I like the new "How not 2" concept. Have a guest over. Let him/her talk about their sport / occupation. It's nice to see someones amazement about the results.
Notes on synthetic fibers: Dyneema, Spectra, and Dynex are 3 brand names for Ultra High Molecular Weight Polyethylene (UHMWPE), Zylon is a brand name for Polybenzobisocazole (PBO), Vectran is a brand name for a liquid crystal polymer (an aromatic polyester produced by the polycondensation of 4-hydroxybenzoic acid and 6-hydroxynaphthalene-2-carboxylic acid, which is far too long to say), Dacron and Diolen are brand names for Polyester, Nylon is a brand name for Polyamide, and Kevlar and Technora are brand names for Aramid. In "Splicing Modern Ropes, A Practical Handbook" Jan-Willem Polman has a table of properties for these fibers (and polypropylene).
Been waiting for the expansion into more extreme sports content since you mentioned it. Like for the simple fact you’re venturing into uncharted territory.
This was super helpful. I’ve been climbing since 2007 and recently got into skydiving. I didn’t love the idea of the soft shackles initially, partially because of the fabric-on-fabric connection, and partially because they just “appear” weaker than stainless steel maillons. This was an interesting experiment, thanks for posting!
Just as a first look as I was watching this I think why they have to be double wrapped so tightly is because you don't want any slack space so the incorrect one has a lot more slack space so that there's room for it to shock load I think is why the riggers for the parachutes probably don't like to see them connected incorrectly. Because small dyneema or Spectra in this case does not like to be shock loaded. This one might be a really good one to test on the Drop Tower once you're finished building.
I would think keeping the softlinks tight also decrease the risk of friction damage and snagging the eyes of the canopy lines on the tab. The tabs aren't tacked to the riser on a main canopy so they could potentially rotate outside of the riser. A tight fit helps keep them in place. When the canopy inflates, lots of lines get pulled tight really fast. You try to avoid abrasion and snagging hazards. Plus the obvious advantage of increased strength from the double wrap. Just my 2 cents as a former rigger.
I'm still fairly "new" to this channel. I feel like I really haven't ran into a "rant" like the one seen @11:11 before from you. Maybe it's just the fact that I'm used to you ranting about highline stuff that I'm sort of "subconsciously" informed of. I think it would be pretty fun/cool for you to rig up your own sky diving "rig" (could be any sport that you aren't aware of) blindly with just the information you know from your break tests and such and have your guests "assess" what you have rigged. Love all the content! Glad to have had you and the community while learning to longline and dip into highlining! :)
I'm flying my paraglider with softlinks, both on the risers and for the connection to the harness. The softlinks to the harness are huge compared to the riser ones and built directly into the harness structure. Guess that's why they overspecd those so massively, as they can't be replaced.
Can you test soft links double wrapped, but instead of going through the loop and over the tab, just go over the tab. I've seen them installed this way in the past by a jumper who didn't know better. Thankfully they didn't get off the ground without being routed the correct way.
This was interesting! They are much stronger than I expected. I'm not a rigger, but I think it's worth noting that there may be reasons other than strength for installing slinks the way the manufacturers recommend. For example increased wear on the lineset, and the tab being a snag hazard if it's sticking out.
Would be really curious to know how many KN of force are actually created by the switch from free fall to open canopy catching you. Before you get your drop tower all done you could do some line scale 3's set up on a skydiver.
I've studied under one of the people responsible for perfecting liquid crystals (the LC in LCD for those who don't know) and NEVER knew they could be polymerised into strands like that. So cool
Can you test the dyneema using a tensionless hitch sometime? I’m interested in seeing more of the true strength without the harsh bend radius that knots produce.
@@somecsguy9824 no, force does not need to be equalised between 4 separate strands. In some kind of accident for example. Safety ratio is a factor of comparing break load devided by working load, usually 3 - 10. Especially If your life depends on it. Since things could be damaged, missused etc, or used hundred of times. A acceptable risk of death is obviously really small so things need to be bomber rather than just enough, if it should hold a million tries.
Please please make more skydiving material related videos! To be nitpicky though, I don't think those are Squirrel slinks. AFAIK those are white with blue threads and black tabs. Not that it matters though, all slinks are probably mostly the same. ...or are they? Time for more break tests!
