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the_alpine
Feb 10, 2004, 6:44 AM
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When walking a highline, MAKE ABSOLUTELY CERTAIN the slackline end of your tether uses smoooooth 'biners. By smooth I mean check the interior of the biner (namely the top of the gate/hood) and make sure there are no sharp edges. My friend was using an autolocking Omega Jake, fell, and split the line. The tubular webbing was fileted lengthwise and turned into flat webbing.
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the_alpine
Feb 10, 2004, 6:56 AM
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Exactly. The line did not break. The rough inside edge of the 'biner ripped open the webbing. Lots of fraying and a no-longer tubular line, but still held the fall. Didnt try anymore falls after that though.
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overlord
Feb 10, 2004, 11:15 AM
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:shock: :shock: :shock:
its quite easy to imagine of you take into account the force needed to keep the line taunt.
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rrrADAM
Feb 10, 2004, 1:53 PM
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Highlines are supposed to be made from 3 seperate lines taped together for tripple redundancey... If this was not being done, then your friend is luck he did not fall victim to "darwinism".
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stuck
Feb 10, 2004, 2:38 PM
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What would you advise as the best option?
I remember ammon saying a while back that threading severl rap rings over the line for your attachment was the best option.
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nicklikesfire
Feb 10, 2004, 3:02 PM
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In reply to: Highlines are supposed to be made from 3 seperate lines taped together for tripple redundancey... If this was not being done, then your friend is luck he did not fall victim to "darwinism".
how exactly, do you do this? just get 3 seperate peices of webbing, and tape them together, one on top of the other? do they have seperate anchors as well?
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the_alpine
Feb 10, 2004, 3:30 PM
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The line was 1 inch threaded with 11/16 inside. Everything was redundant. Just thought I would post what happened.
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japhyr
Feb 10, 2004, 8:56 PM
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I'm glad your friend was all right. That's a scary day.
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madturtle
Feb 10, 2004, 9:44 PM
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In reply to: In reply to: Highlines are supposed to be made from 3 seperate lines taped together for tripple redundancey... If this was not being done, then your friend is luck he did not fall victim to "darwinism". how exactly, do you do this? just get 3 seperate peices of webbing, and tape them together, one on top of the other? do they have seperate anchors as well?
The way I understand it yes you use seperate anchors for each piece of webbing. the top strand is the one you actually walk on and is fully tightened, the two below it are progessively looser so that if the one above it goes the the other two are not already stretched to their max. Unlike regular climbing gear that has a huge safety factor slacklines are basically pushing the gear to it's actual limits far beyond what it is really designed for.
I'm not trying to knock your buddy or anything but I don't think that threading a 2nd piece of webbing inside a larger piece will create a looser, redundant saftey line.
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coldclimb
Feb 11, 2004, 1:48 AM
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I saw a thing online somewhere where the line had a piece of 1 inch with another smaller line thread through, and then another line taped to the bottom of that. Seems safe.
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batguano
Feb 16, 2004, 4:17 PM
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that's a crazy story for sure alpine. i wonder if it was the notch in the gate or the locking mechanism that caught the line. so it split the entire length? pure speculation here: i wonder if the threaded line precipitated/added to the split factor? when web gets pulled tight, the edges get pretty sharp. seems like if the biner started a small hole, the thinner line could bust/cut it's way through. just a thought.
somewhere along the way i found this great aluminum rap ring. it is of a rolled construction like the normal rap rings, but this one is like 1/2" stock, with a 1.5" center hole. it has much beef. i've also got a new figure 8 descender that i plan on using for this. seems like it would be fine. it's beefy, it's smooth, there's no gate to cross-load and it's got seperate holes for the leash and the lines.
(there could be an element of cross-loading the grain structure in a machined 8. should still be pretty strong though. if any of them are cast then it wouldn't be an issue. i'll do a little more research here and see what i can find.)
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stuck
Feb 17, 2004, 4:51 AM
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http://www.barry.ca/...ccessories/Rings.htm
Batguano, check out that website. It has steel rigging rings that might be useful for highlining. Plus, that website has tons of other cool circus stuff. Check it out.
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dirko
Feb 17, 2004, 6:26 AM
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Thanks for the tip, Alpine.
As for the rest of it, anchors, backups, and such, I really think that highlines need to be learned in person. I'm torn, because the net is a great forum for people to compare different line setups they are using among other things. However, during my travels in the past year I have talked to alot of people who planned to setup highlines that I couldn't call safe.
Please be smart, people.
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