:12:59,200 --> 00:13:01,920
-And what does it depend on? 
-Well for us

321
00:13:01,920 --> 00:13:03,920
it depends on what kind of rope we want

322
00:13:03,920 --> 00:13:06,399
-to make. 
-Sport Climbing.

323
00:13:06,399 --> 00:13:08,179
Wait let me show you something.

324
00:13:08,179 --> 00:13:10,480
-Show me something. 
-Okay so you have the interplay

325
00:13:10,480 --> 00:13:13,120
of both the percentage of material that

326
00:13:13,120 --> 00:13:16,079
is the sheath but also

327
00:13:16,079 --> 00:13:18,800
how the sheath was constructed. For example

328
00:13:18,800 --> 00:13:22,800
here on this rope we have more sheath

329
00:13:22,800 --> 00:13:24,720
twines so

330
00:13:24,720 --> 00:13:27,839
if you would count these

331
00:13:27,839 --> 00:13:31,440
singular ones, they are much more than on

332
00:13:31,440 --> 00:13:34,090
-this sheath. 
-oh yeah that's almost double, no?

333
00:13:34,639 --> 00:13:37,360
No it isn't but it's just a slight

334
00:13:37,360 --> 00:13:39,600
difference. But if you check out the

335
00:13:39,600 --> 00:13:40,959
surface

336
00:13:40,959 --> 00:13:44,800
you can see that here the little cubes

337
00:13:44,800 --> 00:13:47,600
that they form are smaller

338
00:13:47,600 --> 00:13:51,600
than on this one. So here we have a super

339
00:13:51,600 --> 00:13:54,399
fine surface of the of the sheath so if

340
00:13:54,399 --> 00:13:56,959
you for example would touch this one it

341
00:13:56,959 --> 00:13:59,120
-feels much rougher. 
-Yeah.

342
00:13:59,120 --> 00:14:00,880
so this is also what makes it more

343
00:14:00,880 --> 00:14:02,079
durable.

344
00:14:10,160 --> 00:14:12,240
So we are still very far from twenty but

345
00:14:12,240 --> 00:14:14,740
-what's the force? 
-Maybe I get some coffee huh? No?

346
00:14:14,740 --> 00:14:15,764
(Camera person) Yes!

347
00:14:15,764 --> 00:14:17,808
-It was already 3.4.

348
00:14:17,808 --> 00:14:20,399
It's increasing and increasing so the dynamic

349
00:14:20,399 --> 00:14:22,160
performance of the rope gets lower and

350
00:14:22,160 --> 00:14:23,580
lower and lower.

351
00:14:23,580 --> 00:14:26,959
This one here is our workhorse construction. It does not have

352
00:14:26,959 --> 00:14:29,440
any treatment but we're using the best

353
00:14:29,440 --> 00:14:31,920
and the finest yarns that we have to

354
00:14:31,920 --> 00:14:35,040
make this construction. And it also.. I

355
00:14:35,040 --> 00:14:37,680
would say you know it's as good as the

356
00:14:37,680 --> 00:14:39,680
-dry rope.
-So why

357
00:14:39,680 --> 00:14:41,920
not all ropes are made this way where we

358
00:14:41,920 --> 00:14:44,860
have finer construction?

359
00:14:44,860 --> 00:14:46,320
Because price matters.

360
00:14:46,320 --> 00:14:48,720
Yeah now I would like to see not 200 cycles

361
00:14:48,720 --> 00:14:53,040
-but 1000. 
-Yes they come here. 
-Oh really?

362
00:14:53,040 --> 00:14:56,110
Not to 2000 but to 500.

363
00:14:56,110 --> 00:14:58,720
I would climb with

364
00:14:58,720 --> 00:15:01,360
this one, and with this one. Or if i have

365
00:15:01,360 --> 00:15:04,560
A risky day I would choose this.

366
00:15:04,560 --> 00:15:06,689
Do you have risky days?

367
00:15:06,689 --> 00:15:07,489
Sometimes...

368
00:15:07,489 --> 00:15:10,639
Turns out size or diameter is

369
00:15:10,639 --> 00:15:13,199
not all that matters when we talk about

370
00:15:13,199 --> 00:15:16,000
durability, construction, and extra

371
00:15:16,000 --> 00:15:18,880
treatments might have a bigger impact.