That would be interesting to test in depth. We rarely use washers in our tests and generally achieve results above MBS. It appears that washers would only make a difference when the anchor is pulled in tension, which is much less common. We also find that hangers rarely slip off the bolt. The only example i can think of is a 1/2"hole hanger on 3/8" TitenHD. That still didn't happen till well above MBS.
Been waiting for skydive gear break tests! I don't jump yet, but my wife has her B license and is quickly approaching 200 jumps. She keeps trying to get me to take AFF and work on getting my license, but it still terrifies me. Maybe break tests will help conquer that fear lol.
Interesting test on the 12 brade dynema cord. They use a lot of it in the marine environment as well as in kitesurfing... if you know anyone that splices their own kite lines and takes part in king of the air megaloop competitions it would be awesome to test their line strengths.
Small correction, those slinks you're breaking aren't SQRL slinks (which i'd suspect are stronger.) Not sure who makes those green ones, possibly homemade?
I've heard that not only are slinks field serviceable, they are also stronger than quick links, and lighter. Basically zero advantage to quick links. Also nice skydive at the end!
Scary at 10kn. I know he says there are 4 of them, but if one snaps and you have only 3 corners of your chute connected it's not going to fly? If so, sounds like just one of them breaking is serious business
You know what the most boring part of skydiving is? A folded parachute in the back of a car, in a parking lot. Love the expansion of hownot2, but the video would be more interesting opening with some context...jumps, etc
Get rid of the vet wrap, it's a shitty idea in search of a problem. At best it holds sand against your lines and makes an inspection impossible. If you are leaving your slider at the bottom of your lines causing wear, go ask someone you trust how to not do that!
please please please break paraglider lines. I hear those guys throw out all different numbers on an almost daily basis. they claim everything from 300 a line to 1000 depending on their story.
Totally not super good enough when installed wrong in any way!!! More than the strength of the soft link the thing that will likely happen is the tab will just slip out of the eye and that's the end of the story. Because it's not always under pressure and when you pack the parachute, moves everything around, put it in the container and do it over and over again it is very likely to slip out. Equivalent of doing a bowline without a stopper knot at the end and go climbing all day with it
The slow pull test does seem insufficient to draw the conclusions they drew. Looking forward to the drop tower. I hope he will dynamically test these in the future to add some more data.
Check out our new store! hownot2.store/
I like the new "How not 2" concept.
Have a guest over. Let him/her talk about their sport / occupation.
It's nice to see someones amazement about the results.
Notes on synthetic fibers: Dyneema, Spectra, and Dynex are 3 brand names for Ultra High Molecular Weight Polyethylene (UHMWPE), Zylon is a brand name for Polybenzobisocazole (PBO), Vectran is a brand name for a liquid crystal polymer (an aromatic polyester produced by the polycondensation of 4-hydroxybenzoic acid and 6-hydroxynaphthalene-2-carboxylic acid, which is far too long to say), Dacron and Diolen are brand names for Polyester, Nylon is a brand name for Polyamide, and Kevlar and Technora are brand names for Aramid.
In "Splicing Modern Ropes, A Practical Handbook" Jan-Willem Polman has a table of properties for these fibers (and polypropylene).
Been waiting for the expansion into more extreme sports content since you mentioned it. Like for the simple fact you’re venturing into uncharted territory.
The goal is to put canyon's out saturday! It's fun trying other stuff.
This was super helpful. I’ve been climbing since 2007 and recently got into skydiving. I didn’t love the idea of the soft shackles initially, partially because of the fabric-on-fabric connection, and partially because they just “appear” weaker than stainless steel maillons. This was an interesting experiment, thanks for posting!
Just as a first look as I was watching this I think why they have to be double wrapped so tightly is because you don't want any slack space so the incorrect one has a lot more slack space so that there's room for it to shock load I think is why the riggers for the parachutes probably don't like to see them connected incorrectly. Because small dyneema or Spectra in this case does not like to be shock loaded. This one might be a really good one to test on the Drop Tower once you're finished building.
I would think keeping the softlinks tight also decrease the risk of friction damage and snagging the eyes of the canopy lines on the tab. The tabs aren't tacked to the riser on a main canopy so they could potentially rotate outside of the riser. A tight fit helps keep them in place. When the canopy inflates, lots of lines get pulled tight really fast. You try to avoid abrasion and snagging hazards. Plus the obvious advantage of increased strength from the double wrap. Just my 2 cents as a former rigger.
I'm still fairly "new" to this channel. I feel like I really haven't ran into a "rant" like the one seen @11:11 before from you. Maybe it's just the fact that I'm used to you ranting about highline stuff that I'm sort of "subconsciously" informed of.
