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rapping on a toprope anchor
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uso5590


Oct 19, 2007, 1:57 AM
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rapping on a toprope anchor
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I am interested in climbing a few toprope routes that are only accessible from the top. My question is... if the top rope anchor is hanging over the edge of the cliff, how do i weight the achor while rappelling without free falling the first few feet?


coastal_climber


Oct 19, 2007, 2:01 AM
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Re: [uso5590] rapping on a toprope anchor [In reply to]
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You have a backup to bolts or a tree back form the clif edge, while you set up the anchor. You set up your toprope anchor, feed the rope through and toss it down. There's really no need to rappel. And would it be possible for you to explain it better?

>Cam


uso5590


Oct 19, 2007, 2:09 AM
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Re: [coastal_climber] rapping on a toprope anchor [In reply to]
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to explain better... the only way to the bottom of the cliff is from the top. To rappell down. I only have one rope, so i have to use my toprope anchor to reach the bottom, and the anchor point is 1 foot below the lip on the top of the cliff. Seems as though i would have nothing supporting me until i was below the power point.


coastal_climber


Oct 19, 2007, 2:21 AM
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Re: [uso5590] rapping on a toprope anchor [In reply to]
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So there is no way of getting to the bottom? If not, you will have to set your anchor, feed the rope through, set up for rappel, with prusik. Then get lowered from above down until you are on rappel.

>Cam


uso5590


Oct 19, 2007, 2:23 AM
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Re: [coastal_climber] rapping on a toprope anchor [In reply to]
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Well thats clear as mud! anyone willing to provide a bit more detail? Thanks!


coastal_climber


Oct 19, 2007, 2:27 AM
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Re: [uso5590] rapping on a toprope anchor [In reply to]
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Do you know how to build an anchor? You either need to get an experienced partner, or take some courses.

>Cam


(This post was edited by coastal_climber on Oct 19, 2007, 2:31 AM)


coastal_climber


Oct 19, 2007, 2:38 AM
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Re: [coastal_climber] rapping on a toprope anchor [In reply to]
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Take a look at this website. http://www.ryanojerio.20m.com/...hor%20Principles.htm

You build and attach yourself to the belay anchor, then you are lowered down to it, then you are taken off belay, then you rappel down. If you can't figure this out, how are you getting your belayer down as well?

>Cam


(This post was edited by coastal_climber on Oct 19, 2007, 2:43 AM)


carabiner96


Oct 19, 2007, 3:57 AM
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Re: [uso5590] rapping on a toprope anchor [In reply to]
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uso5590 wrote:
Well thats clear as mud! anyone willing to provide a bit more detail? Thanks!

You first. Cam's answer was pretty much it; pre rig your rappell and prussic down to the master point. Are you belaying from above since you can't get down to the bottom?


blueeyedclimber


Oct 19, 2007, 1:32 PM
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Re: [carabiner96] rapping on a toprope anchor [In reply to]
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There are a bunch of ways to do this, but if you are asking and not being able to figure it out, then chances are you won't understand any answer given to you without pictures. Probably the only one you will understand is this: 1. Set up toprope anchor
2. Pull up rope and put yourself on rappel (use a rappel backup, if you don't know what that is, then go buy a book and learn)
3. Batman down your anchor until it is possible to weight the rappel.

From your post, it seems that you would rather not do this, because it is a little nerve-racking. I have a couple questions. What are you using for the anchor, static line or webbing? How long is your rope and how high is the cliff?

Also, there are a few safety concerns that may come up with a cliff such as this. What if you or your friend can't make it up? Do you know how to ascend a rope? Is it a sea-cliff? If so, what is the tide situation at the bottom? It is also sometimes preferable to belay from the top, which requires the anchor to be set up differently.

Be safe, Josh


desertwanderer81


Oct 19, 2007, 3:46 PM
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Re: [uso5590] rapping on a toprope anchor [In reply to]
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What *I* do, is

1) set-up my anchor.
2) pick up my rope so that I can clip in for the repell.
3) clip myself directly into my anchor with a runner or daisy chain.
4) downclimb without holding the rope
5) weight my repell and then unclip my safety.
6) repell!


binrat


Oct 19, 2007, 3:58 PM
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Re: [desertwanderer81] rapping on a toprope anchor [In reply to]
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Basically the same as desertwanderer81 except
3)clip myself directly into my anchor with a purcell prussik.

