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12

Pulling down ropes after abseiling in caving is common here in the UK, where a cave has an upper and a lower entrance with one or more pitches in between. We use Static rope and caving descenders are usually designed to only use a single strand of rope. We double the rope and tie a knot with a small loop near the middle of the rope. Then feed one end of the ...


9

First some general dangers not related to melting: Burning your hands braking on the rope (can also happen with semiautomatic descenders like a grigri due to reflex) Uncontrolled impact on the rock Without a backup knot (e.g. prusik) and with a passive descender (e.g. tuber, eight) you may let go of the rope due to the heat induced pain or when impacting ...


9

Was it safe? Yes, you were not in any danger here (unless your tree was a Charlie Brown Christmas tree). Was it the best thing to do? No, for a couple of reasons, the most important being that it does not comply with leave not trace ethics, and can badly scar the tree. It's also no good for your rope, dragging your rope through dirt and sap can ...


9

Leaving a sling behind is not as wasteful as you might think - a sling that has been rappelled off (without a 'biner or ring) must be retired anyway. In the scheme of the cost of recreational activity a few slings and rings add up to a minimal cost. Within reason, waste is not a reason to avoid leaving gear behind. There's a couple of things you can do to ...


8

I believe the "commando rappel" was invented by the military (special forces) though I can find no history of this. My understanding of the idea is that it allows you to rappel fast, gives you a free hand (to hold a weapon, handgun, etc) and allows you to see where you're going. So it's basically designed for rappelling into military situations. Unless ...


8

Yes, it does get left behind. Descending ring are meant to be used to facilitate the recovery of ropes, they save your rope from getting horribly dirty, damaged, or stuck, and leave much less of an impact than rappelling off of a tree or branch. Pulling you rope off of a tree will saw into the trunk and leave permanent scars, it could even possibly lead ...


8

To answer your first question, it doesn't matter very much whether you put the prussik on the same strand as your dcd or on the free strand. One reason it might be considered safer is that putting the prussik on the other strand would allow the other rope to prussik to catch you if the line you were repelling on somehow failed. As this event is extremely ...


6

I'd probably use the same technique I'd use if I was tandem abseilling with anyone, i.e. extend the abseil and attach both parties to it: | | @<- belay plate / \\ / \\ <- rope to adult child--adult ^ | / | <- tail of rope / attach child to adult as well as rope for safety So you extend the belay away ...


4

I love these situations "It tried it once, and it worked, must be safe"...... I am so glad aviation and car industry don't work that way. The answer has to be No, its not safe with ropes of different dimensions. Its also not safe with ropes of the same dimension. Which is less safe - I don't know and I don't care and neither should you. There is one place ...


4

An Aussie rappel is useful for when you need to see and work going forward. It's particularly useful on steep slopes, not just down vertical or extreme slopes you are going to run down. You may need to clear brush down a steep slope, working in front of you as you go, something you obviously can't do if you aren't forward facing and able to stand safely. ...


4

You do not say what size tree, but to me big means something like 1/2 meter or more diameter trunk. Presuming a living tree with no obvious movement of the roots the tree was infinitely stronger than your quick draw or chains or bolts holding them to the rocks. "Was it safe" is not the right question "was it safer than what I already accepted as safe enough" ...


3

Short answer: If the tree is a living and thick one, then it was OK. That being said, there are several reasons you should had done a proper anchor with multiple points (trees, in this case) and equalized, and then walked back again to the top. One simple drawback of your approach is, that the friction between the rope and the tree trunk, when you recall ...


2

I Used the south african method today to descend a twenty foot cliff. It was my first time ever rappelling and I was not with anyone experienced. I know, not the best idea. I had practiced this method down steep hills a few times and watched several detailed youtube videos on the method. That being said. It was one of the most exhilarating moments of my ...


2

I think you invented a new knot, or at least one that is decently documented (my non-trivial search came up empty). Regardless, the bigger question (as others pointed out in the comments) is how it handles in various tests, and whether it fares better, worse, or on par with the flat overhand bend. Even if it was previously named, it may not have been tested ...


1

This is basically a supplemental to imsodin's answer. In Marine Corps boot camp about 15 years ago I remember one of the instructors demonstrated in dramatic fashion how safe rappelling on the tower was due to the presence of a belayer below. The instructor took a flying leap off the tower and the belayer was able to stop his fall. Given that free fall is ...


1

Regarding the hauling question, I suggest keeping the descender and prusik on the same strand. Here's my reasoning: It keeps the second strand free in case you need to rap down to the person to administer first aid or other assistance. It allows you to use the second strand for hauling, in case you don't have a second rope around for that purpose. It ...



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