372
00:15:18,880 --> 00:15:21,040
It's a crazy difference, no? Having in

373
00:15:21,040 --> 00:15:22,880
mind that all of them will run through

374
00:15:22,880 --> 00:15:24,480
the same process to the point where

375
00:15:24,480 --> 00:15:28,240
super thin 9.0 millimeters rope looked

376
00:15:28,240 --> 00:15:31,360
completely fine after 500 cycles of

377
00:15:31,360 --> 00:15:33,710
dragging it across the sharp edge...

378
00:15:33,710 --> 00:15:35,360
This one looks quite good.

379
00:15:35,360 --> 00:15:38,337
Like a little bit fuzzy but I would 
definitely use it.

380
00:15:38,337 --> 00:15:40,120
However much thicker

381
00:15:40,120 --> 00:15:43,279
9.5 millimeters rope, but old

382
00:15:43,279 --> 00:15:46,000
construction and no treatments, were

383
00:15:46,000 --> 00:15:47,699
completely done.

384
00:15:48,380 --> 00:15:51,839
My guess is five more falls and we snap it.

385
00:15:52,839 --> 00:15:55,440
-Maybe not
-I think we have to increase,

386
00:15:55,440 --> 00:15:57,559
otherwise... yeah let's increase.

387
00:15:57,559 --> 00:16:00,000
Everybody wants harder falls but it's already

388
00:16:00,000 --> 00:16:01,759
getting harder, we went from a two and a

389
00:16:01,759 --> 00:16:04,047
half to three and a half.

390
00:16:04,047 --> 00:16:06,300
To increase?

391
00:16:06,300 --> 00:16:09,159
You can just dropping keep dropping it. 
Yeah keep dropping it.

392
00:16:09,159 --> 00:16:11,279
So I will get coffee

393
00:16:11,279 --> 00:16:14,519
-what do you want? 
-Coffee.
-Espresso?

394
00:16:14,519 --> 00:16:15,519
-Lungo?
-Lungo if possible.

395
00:16:15,519 --> 00:16:17,390
-Are you asking the viewer? 
-With milk?

396
00:16:17,390 --> 00:16:20,329
-Are you sending it to the viewers? 
-You want a coffee?

397
00:16:20,329 --> 00:16:23,040
Now one interesting observation I got while

398
00:16:23,040 --> 00:16:25,759
I was making this intro animation,

399
00:16:25,759 --> 00:16:27,839
which by the way took me multiple days

400
00:16:27,839 --> 00:16:29,600
and multiple attempts,

401
00:16:29,600 --> 00:16:32,720
was that while the rope is new,

402
00:16:32,720 --> 00:16:35,360
the file glides over the rope very

403
00:16:35,360 --> 00:16:37,920
smoothly and it's pretty hard to make

404
00:16:37,920 --> 00:16:40,320
any damage to it. But once the rope

405
00:16:40,320 --> 00:16:43,600
starts becoming fuzzy, it becomes easier

406
00:16:43,600 --> 00:16:46,320
to make some extra damage so it felt

407
00:16:46,320 --> 00:16:47,440
like the

408
00:16:47,440 --> 00:16:49,839
fuzziness or the damage to the rope is

409
00:16:49,839 --> 00:16:52,320
kind of exponential the worse it gets

410
00:16:52,320 --> 00:16:55,440
the easier it is to make it even worse.

411
00:16:55,440 --> 00:16:57,440
Oh yeah let's do again. Only six

412
00:16:57,440 --> 00:16:59,279
strands left.

413
00:16:59,279 --> 00:17:01,920
-(Offscreen) Whoah!
-(Offcreen) So... okay

414
00:17:01,920 --> 00:17:04,629
So you can come back already with your
coffee!

415
00:17:04,629 --> 00:17:07,120
So the force went lower, but one

416
00:17:07,120 --> 00:17:08,959
-strand snapped.
-(Offscreen) No, two!

417
00:17:08,959 --> 00:17:11,520
Two snapped but the sound of the strand

418
00:17:11,520 --> 00:17:13,439
snapping was (vocalizes)

419
00:17:13,439 --> 00:17:16,160
Is it bad if I scream behind the camera?