Binrat


desertwanderer81


Oct 19, 2007, 4:13 PM
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Re: [binrat] rapping on a toprope anchor [In reply to]
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Yup, it's basically all same result either way. I suppose you could just put a prussik on your rope too.

If you know how to get a weighted prussik off though....


reg


Oct 19, 2007, 4:18 PM
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Re: [desertwanderer81] rapping on a toprope anchor [In reply to]
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desertwanderer81 wrote:
What *I* do, is

1) set-up my anchor.
2) pick up my rope so that I can clip in for the repell.
3) clip myself directly into my anchor with a runner or daisy chain.
4) downclimb without holding the rope
5) weight my repell and then unclip my safety.
6) repell!

i don't like the static connection to the anchor while downclimbing. if you slipped and dropped a couple feet you could really hurt yourself or break something - back, harness, sling, etc
i put myself on repel with prussic backup then downclimb to the power point.


coastal_climber


Oct 19, 2007, 4:40 PM
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Re: [desertwanderer81] rapping on a toprope anchor [In reply to]
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desertwanderer81 wrote:
What *I* do, is

1) set-up my anchor.
2) pick up my rope so that I can clip in for the repell.
3) clip myself directly into my anchor with a runner or daisy chain.
4) downclimb without holding the rope
5) weight my repell and then unclip my safety.
6) repell!

No prusik?

>Cam


Carnage


Oct 19, 2007, 4:41 PM
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Re: [uso5590] rapping on a toprope anchor [In reply to]
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i pull a bunch of rope through my rappel device, then take a jump. its kinda like bungee jumping. sometimes my huge balls swing into the rock though, kinda hurts a bit.

good thing about this technique is that you end up about half way down the cliff, so less time actually rappelling.

(side note: dont actually do this)


desertwanderer81


Oct 19, 2007, 4:42 PM
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Re: [reg] rapping on a toprope anchor [In reply to]
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IMO you're overestimating the forces involved with a static setup falling 2 feet, but to each their own.

I can't recall anyone ever getting injured by setting up with a daisy chain.


Carnage


Oct 19, 2007, 5:02 PM
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Re: [desertwanderer81] rapping on a toprope anchor [In reply to]
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desertwanderer81 wrote:
IMO you're overestimating the forces involved with a static setup falling 2 feet, but to each their own.

I can't recall anyone ever getting injured by setting up with a daisy chain.

quick little trip to the petzl fall simulator shows that a 75kg climber jumping onto a static rope from 2 feet up generates 17kn+ of force.

2 things that are unnerving about this.

1. Injury to climber: hope you have a really strong back to support that kind of jerking from your harness

2. Fall factor: think about this, you are doing a fall factor 2 onto a mostly static system. the only dynamic part of the system is the few inches of your climbing rope. so if your looking to ruin a rope (everything ive always read says retire your rope if you experience a NEAR FF2 fall), then go ahead, take that leap. if you want to get the FF down, do what i said above, itll get the FF closer (but not less than) 1.


edit: on second thought, if you were to pull a bunch of rope through and jump, the FF could get lower than one. since you have the rope doubled, it seems like you would have twice as much rope out as i was previously thinking. This however, would not greatly affect the logic behind either clipping directly into the anchor, or if you had a small(small = couple inches) amount of rope connecting you to your belay device. when a small amount of rope is through the device, since the static stuff in the anchor, your still experiencing a FF of close to 2


(This post was edited by Carnage on Oct 19, 2007, 5:06 PM)


james481


Oct 19, 2007, 5:07 PM
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Re: [desertwanderer81] rapping on a toprope anchor [In reply to]
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desertwanderer81 wrote:
IMO you're overestimating the forces involved with a static setup falling 2 feet, but to each their own.

I can't recall anyone ever getting injured by setting up with a daisy chain.

Wasn't there an incident two or three months ago where a climber fell above an anchor he was attached to with a spectra sling and pulled the anchor, resulting in his death? IIRC, it was either on Mont Blanc or the Grand Jorasses. From what I read, he had climbed about two feet above his anchor on a static sling. He slipped, fell four feet onto the anchor, which then ripped from the impact force, sending him to his death below?

