How Strong are Arborist Bridges - New vs Old
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- čas přidán 29. 04. 2022
- We broke 2 new arborist bridges and 3 old ones from Nick Markley & Hunter Vincent. They all broke super good enough above 23kN which is much stronger than your back. We weren't sure how to pull them but we decided on doing them in a U shape with a barrel knot jammed into quicklinks. If you pulled to crazy forces on your harness, it would squeeze you silly until it was pulling in the U shape or basket position we did in this test.
1st test (new bridge) broke at the knot where it jammed the quicklink at 25.59kN
2nd test (new bridge) broke at the knot where it jammed the quicklink at 25.85kN
3rd test (old bridge) broke at the knot where it jammed the quicklink at 22.89kN
4th test (old bridge) broke at the knot where it jammed the quicklink at 23.27kN
5th test (old bridge) broke at the carabiner at the load cell!!! at 26.23kN
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Introduction
01:30 - Testing the new bridge
02:48 - Testing with a smaller quick link
03:47 - Testing the old bridge
04:25 - Breaking Nick’s bridge
05:46 - Super Good Enough
We broke some 1/2" rope, new and old in this other episode czcams.com/video/xwajKp7x1X4/video.html
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Huge potential audience in the tree world out there. I have a bunch of old gear I want to send you to break. I run two bridges on my saddle after I heard about two deaths from bridge failures.
We are trying something to see if it is sustainable extra content. www.hownot2.com/sendusyourstuff
@@HowNOT2 Even if it's not a huge audience, I can tell you that this content is gold for those of us who it pertains to. Hope to see more!
I just had a weaver cougar bridge break Friday. Luckily I had two and was double tied in.
HN2 - FYI: the link to ‘sendups your stuff’ is broken.
Wear ?
If you want to attract arborists make sure to have plenty of shiney hi-viz colors in your videos that match helmets. And then drop test rope runners, akimbos, and unicenders. Then cut steel core lanyards under mild tension with chainsaws and then show impact forces with side swings when bailing onto a backup anchor at your height. And then survey everyone on their favorite cat rescue technique. And then go climb some big as trees and learn to traverse. Play with rigging angles for tying into weakened trees. Find trees being removed and break them. Tye into bad spots and break them out. Investigate rapid descent techniques when swarmed by bees. Do a crane job and show the forces and difficulty of choking off unstable unbalanced tree parts. Break test synthetic cabling systems like cobra. Break test chainsaw lanyards that are meant to break when the saw is stuck and being pulled down with the piece.
Break test controversial anchor points in trees! Yes!
testing tie in points would be awesome! I'm sure that the 1.5" maple branch I'm tied in to will break before any climbing gear.
rapid descent techniques when swarmed by bees, spicy flies
Yes, can attest to that. Tree surgeon from NZ.
That last bridge broken was actually mine. I had a replacement ready for it so I gave it to Nick to send out for a testing, we definitely wanted to make sure it was super worn in. we hooked a rope grab to each end and ran it through an aluminum ring hundreds of times with our body weights. Super insane that it broke at 26 kn. There must be something chemically going on when you're impregnate that much aluminum into the textile. We got that ring so hot it was about smoking. Definitely would like to see more arborist info on your channel there is a lot of influential people in the industry that would love to partake in sharing some useful information.
Loving the arborist content
The drop tower would be the best way to test bridges. Most of the time they’re either going to fail from neglect and not being swapped out over time or a shock load from the climber falling. But think of this too, We sometimes carry similar weight to a big wall rack and then add a 5 to 14lb. Chainsaw, depending on the task.
Dude! Thank you. Increased my confidence ten fold in my bridge
Awesome to see you branching into the arborist gear sector!!!
I climb trees and work with an arborist, seeing these kind of videos is very interesting to see the literal gear that I use on a day-to-day basis being tested, because it makes me feel better knowing that other parts of my equipment will fail long before that ever does… i’m kidding though it is very interesting to watch this sort of stuff and I do enjoy the slightly educational side yet still down to earth and real to life attitude
Keep making arborist videos please!!! We love exploring the world of climbing principles and knowing how strong gear is !!
Second that.
What! So cool. I’m a slackliner and an arborist and I am here for it!
Thank you very much for doing some arborist gear. Please pretty please do more.
Yes, let me second that.
Thank you so much for doing this. The arborist industry is very unregulated unlike other similar climbing professions. This knowledge is really beneficial 👍
Loving the arborist content! So much potential for breaktesting with all the rigging & oddball stuff we do. Been watching for ages but stoked that you're focusing on my industry.
Love the channel already and as an arborist I’m excited for more arboricultural-related content! Great start.