420
00:17:16,160 --> 00:17:17,760
It's not the sound that you want to hear

421
00:17:17,760 --> 00:17:19,679
when you're out climbing.

422
00:17:19,679 --> 00:17:23,199
Okay: the fun part. How fuzzy is too fuzzy

423
00:17:23,199 --> 00:17:26,319
or how soft the rope is too soft? When

424
00:17:26,319 --> 00:17:29,039
-should people actually cut it? 
-I mean you

425
00:17:29,039 --> 00:17:31,039
pull the rope through your hands to

426
00:17:31,039 --> 00:17:33,280
check the ropes. This you should do on

427
00:17:33,280 --> 00:17:35,120
-a regular basis. 
-And what are you doing

428
00:17:35,120 --> 00:17:37,039
-when you're pulling?
- Well, on the one hand

429
00:17:37,039 --> 00:17:40,080
I feel the rope so I feel how the

430
00:17:40,080 --> 00:17:43,360
rope behaves. If it's super soft, if it's

431
00:17:43,360 --> 00:17:45,280
thicker, and at the same time you know

432
00:17:45,280 --> 00:17:47,840
you you pull it over your finger and you

433
00:17:47,840 --> 00:17:50,000
look at it so you do like a visual

434
00:17:50,000 --> 00:17:51,660
inspection.

435
00:17:56,799 --> 00:17:59,120
Beautiful rope. Would whip.

436
00:17:59,120 --> 00:18:01,919
-Would you whip?
-You would whip.

437
00:18:01,919 --> 00:18:04,880
Oh the force went lower again

438
00:18:04,880 --> 00:18:06,720
so basically the less core strands we

439
00:18:06,720 --> 00:18:08,760
have, the better the rope is.

440
00:18:08,760 --> 00:18:10,880
The softer the catch

441
00:18:11,440 --> 00:18:13,679
I wouldn't see it that way but...

442
00:18:13,679 --> 00:18:15,679
If you want a soft catch just break the

443
00:18:15,679 --> 00:18:16,559
rope.

444
00:18:16,559 --> 00:18:18,880
So let's say I'm running my rope through

445
00:18:18,880 --> 00:18:21,520
my hand and I find a spot which is

446
00:18:21,520 --> 00:18:24,480
softer. So how do I know if it's already

447
00:18:24,480 --> 00:18:26,614
bad or...

448
00:18:26,614 --> 00:18:28,400
First consider the whole rope. I mean

449
00:18:28,400 --> 00:18:30,320
if you have a really soft rope because

450
00:18:30,320 --> 00:18:31,919
they're... I mean some ropes are

451
00:18:31,919 --> 00:18:34,080
already soft when you you buy them in

452
00:18:34,080 --> 00:18:36,240
the store. I would say that our ropes

453
00:18:36,240 --> 00:18:38,880
are a little bit stiffer in general and

454
00:18:38,880 --> 00:18:40,460
we do that to make them more

455
00:18:40,460 --> 00:18:42,320
long-lasting but if your whole rope is

456
00:18:42,320 --> 00:18:44,170
very soft and you have a spot which is

457
00:18:44,170 --> 00:18:46,559
just a little bit softer,

458
00:18:46,559 --> 00:18:48,880
I would not like say oh

459
00:18:48,880 --> 00:18:50,960
that's super dangerous, but if you

460
00:18:50,960 --> 00:18:51,679
have

461
00:18:51,679 --> 00:18:53,600
the rope is generally really stiff and

462
00:18:53,600 --> 00:18:56,000
then you have one spot with this ultra

463
00:18:56,000 --> 00:18:57,440
soft then you know

464
00:18:57,440 --> 00:19:00,320
something is not right there. And exactly

465
00:19:00,320 --> 00:19:02,080
what's not right there

466
00:19:02,080 --> 00:19:04,880
there are so many things that it
could be.

467
00:19:04,880 --> 00:19:07,280
So as an example if I would be

468
00:19:07,280 --> 00:19:09,760
just looking into this piece of the rope,

469
00:19:09,760 --> 00:19:11,840
it would be pretty difficult to say how

470
00:19:11,840 --> 00:19:15,315
soft it needs to be and if I should cut it.