Regardless, when anchoring directly to anchors with no dynamic rope in the system, if I'm in a situation where there is any chance of falling on the anchor, I would use a Purcell tied in 7 or 8 mm perlon. The perlon stretches a bit to absorb force, and if you really generate a huge amount of force, the prussic will slip to help dissipate it.


justroberto


Oct 19, 2007, 5:09 PM
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Re: [reg] rapping on a toprope anchor [In reply to]
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If you're really worried about downclimbing, do this:
1)set up your tr anchor
2)rapell off a tree (or rock/second anchor back from the cliff face) to your TR anchor.
3)tie into the anchor
4)have your partner rap all the way down, if possible
5)pull the rope and thread it through your TR anchor. be sure to tie the rope to yourself somehow before pulling it so that you don't drop it entirely during the transition.
6)rap
7)pat yourself on the back. you're now practically a multipitch sport rapeller. awesome.


reg


Oct 19, 2007, 5:13 PM
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Re: [Carnage] rapping on a toprope anchor [In reply to]
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well - stop doing that.


desertwanderer81


Oct 19, 2007, 5:13 PM
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Re: [Carnage] rapping on a toprope anchor [In reply to]
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Interesting food for thought, however I think there is a LITTLE stretch in the system.

Afterall, aren't you clipped in when you are doing a setup? What's the point in clipping in if there is no added safety?


jgloporto


Oct 19, 2007, 5:49 PM
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justroberto wrote:
If you're really worried about downclimbing, do this:
1)set up your tr anchor
2)rapell off a tree (or rock/second anchor back from the cliff face) to your TR anchor.
3)tie into the anchor
4)have your partner rap all the way down, if possible
5)pull the rope and thread it through your TR anchor. be sure to tie the rope to yourself somehow before pulling it so that you don't drop it entirely during the transition.
6)rap
7)pat yourself on the back. you're now practically a multipitch sport rapeller. awesome.

That was my thought...


shimanilami


Oct 19, 2007, 6:50 PM
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Re: [desertwanderer81] rapping on a toprope anchor [In reply to]
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desertwanderer81 wrote:
IMO you're overestimating the forces involved with a static setup falling 2 feet, but to each their own.

I can't recall anyone ever getting injured by setting up with a daisy chain.

I once fell on my daisy while moving onto a new aid placement. Trust me, it freakin' hurt. I wasn't injured, necessarily, but I chipped a tooth and it really shook me up.

I'd recommend that you try to avoid falling on a static line from any distance.


binrat


Oct 19, 2007, 7:13 PM
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Re: [shimanilami] rapping on a toprope anchor [In reply to]
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shimanilami wrote:
desertwanderer81 wrote:
IMO you're overestimating the forces involved with a static setup falling 2 feet, but to each their own.

I can't recall anyone ever getting injured by setting up with a daisy chain.

I once fell on my daisy while moving onto a new aid placement. Trust me, it freakin' hurt. I wasn't injured, necessarily, but I chipped a tooth and it really shook me up.

I'd recommend that you try to avoid falling on a static line from any distance.

This is why I like the purcell,it will take most of the shock load before my old body does. I always rap with a prussik back-up.

binrat


reg


Oct 19, 2007, 7:26 PM
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Re: [desertwanderer81] rapping on a toprope anchor [In reply to]
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desertwanderer81 wrote:
IMO you're overestimating the forces involved with a static setup falling 2 feet, but to each their own.

I can't recall anyone ever getting injured by setting up with a daisy chain.

"Do not use static ropes for climbing. Static ropes stretch very little at all (0.5 to 1.5 percent or less). Forces generated in a climbing system can quickly exceed factor 2 if a static rope is used, causing grave (deadly) injuries to the climber and generating forces in the system which exceed the strength of the gear used. (a fall of as little as 4 feet on a static rope can create enough shock load to cause injury, death, or failure of climbing gear). " from flatliners.
of course - static rope has a little give, but your sling does not - so a shorter fall will do equal damage.


(This post was edited by reg on Oct 19, 2007, 7:29 PM)


desertwanderer81


Oct 19, 2007, 8:02 PM
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Re: [reg] rapping on a toprope anchor [In reply to]
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reg wrote:
desertwanderer81 wrote:
IMO you're overestimating the forces involved with a static setup falling 2 feet, but to each their own.