I think it would be pretty fun/cool for you to rig up your own sky diving "rig" (could be any sport that you aren't aware of) blindly with just the information you know from your break tests and such and have your guests "assess" what you have rigged.
Love all the content! Glad to have had you and the community while learning to longline and dip into highlining! :)
WHAT?
RYAN. I love this new channel. THANK YOU
Keep doing the AMAZING WORK
I like the new kN animations!
Please do a video of your old memorial highline stuff...
I love the new topic! Good start with Expansion (including the first canyoning episode)
Good job Ryan
Wow! Im skydiver and basejumper! And this video is very interesting and cool! Tnx
I'm flying my paraglider with softlinks, both on the risers and for the connection to the harness. The softlinks to the harness are huge compared to the riser ones and built directly into the harness structure. Guess that's why they overspecd those so massively, as they can't be replaced.
That was cool. Love the sky diving clip at the end.
So much to test for BASE.. Ask Andy about 80lb break cord and static line jumps. Lots of alternative static line materials to test as well.
Could test improperly routed 3-ring systems as well!
Static line with double wrapped condoms, apparently work from 42m, just wanna know how sketchy it actually was
Can you test soft links double wrapped, but instead of going through the loop and over the tab, just go over the tab. I've seen them installed this way in the past by a jumper who didn't know better. Thankfully they didn't get off the ground without being routed the correct way.
This. AKA, "Death Slinks".
This was interesting! They are much stronger than I expected.
I'm not a rigger, but I think it's worth noting that there may be reasons other than strength for installing slinks the way the manufacturers recommend. For example increased wear on the lineset, and the tab being a snag hazard if it's sticking out.
As a polymer scientist that has worked with liquid crystal polymers this is the last place I expected to see them!
Moving on up in the lab equipment arena! Sweet new content brother. Can’t wait for the rest of the teased new stuff.
Would be really curious to know how many KN of force are actually created by the switch from free fall to open canopy catching you. Before you get your drop tower all done you could do some line scale 3's set up on a skydiver.
Lmao love the coban. It’s short for cohesive bandage because it sticks to itself. Comes in so many colors so you can customize your death jump
I've studied under one of the people responsible for perfecting liquid crystals (the LC in LCD for those who don't know) and NEVER knew they could be polymerised into strands like that. So cool
Excellent video!
I'd love you see you do these tests with the lines on the parachute and with the webbing used to make the harness.
Keep them coming!! Love it!
This was a great episode. Please make more like it!
Loving the field of green in the background. Makes me think of the drop tower.
If you built it, they will come.
Can you test the dyneema using a tensionless hitch sometime? I’m interested in seeing more of the true strength without the harsh bend radius that knots produce.
Also... Id like to see a splice test along side a knot test.
Yeah Bro! Stoke to see you doing your AFF!
Nice!
But remember you need a relevant safety ratio..
And if one of those 4 soft links would fail, would the shute even work?
Sure, but you'd need to hit 40+ kN, at which point your body would be a sack of bone meal. Mmmmm :D
@@somecsguy9824 no, force does not need to be equalised between 4 separate strands. In some kind of accident for example.
Safety ratio is a factor of comparing break load devided by working load, usually 3 - 10. Especially If your life depends on it.
Since things could be damaged, missused etc, or used hundred of times.
A acceptable risk of death is obviously really small so things need to be bomber rather than just enough, if it should hold a million tries.
Did you ever test the hard links or rapide links I think you called them mallions in this video?
Please please make more skydiving material related videos!
To be nitpicky though, I don't think those are Squirrel slinks. AFAIK those are white with blue threads and black tabs.
Not that it matters though, all slinks are probably mostly the same.
...or are they? Time for more break tests!
Ryan can you please test if not having washers between hangers and bolts has an effect on breaking strength
That would be interesting to test in depth. We rarely use washers in our tests and generally achieve results above MBS. It appears that washers would only make a difference when the anchor is pulled in tension, which is much less common. We also find that hangers rarely slip off the bolt. The only example i can think of is a 1/2"hole hanger on 3/8" TitenHD. That still didn't happen till well above MBS.
Been waiting for skydive gear break tests! I don't jump yet, but my wife has her B license and is quickly approaching 200 jumps. She keeps trying to get me to take AFF and work on getting my license, but it still terrifies me. Maybe break tests will help conquer that fear lol.
check my channel then. It's only about breaking skydiving gear
new channel style, love it! nice and precice
What if you did a pull test with the canopy line sets? That changes the D/d ration correct?
