My 1st break test video! Sewn loops on slackline webbing
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- čas přidán 5. 09. 2024
- Here are 32 break tests to compare how sewn loops hold up on webbing. We compare the strength of the loops that I had done by a local source at the jump center near where I live with the strength of webbing in weblocks. Bad example of leash on highline photo credit to Ali Reza (he was joking btw)
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At 9:15 you can see the biner on the backup webbing whip up and down causing the gate to open.
Thanks for doing all this testing!
Ben Wilkinson woa! Havent seen that before. Crazy!
Thanks for pointing that out! Always wanted to actually see this!
Really appreciate all your work here Ryan! Also really appreciate your annunciation of 'so-en'!!! Thanks a million
Doing a lot more on them so-en loops... coming soon-ish! :)
Thanks for all the great highlining knowledge. No way I'll ever highline now that I know all the ways I can die. That being said it would be interesting to see how line lockers compare to the sewn loops and web locks.
For sure. I will add this to my list. I will do them unpadded and badly and then I will do them padded and on approved connectors too.
I took your advice from the woopie sling video, and bought the Samson splice book the first paragraph states that MBS is tested/ certified with an eye splice on both ends .
So a proper eye splice( LOCK STICHED; NOT BRUMMELLED) dose not reduce MBS.
WOOPIE SLING IS STATED AS "70% OF MSB." USING 3.5FID BURIED AND A LOCKING BRUMMEL. MAKING THE MINIMUM LENGTH FOR ANY WOOPIE 7 FID + FIXED EYE SIZE.
HOWEVER THE BRUMMEL IS WHAT COST 30% LOSS OF MBS..
DO YOU WANT TO CONFIRM SAMSON'S PUBLISHED STATEMENT? THAT THE LOCKING BRUMMEL COST 30% MBS.
It might be tough to find someone to sew it for you, but I’d love to see break tests on webbing with the bar tack pattern adopted by Squirrel/Asylum base. They’re an oval with circles in the center, to avoid sharp corners that amplify stress at that point.
I have not seen that pattern before. Do you have to spin the webbing around as it stitches because that might be tricky? Can you send me a picture of it on fb messenger?
That's a super cool idea ! I am really curious about this as well.
A much anticipated video, thanks!
awesome video
For more compact joins, the strength should be proportional to the total number of stitches x the tensile strength of the thread.
Nice video Ryan !! I think it's a good idea to put some text indicating the breaking strength in the next videos, for those who are not very good in English, like me. xD
Kênio Barbosa did you see the chart or the link to the chart in the description?
cool video:) maybe it would be interesting to see a break test with a Thermal camera
Moritz Wirth i will keep my eye out for someone who might have one
Great Video!!
Thank You!
What Brand and Model of sewing machine have your friend?
Hi! What type of thread was used on a stiches? Any specs? Wanna lighten my backpack for simple slacklining, leaving one weblock at home.
#69 bonded thread is what i used. It is a bit small so i recommend 15 official bar tacks and not a hand sewing machine. At least 40 plus threads per bar. #138 thread is on balance community's sewn loops and those are bomber but require a bigger machine. Whatever you do, test your loops in a park down low as tight as you can make it with a 15:1 or 45:1. Make sure they are bomber before you use them up high.
Break test a but plug¿
Hi Ryan, is the bar tack stitch stronger than the box stitch?
We are going to test 5 different patterns to test it on nylon and poly. A w shape tends to have the most strength from what ive researched and tested so far.
Does type 18 work for a primitive tensioning system??
Yes. It just is stretchy so its hard to get it tight enough to not touch ground in middle if it is too long
Hi! Is it possible to measure strings's (used to sewn loops) average breaking strength? About sewn loops... Is the loop lengths affect on the breaking strength? I mean on short loops first break inner sewn?
Stitching pattern could affect bar tacks as much as the string/thread used in bar tack. Hard to test something that probably breaks at 0.10kgf. Loop length can only be a problem if super super small and if using a large pin so the angle of the webbing is 45 degrees or more, literally pulling the webbing apart from inside the loop if that makes sense. If the loop was a meter long I don't think it would weaken it at all. Does that help?
yes of course. you will surprise how strong the strings is. i heared that the main problem of sewn is to mutch strings according to webbing. in best case it must be the same as webbing material. and it will be cool to compare weaker strings and many stitches and stronger one with less stitches.
i don't mean one meter loops be weaker. i mean it will be stronger on fat pin.
Sergey Tsimbalov if the webbing broke at the loop i think a fatter pin would help but as long as my stitching breaks before anything else then the pin is not hurting or helping at this point.
damn, my english is so bad for this :))
multiply stitches allow you to use weak strings. if you applay force very gently and divide it to all of them - they are live. but if it was uneven load then they will break, one by one. so, if you use short loop on the FAT pin then first stiches (closest to pin) will be heavily loaded with vertical force directed perpendicular to the webbing.
If I am calculated it correctly:
F_first_stitch_vertical:= - 2*(F_total*D_pin)/(Pi*D_pin-4*L_loop)
Where:
F_total - webbing force for example 10 kn,
D_pin - pin diameter for example 12 mm,
L_loop - flat loop length for example 100mm
F_first_stitch_vertical - vertical component of force (actualy double of it) applyed to the first sewn from pin in this example = 67.5 kgf
Sergey Tsimbalov i think i understand. If the string is pulled 1 at a time and not evenly it will break one at a time because they are not working together. A fat pin will put too much force on stitches closest to fat pin. What is interesting to me is that the static webbings hold more % than the stretchier webbings. I can hear the string breaking before the loop breaks on the stretchy webbing.
unclosed biner ar 9:15 ;)
How to Make Soft Shackles?
ZZP Zing Pheonix czcams.com/video/9vOW1sIkhIQ/video.html