Is this setup safe?

peder-d

peder-d

Location
Aarhus, Denmark
The following weeks, I'll be doing a lot of deadwooding in large trees in a park.
I have seen this setup at competitions, and it seems like a really cool way of making sure, that your ropeguide doesn't get stuck 30 meter up a large tree.

1. Does my setup look safe? It is ment to be mounted on my acces rope.
2. Do I need to backup the 2 prusik's? With a figure 8 or similar?

Thanks
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It looks ok...but the light is bad here and I'm seeing it only phone.

Why not use afloating false crotch on srt?

You wouldn't have to use a ground anchor, I've tied off in the tree and moved the TIP and anchor around as needed.
 
I don't see the point, either way you end up having to pull either the ring or the pulley through the crotch. Seems like extra work for the same end result.
 
It would work however, you would save gear and time using the secret weapon set up. If you are intent on using DdRT thats what i would do.

its never a bad idea to back up the prusiks with a stopper knot. more redundency is better then less.
 
If you rock a rope guide or pulley saver or even just a ring/ring fs, set your access line in or near your final TIP, install your RG/pulley saver/r2r, whatever, and then attach the tail of your fs to one side of your access line. Then, pull your FS out like normal, it gets caught by the access line, and lower it to the ground. No need to pass knots/hardware, what have you through a crotch.

Casey's idea is great also, it creates a pulleysaver out of your access line. Just shorten up the tether on the pulley and you're good to go on that route.
 
I climb on a set up similar to that all the time, in fact I did it today. I do what others have said and just tie an alpine butterfly and pass my pulley through that. I think its one of the best, and most secure mid line anchor points going. It's easily retrievable from the ground, way easier than the whole pulley off the footlock prussic idea. I use my footlock prussic/ biner to spike the line, it's one less thing on my harness and totally "compliant". I say go for it.
 
floating pulley Ddrt: no isolation, ground anchor for rescue if needed, work the tree from the ground up. or floating pulley on srt line from accent to the tip to work the tree from the tip down.
 
[ QUOTE ]
floating pulley Ddrt: no isolation, ground anchor for rescue if needed, work the tree from the ground up. or floating pulley on srt line from accent to the tip to work the tree from the tip down.

[/ QUOTE ]

All these are good options for sure, but the system in question doesn't put 2x the load at the tie in point.
 
If you are climbing on any TIP that might be compromised by a theoretical 2:1 load you are climbing on an unsafe tip.

An accepted SAfe Working Load for ropes, gear etc is 10:1. why is anyone even considering a TIP with a 2:1 safety factor?!
 
You have to look at a potential TIP or Redirect and do the equations. 2:1 and 10:1 numbers are easy to use so plug them in
I want a crotch to hold ten of me. If I trunk tie on same limb in a particular way that puts a lot of horizontal force on it, and maybe it looks like it will only hold five of me...
In those situations it might be better to send a running bowline and not trunk tie. Other ways to get you 10;1 is to spread your angles at the redirect. this might involve another throw.

In SRT, instead of isolating your line,

I like to spread it as far through the canopy as I can. I will throw it through one tree, then throw to the neighboring tree pull through my rope and tie off at the trunk. I climb one tree and then my line is set in the next tree and I am into the second tree.


I know there are certain crotches that I pass on tying a trunk tie because it makes me uncomfortable. I want 10:1. If I cant get that with a trunk tied system I look for other means. Either way, for a big high production lots of climbing job its SRT.

derail:

I may be missing something but no I don't see anything inherently unsafe about your system. I dont think you need backups because your weight is distrubuted between both legs of the ropes and two prussics essentially. You've seen it done in a comp it must have passed through some eyes there right?
 
A static false crotch (i.e. ring/ring friction saver, ropeguide, running bowline, etc) would be more ideal on pruning jobs. Working off an SRT line with a trunk anchor is going to lead to some amount of damage and "sawing" into the tree's tissues at the apical TIP. A static tie in would avoid that. Or threading the line through multiple unions would dissipate the negative effects somewhat.

Peter,
I've tried that setup with the pinto loop from my PulleySaver and a midline butterfly. It works fine. I don't see using that technique a lot but it's a nice idea.
 
Thanks, guys
cool.gif


I tried to tie an alpine butterfly instead of the prusik+ring, but I had a hard time getting the pulley through, when I tried to retrieve it. The snakebite rope gets a bit stiff after loading, so the alpine-eye gets very narrow. Therefore the prusik+ring.
I use a cocoon in my ropeguide, and it works great.
Maybe I should use the butterfly eye, and then attach this:
http://www.freeworker.de/store/art/ropeguide/art-spreizhuelse-primus-1.html
on my sling for the pulley?

I often use to tie a rope to my ropeguide to be able to retrieve it from the ground. 19 out of 20 it works great - BUT I have had some problems, where it gets stuck, and it is a pain (!!!) in the a§§ to have to footlock all the way up again. Especialy if you have used your acces rope as the "retriaval rope".
And I like to have the acces rope hanging, when I work, in case I need to be rescued.
 
[ QUOTE ]
If you are climbing on any TIP that might be compromised by a theoretical 2:1 load you are climbing on an unsafe tip.

An accepted SAfe Working Load for ropes, gear etc is 10:1. why is anyone even considering a TIP with a 2:1 safety factor?!

[/ QUOTE ]

He said "2X", not a safety factor of 2 to 1.
You're talking about 2 totally different topics.
 
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