I have this bridge on my harness and good to see strength in retired bridges but I couldn’t see any obvious reason they would’ve been retired to begin with.
That snapping sound is so satisfying!
To be fair, that is how arborists sound.
Can’t wait to see more! Would love to see you break a carabiner spar anchor. Lots of us establish our second tie in on a spar by putting our climbing line around the trunk and clipping it back to itself in a girth configuration using a carabiner as the connector. Technically side loading the carabiner, but how small of a trunk do you need to go to before the carabiner breaks significantly lower. Love this channel and really appreciate the work y’all do!
Hopefully you're at least using a steel biner!
I've broken the gate of an aluminium carabiner rigging like that, branch was maybe 50kg, and didn't drop any significant distance.
Sideload on the gate isn't rated for anything at all as it isn't an intended use. But it can go at only a couple of kn if loaded wrong enough.
Loving the arborist content thank you!!
Thank you for doing an arborist series!! Testing the used bridges was very interesting to see. Seattle tree care did a few videos a little while ago with Guilty of Treeson.
Yes, more arborist content, please!
The yellow colour is probably from the bark, fine sawdust or chain oil fog that tends to cover all our gear.
Finally some arborist stuff! Thanks mate! Grretings from Germany.
Yes finally! Love the arborist content:)
Arborist here. Love this new content idea
When I bought mine used it had a recall for the Bridge. I called the manufacturer and they sent a new one years after the recall notice. Its super good enough now!
Why was it recalled?
@@HowNOT2 Because any time an arborist gets injured, the gear is blamed 100% of the time. Doesn't matter what the arborist was doing or the decision he made prior to getting injured, the gear is always blamed.
@HowNOT2 Great question! Sorry someone in the know hasn't come back in and posted an answer. I believe some bridges were recalled because companies figured out Dyneema and the like were not suitable do to breakdown of fibers from repeated bending in the same area. And possibly low melting point came into it as well.
Alot of us were excited about dyneema for slings, bridges, etc. at first - then once your expression of an arborist running too long "ahh it's good enough" came into play I believe companies decided the bit of weight savings wasn't worth the risk.
My thoughts.
Thanks Ryan!
Very cool.
If you could break some off brand arborist saddles (like the ones on Amazon) that would also be an awesome part of an arborist series.
As an amateur arborist myself and recreational tree climber, I am super excited about these videos.
Thanks so much.
Wow the de-sheathing was super interesting and gave me piece of mind.
Really excited for the arbor content. Been thinking it'd be pretty awesome for you guys to cover the field, but ultimately figured it wouldn't happen. Stoked to see y'all expand your audience, knowledge/content base, and maybe even find some parts of the tree world yall could enjoy too. Good luck and safe travels.
That’s Globe 3000 tuefelberger bridge. Dyneema core, polyester cover. Just retired one of mine on a 10 year old tree motion saddle. I’ll send it to ya if you want. Thank you for the work you put into this, as an arborist for nearly 20 years I’m kind of a nerd about equipment and love this stuff.
I hope you weren’t running that bridge for 10 years…..
Turtle burger definitely recommends retiring the harness after 5 years of consistent use.
@@jimsupstateadventures6218 and I bet the bridge is every 6 months, if not sooner per inspections.
@@fullmetalchavez8678 Changed roughly once a year. Used Mostly for pruning. Trying out Treerex for now.
We would like to see more arborist stuff, it's very interesting how they work, its very diferent from rope acces. (also more rope acces stuff would be nice too) thanks for your videos!
Love it, please more arborist stuff
Dude thanks for focusing on our industry! Information like this always helps!!
Love the arborist vids !!
KEEP UP THE ARBORIST STUFF PLEASE!!! WE NEED MORE GEAR CONTENT!!!
Dude! I look suspiciously at my bridge all the time! Thank you!
Can't wait for this series. I'm just getting into the arborist world so this will be interesting
As a tree surgeon it's always been fascinating and an insight in the gear we use on a daily basis in the industry. This will be a great series
Hi, Thanks Ryan, really appreciate you are also breaking arborist stuffs :) I guess we will have interesting projects with Seatle Treecare, maybe Guilty of Treeson ? And I will be more than happy if I could be of any help here in France. I am an a Tree Lover (Arborist and also trainer for Recreational Tree climbing, from a single climb to speedline and all sorts of crazy things up in the canopy). Really appreciate your AMAZING work and looking forward for more unpredictable tests from the Dropping Tower. Say hello to Boby ! Cheers.
Love it, super excited about this series also super excited about the canyoneering series, they're more related than you'd think. Thanks so much for your content!