I can't recall anyone ever getting injured by setting up with a daisy chain.

"Do not use static ropes for climbing. Static ropes stretch very little at all (0.5 to 1.5 percent or less). Forces generated in a climbing system can quickly exceed factor 2 if a static rope is used, causing grave (deadly) injuries to the climber and generating forces in the system which exceed the strength of the gear used. (a fall of as little as 4 feet on a static rope can create enough shock load to cause injury, death, or failure of climbing gear). " from flatliners.
of course - static rope has a little give, but your sling does not - so a shorter fall will do equal damage.

I don't personally do it myself as I don't even own a static rope nor would I even chance it if I did, but I have been told that it is possible to TR on a static rope.

*shrug* doesn't seam worth it to me but I dunno.

And to the other poster, do you still use a daisy chain for a backup or do you use a different system now?


microbarn


Oct 19, 2007, 9:18 PM
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desertwanderer81 wrote:
reg wrote:
desertwanderer81 wrote:
IMO you're overestimating the forces involved with a static setup falling 2 feet, but to each their own.

I can't recall anyone ever getting injured by setting up with a daisy chain.

"Do not use static ropes for climbing. Static ropes stretch very little at all (0.5 to 1.5 percent or less). Forces generated in a climbing system can quickly exceed factor 2 if a static rope is used, causing grave (deadly) injuries to the climber and generating forces in the system which exceed the strength of the gear used. (a fall of as little as 4 feet on a static rope can create enough shock load to cause injury, death, or failure of climbing gear). " from flatliners.
of course - static rope has a little give, but your sling does not - so a shorter fall will do equal damage.

I don't personally do it myself as I don't even own a static rope nor would I even chance it if I did, but I have been told that it is possible to TR on a static rope.

*shrug* doesn't seam worth it to me but I dunno.

And to the other poster, do you still use a daisy chain for a backup or do you use a different system now?

Yea, reg took the quote out of context and also didn't even quote the complete paragraph. His reference itself also says a static rope is fine on a top rope setup.

Here is his link fixed so that it loads (maybe)
http://www.southeastclimbing.com/faq/faq_fall_factor.htm

This topic has already been hashed out enough. There are some advantages and disadvantages:
http://www.rockclimbing.com/...post=1669065#1669065


desertwanderer81


Oct 19, 2007, 9:27 PM
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Re: [Carnage] rapping on a toprope anchor [In reply to]
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Carnage wrote:
i pull a bunch of rope through my rappel device, then take a jump. its kinda like bungee jumping. sometimes my huge balls swing into the rock though, kinda hurts a bit.

good thing about this technique is that you end up about half way down the cliff, so less time actually rappelling.

(side note: dont actually do this)

I've actually seen someone do this (a friend of mine, but not a climbing partner). Set up for an ausi repell, gathered up the rope, took a running start, and leaped. He got lucky and only busted up his leg and not his entire body.

He did it on his rope and I would like to point out that I have never nor will ever use him as a climbing partner nor use any of his gear for climbing.


sweetchuck


Oct 19, 2007, 10:25 PM
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rapping on a toprope anchor [In reply to]
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Sometimes it is not easy to downclimb. I often have my pack on and boots and all that. This is how I do it: I attach an aider to one leg (the one that is most centered) with a prussic, attached above, but close to the edge (great album by the way). Then I rig myself up for rappel and attach my autoblock backup nice and tight, then I can just go down the ladder (aider) to the anchor and rappel from there (leaving the aider on top). My hands are free to hold on and I don't have to batman. I certainly have swung and batmanned and downclimbed and all that before I came up with this system.
It cannot be emphasized enough that if you are going to climb somewhere like you are mentioning, you and your partner need to know how to ascend the rope to get out, and not just 'I read about it on rc.com' or 'I tried it once from my deck'. You should have ascending down. Good luck!
sc


desertwanderer81


Oct 19, 2007, 10:31 PM
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Re: [sweetchuck] rapping on a toprope anchor [In reply to]
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with a long prussik that you can step up on, you should be able to climb almost anything. I always cary a cordellette on me to double for this stuff.