Interesting test on the 12 brade dynema cord. They use a lot of it in the marine environment as well as in kitesurfing... if you know anyone that splices their own kite lines and takes part in king of the air megaloop competitions it would be awesome to test their line strengths.
what a cool video really interesting seeing new things
I was hoping we'd get to see ryan skydive. Especially since there is a well known spot in Lodi.
Did Ryan make a dmt reference?
4 of them for one parachute, but do they always get loaded evenly?
Great video! Another related sport/hobby idea: How Not 2 Paramotor?
Its on the list. I need the LS3s first then we are going to do some rad science
What is that red-blue thing on the wall?
loving all this cross-platform action
Small correction, those slinks you're breaking aren't SQRL slinks (which i'd suspect are stronger.) Not sure who makes those green ones, possibly homemade?
Those are from Rigging inovations they came stock on the Curv. :-)
They are Aerodyne softlinks by the look of them
RI made your risers, your canopy manufacturer makes your softlinks.
I've heard that not only are slinks field serviceable, they are also stronger than quick links, and lighter. Basically zero advantage to quick links.
Also nice skydive at the end!
Super good enough.
Tandem soft links are used in BASE, wonder what thier integrity is?
Big soft shackle presence in sailing.
Literally just finished editing a sailing soft shackle video!
would be cool to see more videos and go on an actual skydive like how you did when someone took you canyoneering for the channel
There’s a bowline knot called lees link bowline and the knot has no sharp bents. It’s supposed to be strong. Would love to see tied in dyneema
Why does skydiving look less sketch than highlining?
such a great great channel
As a skydiver myself, at those forces I'd be more worried about my canopy ripping
I love these videos. Only shitty thing is in order for me to make a pic i have to convert everything to the metric system.
Completely sure Eric's name isn't Sharlto Copley?
That e61 thou
Give it a try? that is pretty far along in a AFF Course my friend
Scary at 10kn. I know he says there are 4 of them, but if one snaps and you have only 3 corners of your chute connected it's not going to fly? If so, sounds like just one of them breaking is serious business
Enjoy any kinda content from y'all. Skydiving? Bring it on!
AFF1!
So what you need to do then is use 4 line scale 3's so you can have one at each soft link and do a sky dive 😁
You need to colab with AvE
You're smarter than you let on ;)
Lodi is probably the best place you can learn how not to skydive 🤣🤣🤣
the wind hurt me
Why did you not skydive for Thai video… oh
How Not 2 Skateboard?
What would you test?
@@HowNOT2 Getting slammed! Then you need an accelerometer and a dummy, and you could test what factor 2 whips do to your brain.
That is a smuggles rig, LOL
1 Kn is about 101kg or 220 pounds.
Analysis of accidents would be interesting, especially where equipment failure played a part.
New shirt suggestion: something catchy about taking bends like a champ…couldn’t hurt to have a vaguely sexual or punny twist in the reference.
do kite surfing
You know what the most boring part of skydiving is? A folded parachute in the back of a car, in a parking lot. Love the expansion of hownot2, but the video would be more interesting opening with some context...jumps, etc
Get rid of the vet wrap, it's a shitty idea in search of a problem.
At best it holds sand against your lines and makes an inspection impossible.
If you are leaving your slider at the bottom of your lines causing wear, go ask someone you trust how to not do that!
please please please break paraglider lines. I hear those guys throw out all different numbers on an almost daily basis. they claim everything from 300 a line to 1000 depending on their story.
Totally not super good enough when installed wrong in any way!!! More than the strength of the soft link the thing that will likely happen is the tab will just slip out of the eye and that's the end of the story. Because it's not always under pressure and when you pack the parachute, moves everything around, put it in the container and do it over and over again it is very likely to slip out.
Equivalent of doing a bowline without a stopper knot at the end and go climbing all day with it
The slow pull test does seem insufficient to draw the conclusions they drew. Looking forward to the drop tower. I hope he will dynamically test these in the future to add some more data.
If at first you don’t succeed…. skydiving is not for you.
If at first you don't succeed, skydiving is not for you.
Buddy if you install your soft links incorrectly, you are not gonna live “anyway”.
It's never good enough in skydive. Use proper 2 loops ffs.
@ 4:35 look at those red eyes 👀 😮💨🥴