Thanks man I’m an arborist with that same saddle and I have the replacement bridge in my gear box and my original is glazed pretty bad and almost ready for replacement but after seeing this I’m gonna hold off. Plus I did like you would and I added another 10mm rope bridge to double it up since I have a running saw when I’m climbing. Great episode, looking forward to more arb videos!
Really good start to your arborist series. Looking forward to it. Would have been nice to know how long they used the bridges?
Ive never rock climbed but I’ve been watching your channel for the last year or 2 relating it to my work as a climbing arborist.
Thanks for the very practical content
Great vid. Just found you through the lost arrow video. Wow a whole world of more fun!
Loving the variety of content on this channel, I'm just a novice rock climber but all kinds of rope access work is super interesting to me.
cool!
thanks for your hard work and investment!
Yes! I'm very interested in the tree climbing world. Some techniques have filtered down to hunters using tree stands or saddles so that is also a direction you could explore.
Great Video, thanks for sharing…
Hell yeah dude, keep it up✌️
Yay more arborist stuff!
I have this same saddle. I have 2 but generally used separately rather than both together. Great video as always 👍
Keep this stuff coming!! Lots of cool climbing devices I bet arborists would send you to pull and drop test!
Weaver harnesses used to have technora bridges. They broke. It's not a technora application.
I remember Nick looking for donor bridges for this! I'm glad he did it.
Thank you.🙂
Thanks!
it was about time ;-) super exited i cant wait :-)
Awesome video! thanks bra
I am surprised that the knots did not pull through
You need to make a super good enough sticker for hard hats. Cants say there would be a huge market but pretty sure youd get a lot of love from linemen and arborists.
that's pretty sick!
Nice advice my friend.thankyou.always have a back up in case.do a lot of limited access work and grew up in harness as my grandad was a french Canadian lumberjack.if you climbing I dont think the cancer would be you're main concern.missing the ground is my priority.stay lucky my friend.maddog,west cork.republic of ireland.youve a new subscriber.thankyou
Aborist videos, how cool 😍
Thanks a lot
Love the arborist content... I dont rock climb, but I do tree climb. When you're up there sometimes you get curious about the facts.
Love the arborist content! What I’d really like to see (like you don’t have enough to do :-) ) is how strong various types & diameter branches are! lol
Got my attention lol. Weaver makes the cougar harness with a thick bridge that would be awsome to see broken. Super excited to see what you do at Seattle tree care!
I know from one Arborist falling in a Lake as his Bridge was breaking... But i think it was an other type of Bridge (Flat Webbing) and probably he was a little lazy with his Equipment. This will be an interesting Series for all of us working in trees (for me its just a hobby but there are a lot of professionals)!
More arborist videos!!
Get in contact with Jacob from guilty of treason!!
Ditto!
I agree, a collab video would be awesome! I was just thinking that about 30 seconds before I read your comment, lol.
Better: get in contact with mark bridge from treemagineers!
Go get with east side tree works and break some of those pulleys they use go catch tops
Would love to see if you could help out the saddle hunting community. We have no one to let us know what's truly safe & not. We just do it trial by error. As an example the way we use the grigri & madrock safegaurd. The ropes we use & the way we use 'em. Not what it's intended for but serves us well. Is it safe? Only you & your skills could tell us. Either way, thanks for the channel & all the great content you pump out. Learned a lot along the way & uber grateful. Would love to hear your insight on saddle hunting.
When the sheathing breaks, it is like when the stitches break on a fall arrest lanyard. Some of the force of the fall is absorbed by the work you do when you rip stitches.
I would love to see a video comparing drop tower results to press results for these bridges. Would also be cool to see tests on fall arrest gear too.
Thanks for touching base on this. I’ve been an arborist for ten years… I’d like to touch base with you. I live in brother ca. I have a ton of old/new/used climbing gear I’d like to see tested.
Petzl sequoia srt harness tons of potential to test stuff with that harness for the tree climbing community!!
Fantastic! I wonder what all the different layers are for? Like does the twine serve as a saw stop?
Absolutely love your videos. How do I send you guys a few thing to break test
Would love to see stitched eyes tested of 32 strand static etc. Stitched webbing straps, or loopie and woopie slings. I have confidence in C.M.I stuff for being reliable. Would love to see some C.M.I stuff broken.
We don't use 2, we have a clip to our chest sometimes. sometimes... Thanks for doing this! I always wondered.
I'm a (very amateur) climber. For my lifeline (which where I live, people typicaly use a daisy chain or a chain reactor) I use a Purcell knot with a 6 or 5 mm dynamic cord.
I use it more for convenience, but now I would love to see you break test it
I knew you had an arborist video
It would be cool if you could overlay the graph with the pull so we could see them both at the same time.
Let's go!