A nice piece of cordellette has so many uses i don't know how people can climb without one!


jt512


Oct 20, 2007, 1:37 AM
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There was enough ambiguity in the OP that I had planned to stay out of this thread, but other posters have brought up points I'd like to comment on. First of all, aside from the fact that a prussic is a piece of gear I just might not have with me while on a top roping mission, am I the only person who isn't so sure that a prussic would hold in response to a dynamic load? Perhaps a knot in the ropes below the rappel device would be more sound. Secondly, a two foot fall onto a static anchor could be fatal, either because it breaks the anchor and you break when you hit the ground, or it breaks you directly. Although not clear from the OP, let's assume that the the TR anchor being over the edge means that that the anchor points are actually on the ledge and the anchor is extended over the edge to reduce wear on the rope (as opposed to the route being a sport climb with bolted anchors over the edge). Then, the OP need only extend the anchor over the edge slightly, so that a 2-foot fall onto the anchor while downclimbing would not be possible. Usually you can clip in short to the anchor while downclimbing, sometimes changing the clip in point while downclimbing, so that a static fall, should it occur, would be only a few inches. In addition, you often ease yourself over the edge, so that if you were to fall you'd slide over the edge, and the friction would reduce the severity of the fall. Finally, sometimes the thing you tie in with is the easiest thing to grab onto while downclimbing -- easier to grab onto than the anchor itself. These things argue in favor of tying-in direct to the anchor while downclimbing, in my opinion.

Jay


diebetes


Oct 20, 2007, 2:58 AM
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Re: [desertwanderer81] rapping on a toprope anchor [In reply to]
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desertwanderer81 wrote:
Interesting food for thought, however I think there is a LITTLE stretch in the system.

Afterall, aren't you clipped in when you are doing a setup? What's the point in clipping in if there is no added safety?

Well, when you clip in you're usually BELOW the anchor. Thus, you're hanging, and if you're hanging you can't fall. If you do fall it means the anchor failed and the daisy chain doesn't matter at that point.
This goes back to a thread that was on here a while ago about how we all attach ourselves to our anchors. The verdict (or maybe I just think this because this is how I do it) was that the best way to connect to an anchor was with the climbing rope, due to the dynamic (albeit minor) properties. I don't even own a daisy chain, for many reasons, and the only reason I would own one is for aid climbing.


extreme_actuary


Oct 20, 2007, 3:40 AM
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In reply to:
hope you have a really strong back to support that kind of jerking
Not a problem.


stymingersfink


Oct 20, 2007, 5:12 AM
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Re: [desertwanderer81] rapping on a toprope anchor [In reply to]
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desertwanderer81 wrote:
IMO you're overestimating the forces involved with a static setup falling 2 feet, but to each their own.
IMO?.... In My OPINION?!!!


In My EXPERIENCE, even a two foot daisy fall (<FF1) onto the anchor is something I'd rather not ever repeat. PERIOD. Let alone a 2' FF2.
In reply to:
I can't recall anyone ever getting injured by setting up with a daisy chain.
Just because you've never heard of it, or can't recall that it happens, doesn't mean the possibility and probability of it happening does not exist.

Why would you risk something when you've got no idea what the odds of failure are? Casinos in Nevada rely and thrive on people like you. If you don't know the odds, don't play the game. Especially when the cost could be the rest of your life.


dtew


Oct 21, 2007, 8:33 AM
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Re: [stymingersfink] rapping on a toprope anchor [In reply to]
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I ran into the same issue today at a local crag in the course of setting up a TR anchor then rappelling down to rejoin my partner.

So the bolted hangers were on the flat and totally easy to access and set-up an equalized anchor. The problem is, off the edge is about 3 feet-or-so of less-than-vertical abrasive rock, which THEN drops to vertical. If you set up a short anchor that doesn't clear the second edge, the rope rubs on the abrasive rock. But setting up a long anchor to clear the lower edge puts the rope way too low to just connect the rappel device and back over the edge. In addition, I've always been taught to check your anchor system by weighting it through the rope first (while you are connected to another backup, of course).

So I figured the best thing to do in that circumstance was to clip a daisy to a chain link on the bolted hanger (I'd use a completely unrelated anchor if that was possible, but it wasn't so in this case), but then shortening the daisy with another 'biner. The idea was that although the entire daisy loop is good for 16KN, the bar tacks on the daisy are good for 2kN, so in this case serving as load limiters (a la Screamer) should a slip-up occur.