471
00:19:15,315 --> 00:19:18,559
But if I compare it to the middle of the

472
00:19:18,559 --> 00:19:21,280
same rope, I can clearly see a big

473
00:19:21,280 --> 00:19:24,240
difference. So this clearly is far from

474
00:19:24,240 --> 00:19:26,400
what it used to be and it's better to

475
00:19:26,400 --> 00:19:28,880
cut this end. And if you want some tips

476
00:19:28,880 --> 00:19:33,039
on cutting ropes check out this video.

477
00:19:35,919 --> 00:19:38,000
I don't think we can do another one.

478
00:19:38,000 --> 00:19:39,919
Unfortunately the rope kept stretching

479
00:19:39,919 --> 00:19:42,320
and stretching and stretching until we

480
00:19:42,320 --> 00:19:44,559
almost reached the bottom of the drop

481
00:19:44,559 --> 00:19:46,559
tower and we couldn't do any more

482
00:19:46,559 --> 00:19:47,679
testing,

483
00:19:47,679 --> 00:19:50,799
however we decided to show what happens

484
00:19:50,799 --> 00:19:53,440
if you have 80 kilograms of mass hanging

485
00:19:53,440 --> 00:19:56,320
on only core strands and you touch the

486
00:19:56,320 --> 00:19:58,640
core strands with the knife.

487
00:19:58,640 --> 00:20:00,960
Cut test

488
00:20:04,240 --> 00:20:07,440
-It just barely touched it.
-What did you do?!

489
00:20:07,440 --> 00:20:10,480
You went too long.

490
00:20:10,480 --> 00:20:11,760
What happened?

491
00:20:11,760 --> 00:20:14,400
but what happened

492
00:20:14,559 --> 00:20:16,559
so it didn't broke so i was right with

493
00:20:16,559 --> 00:20:19,440
10 to 20 right

494
00:20:19,440 --> 00:20:21,360
yes thanks

495
00:20:21,360 --> 00:20:24,000
so basically what we got is

496
00:20:24,000 --> 00:20:28,400
running very damaged rope on relatively

497
00:20:28,400 --> 00:20:29,600
hard dish

498
00:20:29,600 --> 00:20:32,159
maybe to normal foil yeah real case

499
00:20:32,159 --> 00:20:35,200
scenario ripped the sheath of the rope

500
00:20:35,200 --> 00:20:37,120
in just two falls which is very

501
00:20:37,120 --> 00:20:38,799
dangerous but then it was good to see

502
00:20:38,799 --> 00:20:41,039
that the rope did not snapped

503
00:20:41,039 --> 00:20:43,840
and only the core strands kept holding

504
00:20:43,840 --> 00:20:44,880
for

505
00:20:44,880 --> 00:20:48,720
multiple more falls so

506
00:20:48,960 --> 00:20:51,200
but when he touched barely with the

507
00:20:51,200 --> 00:20:53,120
sharp knife the core strands he just

508
00:20:53,120 --> 00:20:55,520
barely touched it it snapped

509
00:20:55,520 --> 00:20:57,039
so if your

510
00:20:57,039 --> 00:20:58,720
shift gets away

511
00:20:58,720 --> 00:21:01,039
and then your rope runs across something

512
00:21:01,039 --> 00:21:03,200
sharp on the rock super dangerous

513
00:21:03,200 --> 00:21:04,240
yeah

514
00:21:04,240 --> 00:21:05,840
i think now we're coming to the second

515
00:21:05,840 --> 00:21:07,919
scenario you wanna you wanna show when

516
00:21:07,919 --> 00:21:10,400
it comes to sharp edge scenarios yeah

517
00:21:10,400 --> 00:21:13,760
like the ropes don't have this high

518
00:21:13,760 --> 00:21:16,159
safety margin

519
00:21:16,159 --> 00:21:18,720
i hope that you are subscribed because

520
00:21:18,720 --> 00:21:20,799
the next experiment that i'm gonna show

521
00:21:20,799 --> 00:21:23,280
in the next video is gonna blow your

522
00:21:23,280 --> 00:21:26,559
mind and probably change a little bit

523
00:21:26,559 --> 00:21:28,799
the way you care about your climbing

524
00:21:28,799 --> 00:21:30,720
equipment

525
00:21:30,720 --> 00:21:34,480
okay now i need you to pee

526
00:21:34,480 --> 00:21:37,799
come on