I have never broken a bridge nor have I heard anyone else having breaking a bridge either. I run two different saddles with either a two bridge configuration on me Petzl Sequoia which I use as my heavy saddle using it for removals where I will be using a considerable amount of rigging components with the upper bridge Having switched from the original to Teufelberger 18mm and lower using Teufelberger KIII while on my light Removal and pruning saddle I am using a notch with the paw style bridge anchor plates and depending upon what the situation is I rotate from two to three bridge configuration which I used to strictly use each with a ring to allow a smooth fluid movement along the bridge but have recently switched over to using rock exotica swivel eye carabiners for the bridge connect because it makes those hard to get to branch locations that much easier with a swivel or swiveleye carabiner connection. Lastly I would also like to throw in there that there are two different types of climbers regardless if on rock or in tree and the definitive difference between them is that one could care less about their gear and don’t take care of it and those who do that would be more prone to have a saddle go longer than recommended time lengths. Where as I am switching my saddle out each year on my heavy rigging saddle and every other year on my light duty saddle of which I am switching out my bridges on both saddles every six months unless I have put excessive amount of stress and strain on a bridge and saddle and then I will cut it up and toss it just as the same if I drop a carabiner it gets throw away or painted and used for non life support means. You are only able to be a good production climber if you are able to trust your gear fully as calculated risks are part of the job description of being an arborist. Where as if you don’t take care of your gear you have just become a severe liability for your company and if you are the owner it is more a liability than not as you have younger generations watching your life saving equipment get thrown around and treated as though it’s no big deal and while it may never affect you the young climber with two small children at home is the one it could affect. Which I greatly appreciate the work you do on your channel as it has been a direct reason to choose different gear if I think the potential for recreation of the failure is more likely to the way I climb. Specifically talking about paying more attention to and form of side loading carabiners while in th past I was always aware but not to the extent I am now paying much more attention in general with a lot more attention being paid to the side loading of mechanical positioning lanyards such as the Petzl zillon system much like the zig zag , I know it can hold up very well in situations where side loading has taken place while also knowing that is where the failures have occurred in the field
Would love to see an adjustable bridge tested
Extremely happy that you're getting into the whole arborist and rope access business!
Please please please do test choked anchor configurations of carabiners against wood or metal, though.
There is much discussion going on about the safety of this, especially in trees (SRT canopy anchor choked on a branch of smaller or larger size). I guess the general wisdom is that you should do this only at sufficiently large diameters of whatever you're choking, and instead of an aluminum carabiner use in that order a steel carabiner, steel quick link, Notch Quickie or rappel ring. But at which diameter is side-loading actually a problem, does it matter whether it's a tree or a metal pipe and are aluminum crabs actually safe in this configuration? Getting some data on this would be enormously helpful!
Oh, and some people like to choke a DMM Pinto against the branch, this could be another one to test. (Alpine in the working end of the rope, pulley clipped in around the standing part.)
Chocking small diameters is a good idea
HEy Ryan- heading into my rock AND tree worlds….
I for one would love to see negitive rigging forces on spar wood. Not sure how one would do it without jeopardizing an expensive load cell but it would be awesome :)
Can you place test a dmm pinto (rig) choked on a top/tip? Anchorpoint. It's is a great srt anchorpoint. Please let me know if you want more info/photo's. Keep up the great work!
Believe it or not they cut really easy when body weighted with a chainsaw. I cut my climbing rope when I was being swarmed by hornets. That rope is twice the size of my bridge.
Ahh, how comforting to know that my pelvis would snap clean in half like wishbone before my gear fails 🤙🤙
Double redundancy in the bridge itself. The kern as well as the mantle are independently rated and to break in the order of mantle then kern.
i wanna see some break tests of complex rigging to see where the weak points are in systems
The loading would be similar on a tm plate. I actually just replaced my bridge last week.
I have had one break. I always use 2
Would be interesting to see if you had used a rigging plate to make a bit of a gap between the quicklinks. Pronanly wouldn't have made much of a difference but physics might be tricky in that regard.
Seattle arborist here, p cool to see all this. However the chainsaw element far outweighs any gear worries I have when I'm in the tree...
we are waiting for branch breaking bible ;-)
It would be interesting to see what happens to a Petzl Rig when loaded to failure.
I would love to see prusiks catching F2 falls. Always wondered to know if they would hold a whiper. (Regardless for the fact the whiper would kill me anyway)
Ryan, can you break test the petzl evolv adjust? I know is made with thin cord for aid climbing and isn’t rated as fall protection like the connect adjust, but I’d like to see it drop tested. Then maybe replace the cord with 8.7 or 9mm and test again? I really like the idea of having two adjustable cows tails (rope access style) when I’m working at heights.