Does this sound about right? Does anyone see any obvious flaws with this method of dealing with this situation?


desertwanderer81


Oct 21, 2007, 10:20 AM
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stymingersfink wrote:
desertwanderer81 wrote:
IMO you're overestimating the forces involved with a static setup falling 2 feet, but to each their own.
IMO?.... In My OPINION?!!!


In My EXPERIENCE, even a two foot daisy fall (<FF1) onto the anchor is something I'd rather not ever repeat. PERIOD. Let alone a 2' FF2.
In reply to:
I can't recall anyone ever getting injured by setting up with a daisy chain.
Just because you've never heard of it, or can't recall that it happens, doesn't mean the possibility and probability of it happening does not exist.

Why would you risk something when you've got no idea what the odds of failure are? Casinos in Nevada rely and thrive on people like you. If you don't know the odds, don't play the game. Especially when the cost could be the rest of your life.

with a daisy chain you're lowering yourself off of the edge with it. So the chances of falling directly on the anchor are very very slim. That and you already have your rope through your belay device which will absorb some of the fall (with the give in your repelling system). That all coupled together with the fact that the anchor is there as a safety in the unlikely event that you should slip and somehow not be able to break yourself make it a pretty safe bet.

The vast majority of people I know and have randomly met use daisy chains.


carabiner96


Oct 21, 2007, 2:04 PM
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Re: [desertwanderer81] rapping on a toprope anchor [In reply to]
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A very wise man finally broke me on my use of daisy chains.

regarding rapping off: set up anchor. Prussik into one of the arms of the anchor. Pull master point back up to me (the ropes already in it and been thrown) and set up my rapp device - while I'm still on flat solid ground. Place my back up rappell prussic. Now I'm attatched to the arm of the anchor (tree, bolt) AND to the climbing rope. I've got two prussicsw in case one fails. Now, using the prussic on the arm, I lower myself down, bringing the MP with me. Once everything is in place, I unclip from my top prussic and BAM! ready to rappell.


jt512


Oct 21, 2007, 4:46 PM
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carabiner96 wrote:
Prussik into one of the arms of the anchor.

You're putting a prussic on something other than a rope? How thoroughly have you tested this rig? Will a prussic on a cordellete or a spectra sling reliably hold? I wouldn't expect it to. It is certainly not a standard use of a prussic.

I agree that using a daisy to lower yourself over the edge is potentially dangerous. Daisies are designed to hold body weight only, and can fail in a static fall. A Metolius PAS might be handy to have if you find yourself doing this often.

Jay


mjdoutdoors


Oct 21, 2007, 5:26 PM
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  I climb at Fremont Canyon in Wyo where most of the time one has to rappel into the void. Many times it is best to set the power point back from the edge and have the belayer stay at the top to belay. A very safe method is to throw a a line down for rappeling and have a belay line off a GriGri for the climber as he or she rappels(this means two ropes). The belayer Opens the GriGri as the climber descends off the rap line and when the climber reaches the bottom he or she simply yells "take" and the climber is on belay, ready to get off rappel and climb. One note of caution, it is best to have the GriGri/powerpoint "in space" so the cam on the GriGri has room to move, if not the GriGri's cam can dive into the dirt or rock and not cam on the rope. The GriGri/powerpoint can be flat on the ground but make sure the cam side is up so it can move, as well as putting a rug or something else underneath to keep it out of the dirt. This is a very safe system as the climber is backed up by the belay line as he or she descends.


carabiner96


Oct 23, 2007, 4:23 AM
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jt512 wrote:
carabiner96 wrote:
Prussik into one of the arms of the anchor.

You're putting a prussic on something other than a rope? How thoroughly have you tested this rig? Will a prussic on a cordellete or a spectra sling reliably hold? I wouldn't expect it to. It is certainly not a standard use of a prussic.

I agree that using a daisy to lower yourself over the edge is potentially dangerous. Daisies are designed to hold body weight only, and can fail in a static fall. A Metolius PAS might be handy to have if you find yourself doing this often.

Jay

Im not sure i understand your question. We're talking Tr anchors here, which in my head, in a simple sense means two big trees. An "arm" of this lanchor would be a length of static, appx 10-11 mm. I wouldn't reccomend prussicing onto a cordalette or sling....

