<BLOCKQUOTE><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><HR>Originally posted by Yoav Bar-Ness:
As another backup, you can tie off the end of the choked leg to the trunk or another anchor. Ground crew can untie it when you are up top.<HR></BLOCKQUOTE>
MrPrez:
OK....when I wrote that I was having trouble thinking out which word was which: the choked/fixed leg is the thats set up so that you can climb on it. Use a figure 8 on a bight, rather than a butterfly- just like on the grigri manual. You will probably have to use a clip to actually make the noose, tying it requires something like a rethreaded 8 on a bight, or a Bow on a bight, or pulling the end of the ropes up and sliding it through.
The nonchoked/loose end is the one that you could pull down on from the ground when all weight is off and retrieve the set up. A cord can take the place of the loose end for retrieval if the rope is not 3x the height of the tree.
What I meant was that you should tie off the choked end- when your connection to that line fails the noose slides downwards (like you were pulling on the cordage to unrig the thing) but instead of sliding all the way down the whole thing stops attached to the other side.
While we are on the topic- two other things.
If you've choked one side, I think you should just place your ascenders on the fixed line and not on the loose line. Then tie the LOOSE end off on the ground. If the noose fails- which it shouldn't- then it will be a pretty standard setup- one end tied off, over the branch, and you climb the other side.
Also, I used a noose in a tree in my backyard the other day to descend. As I was going down, I hopped around a branch, which meant that the fixed(lifebearing) end and loose (pulldown) end were on different sides. This snarfed the whole operation and I had to go up to the top and derig the whole thing.
