How Strong are Arborist Bridges - New vs Old

Hello my arborist friends. This is a rope bridge and if you're not an arborist that is literally their belay loop so they can rotate side to side and we're gonna find out how strong. I got two brand new ones and I have some old ones that people sent me and we're gonna break test and see if there's a difference. Hi I'm Ryan Jinks and welcome to my lab where we like to break test all sorts of things. Some ways you're supposed to use them some ways you're not but today we're just going to test this. I think the best way to do this is going to take these quick links and because they have stopper knots if you're not an arborist there's a stopper knot that goes into these little tiny side rigging plates. Now Nick Markley sent me a used one and let's see here Hunter Vincent also sent me a used one so we're gonna find out if they're gonna break lower. I don't know if you put in the comments below if arborists have ever had these things break. I think some of them have two for redundancy that's something I would want to do when I go play on some trees. I'm gonna try to do some more arborist videos for you guys since you guys have been requesting it but they look mostly dirty and sappy and gross but we'll find out if they break lower. Warning you could get cancer from this product as if that's the worst thing you're worried about when you're hanging in a tree. All right we're gonna start with the new ones. Okay I put both quick links in one carabiner and then it goes around that way. I know it's not exactly how it is on a harness but it's better than nothing. So it didn't pull through but that is I think either the cause or just where it's going to break. Around this bend up here I don't think it's going to to break up here like that's a like doubly strong right. So that's the core inside of these things and I'm told it's Dyneema but I'm not convinced. So it looks like we got 25.59 and it did uh kind of a little wonky thing there at the end. So this is the machine we're using. We basically have a hydraulic back there and I use these soft shackles because then when things go flying it's softer and then I have like a chain that I can connect the length I want. And then we got these two load cells that both look like this one here one there and that's what gives us these awesome graphs and I've got uh redundancy for information. As far as this goes I find a little bit smaller of a quick link that way it doesn't um either damage it as much or as quickly or it's definitely not going to slip through. I don't have anything smaller or anything like a rigging plate that's going to have a hole that's the right size. So super good enough. I bet you that's how it would go on a harness but I just I'm telling you if you got 20 kilonewtons on your uh body you got bigger problems. Oh look it's crunched. That's weird how it goes up and then down and then and then I don't know why it goes back up. It's the sheath Oh the sheath did it. And then the other side. That is really yellow. That is. I wonder if that's from dirt or if it's age. Check that out that's where it was touching the carabiner. Well that's a pretty similar result. That's full strength-ish. It does look like a secondary sheath because this is separate I believe Dyneema. The other one had it too. Oh this look how white that is. Interesting how that changes. All right let's break next. I think it's always going to break here regardless of what kind of connections we have. It's the pinch of this I think more than it is like a pinch in here. But this is less yellow than the other used one. Most arborists are going to be like this not used at all. I'd use that forever. Oh look this is what happens when you don't open or lock your carabiners. A different result. Wow that makes this video way more interesting. Well okay so all the other grass went up and then so what Nick said he did was to try to like make it more used is he ran it back and forth on a I think an aluminum ring which is why it has that dirty look to it as opposed to that side. Aluminum impregnation makes it stronger. I don't know Bobby might be a myth. Yeah that did not have much life left in it. Neither does this one. So I know this was kind of a simple episode and I may not even pulled these correctly for you but I do want to make more arborist videos. I am going to go work with some arborists in Seattle area and we're going to do some cool experiments. But I thought this was going to be a good start to the our arborist series. So let me know what you think about this how you want to see tests done in the future and what else you want to see broken. Thanks for watching.