That said, standard 6-7 mm prussiks work fine, as does a single length webbing runner tied as a kleimheirt. i did find that spectra runners slipped a lot mroe before catching, making things a bit jerky.


jt512


Oct 23, 2007, 4:56 AM
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carabiner96 wrote:
jt512 wrote:
carabiner96 wrote:
Prussik into one of the arms of the anchor.

You're putting a prussic on something other than a rope? How thoroughly have you tested this rig? Will a prussic on a cordellete or a spectra sling reliably hold? I wouldn't expect it to. It is certainly not a standard use of a prussic.

I agree that using a daisy to lower yourself over the edge is potentially dangerous. Daisies are designed to hold body weight only, and can fail in a static fall. A Metolius PAS might be handy to have if you find yourself doing this often.

Jay

Im not sure i understand your question. We're talking Tr anchors here, which in my head, in a simple sense means two big trees. An "arm" of this lanchor would be a length of static, appx 10-11 mm. I wouldn't reccomend prussicing onto a cordalette or sling....

That said, standard 6-7 mm prussiks work fine, as does a single length webbing runner tied as a kleimheirt. i did find that spectra runners slipped a lot mroe before catching, making things a bit jerky.

OK, so you're putting the prussic on an arm of an anchor comprised of static rope. Most TR anchors aren't made from rope, so your prussic solution isn't a general one; but if your TR anchor is made from static rope, I think you've found a very good solution to the problem of lowering yourself down to the master point of the TR anchor safely.

Jay


carabiner96


Oct 23, 2007, 5:09 AM
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Yeah most of the toproping I do is in an institutional setting, where we get to use big freaking technical static rope. That said, when TR on my own time in the "two big trees" situation - which there are a lot of around here- if find that static works real nice. Would you use webbing? Maybe I would, if i weren't so used to static.


jt512


Oct 23, 2007, 5:20 AM
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carabiner96 wrote:
Yeah most of the toproping I do is in an institutional setting, where we get to use big freaking technical static rope. That said, when TR on my own time in the "two big trees" situation - which there are a lot of around here- if find that static works real nice. Would you use webbing? Maybe I would, if i weren't so used to static.

Static rope is great for TR anchors, but unless you do a lot of TRing you probably don't own static rope. The institutional setting you refer to is definitely a specialized situation. Most climbers don't have dedicated TR gear of any kind. When they set up a top rope anchor, they use whatever gear they have from their lead rack. Usually that means that cordelletes and long slings make up the bulk of the anchor, which probably means that a friction knot on an arm of the anchor isn't an option in most cases.

Jay


carabiner96


Oct 23, 2007, 5:53 AM
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jt512 wrote:
carabiner96 wrote:
Yeah most of the toproping I do is in an institutional setting, where we get to use big freaking technical static rope. That said, when TR on my own time in the "two big trees" situation - which there are a lot of around here- if find that static works real nice. Would you use webbing? Maybe I would, if i weren't so used to static.

Static rope is great for TR anchors, but unless you do a lot of TRing you probably don't own static rope. The institutional setting you refer to is definitely a specialized situation. Most climbers don't have dedicated TR gear of any kind. When they set up a top rope anchor, they use whatever gear they have from their lead rack. Usually that means that cordelletes and long slings make up the bulk of the anchor, which probably means that a friction knot on an arm of the anchor isn't an option in most cases.

Jay

I think our geography is showing. Around here, most people have dedicated TR setups and not racks. Mostly because everything worth climbing here is easily tr'd...that's a gross generalization, but what I see around here is people getting first set up with TRing gear such as webbing and static, then, if so inclined, move into buying a rack.

Once my statics bit the dust, will I get a new one? Probably not. But it gets a hell of a lot of use now on routes that are short, awesome, but sketchy leads.


marvinz


Oct 23, 2007, 12:29 PM
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uso5590 wrote:
to explain better... the only way to the bottom of the cliff is from the top. To rappell down. I only have one rope, so i have to use my toprope anchor to reach the bottom, and the anchor point is 1 foot below the lip on the top of the cliff. Seems as though i would have nothing supporting me until i was below the power point.

I think uso5590 is edmontonalta. His next post will be how to ascend the mysterious 'access from above only toprope route' with a large/heavy haulbag (D.B. Cooper's gold).


desertwanderer81


Oct 23, 2007, 6:05 PM
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carabiner96 wrote:
I think our geography is showing. Around here, most people have dedicated TR setups and not racks. Mostly because everything worth climbing here is easily tr'd...that's a gross generalization, but what I see around here is people getting first set up with TRing gear such as webbing and static, then, if so inclined, move into buying a rack.

Once my statics bit the dust, will I get a new one? Probably not. But it gets a hell of a lot of use now on routes that are short, awesome, but sketchy leads.

Yeah....I know what you mean, I used to TR all the time before I moved out west. Now I would much prefer to lead anything I do if it is even remotely within my level. Those small single pitch cliffs where you can easily find a scramble lend themselves to TR'ing while out west.....TR'ing just isn't an option. With that said, out of the people I have seen who are TR'ing out east, most did so with webbing and not static rope. Maybe 1 in 10 parties were using a static rope. This differs from crag to crag, but that is just my observation.

With that said, I would much rather fall on a sling or daisy chain than onto a prussic that is on webbing....

I've seen webbing burnt clean from this kind of friction..... It's not pretty!


jt512


Oct 23, 2007, 7:08 PM
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desertwanderer81 wrote:
I would much rather fall on a sling or daisy chain than...[X]

Unless X = something like jumping in front of a speeding freight train, then your statement is naive and dangerous. Taking even a short static fall onto a sling can kill you and taking a static fall onto a daisy can destroy the daisy (do a little research on that one) and then kill you. I can think of no justification, other than ignorance, for using a daisy to back yourfself up while lowering yourself down to a TR anchor. A sling is better than nothing but, due to the danger of a static fall, just barely.

Jay


desertwanderer81


Oct 23, 2007, 8:00 PM
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A little discomfort is better than having a prussik cut through webbing which it WILL do without that much force.

Puting rope material directly on webbing is a short path to death.


Carnage


Oct 23, 2007, 8:36 PM
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Re: [desertwanderer81] rapping on a toprope anchor [In reply to]
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desertwanderer81 wrote:
A little discomfort is better than having a prussik cut through webbing which it WILL do without that much force.

Puting rope material directly on webbing is a short path to death.

no one is saying put a prusik on webbing. biner's system used static rope, she said she would attach a prusik to that.

also putting rope material directly on webbing does not equal death. in a pinch (some people even do it regularly), its ok to use webbing for friction knots on ropes. nylon webbing has a high enough melting point to be safe. Dynemma/spectra however, does not. if you try to tie a friction not with those, there is a good chance it will fail/do permanent damage.

something that is a short path to death is clipping a daisy chain into a bolt and then taking a short fall onto it.

edit for clarity: Im not saying if there is a piece of webbing hanging from above that you can prusik up it with 6mm accessory cord. Im saying if theres a 10mm rope hanging from above, you can prusik up it using webbing to tie the friction knot.


(This post was edited by Carnage on Oct 23, 2007, 8:39 PM)


desertwanderer81


Oct 23, 2007, 8:51 PM
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well that's fair, but I have personally seen prussiks melt webbing while doing some experimenting. It didn't take all that much to do it either. After watching webbing melt once, it doesn't take much convincing to never put material and avoid girth hitches without tons of friction.

And yes, puting a prussik onto a 10 mil rope is a totally different affair, I was just going off on a tangent.


thomasribiere


Oct 23, 2007, 8:53 PM
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james481 wrote:
desertwanderer81 wrote:
IMO you're overestimating the forces involved with a static setup falling 2 feet, but to each their own.

I can't recall anyone ever getting injured by setting up with a daisy chain.

Wasn't there an incident two or three months ago where a climber fell above an anchor he was attached to with a spectra sling and pulled the anchor, resulting in his death? IIRC, it was either on Mont Blanc or the Grand Jorasses. From what I read, he had climbed about two feet above his anchor on a static sling. He slipped, fell four feet onto the anchor, which then ripped from the impact force, sending him to his death below?

Regardless, when anchoring directly to anchors with no dynamic rope in the system, if I'm in a situation where there is any chance of falling on the anchor, I would use a Purcell tied in 7 or 8 mm perlon. The perlon stretches a bit to absorb force, and if you really generate a huge amount of force, the prussic will slip to help dissipate it.

http://www.rockclimbing.com/...;;page=unread#unread

I have myself traded my static sling to some dynamic piece of rope since I've read this thread and talked with friends.


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