Before giving this too much thought I want to see if anyone can shoot it down right away or has any idea of how to make it work. The basic idea is a hybrid base/canopy anchor. I'm imagining setting the line with a lower-able base tie as normal. Climb up to the tie in point, lanyard in, and then with the working end of the rope, tie some kind of slip knot on a bight (that best case scenario is that it could be untied while loaded) without undoing the base anchor. I see possible benefits of this being a canopy anchor, kind of backed up with a base anchor. 99% of the time, you could pull the slip knot at the end of the climb and retrieve the rope easily just like with a base anchor. Possibly in a rescue scenario, (if there is there a reliable slip know that can be undone while loaded?) you could undo the slip knot and lower the climber from the ground. Since everything will always be connected to the base anchor, if the base leg does get pulled accidentally, it would be maybe a few inch drop as it goes back into base anchor mode so long as you don't put a ton of slack in that....Anyone follow?
An Idea I haven't tried...
- Thread starter stheis004
- Start date
TimBr
Official Well Known Greeter
- Location
- Northern Virginia
@stheis004,
I don't know if this relates to what it is you're trying to do, but Kevin Bingham (@treebing) made this short video about the "horse knot", that might be of interest to you.
Tim
Edit: Oops, I neglected to include the link to the video when I originally made this post. Here is my attempt to provide that link.
https://m.youtube.com/#/watch?v=TDjjFksC1Zg
I don't know if this relates to what it is you're trying to do, but Kevin Bingham (@treebing) made this short video about the "horse knot", that might be of interest to you.
Tim
Edit: Oops, I neglected to include the link to the video when I originally made this post. Here is my attempt to provide that link.
https://m.youtube.com/#/watch?v=TDjjFksC1Zg
Last edited:
Tim nailed it. Try the Horse Knot, but be absolutely certain that the climb line is suitably passed over whatever union you decide to "knot" into, so a minimal fall will occur if the Horse Knot gets pulled out for some strange reason that could NEVER happen during normal tree work. Also be certain that the union can handle being used as a base anchor TIP. You can imagine the penalty paid if not...and obviously make sure the anchor side is actually anchored for the entire climb.
- Location
- South East England.
I've been thinking about this recently stheis004 but I haven't figured out a way of doing it.
The horse knot seems a good idea but I can't get my head around it whisky sitting at the table so I'll have to try it in the tree.
Looking forward to any more ideas coming to this thread.
Sent from my iPhone using Tapatalk
The horse knot seems a good idea but I can't get my head around it whisky sitting at the table so I'll have to try it in the tree.
Looking forward to any more ideas coming to this thread.
Sent from my iPhone using Tapatalk
lumberjackson
Participating member
- Location
- Portland, OR
I have thought about the same idea, but it seems like it defeats it's own purpose. If something happens to the base leg, say, a wild hand saw grabs it, then your slip knot up top isn't going to be doing so great. Also, your base leg is potentially still going to be where you will be working (with saws, rigging gear, falling limbs, yadda yadda).
Just my thoughts, let's not give up on the concept though
Just my thoughts, let's not give up on the concept though
JefLong
New member
- Location
- Melbourne Australia
I think your slip knot which can be untied while loaded will be compromised by falling logs (and give you a little scare) 1000 times before you need it for a rescue.
moss
Been here much more than a while
- Location
- Carlisle, Massachusetts, U.S.
The trick about releasable knots is that if they're well set up, they won't release under load, only when the climber's weight is off the system.
I've been playing with the fiddlestick concept that is being discussed in the SRT Redirects thread. It will release under load but stays put if setup properly. Yet another area of experimentation (exploding knots) that freaks people out but so far in my testing super-duper solid. I'm liking the fiddlestick better than slip-knot based releasable knots I've been using, it can be set up super tight but releases well. Depending on how these things are set up (canopy anchor, base anchor, redirect, etc.) all sorts of fail safes, two or 3-stage releases etc. can be built in to the system.
So as to the OP idea, I feel pretty strongly that if you have excellent (safe, reliable, works great) releasable canopy anchor, backing it with a base anchor might create more problems then it solves.
A peek into the lab (stay calm this is under study only):
Custom fiddlestick, configured for a base anchor. It's in there very tight, the release cord in this case is tied to the tail with plenty of slack on the ground so a falling log etc. won't release it. Slacking the rope does not change the tightness of the hitch. It can be set up equally well as a canopy anchor, in that case a release cord is attached to the bottom hole and thrown down from the tree. When the climber is back on the ground cord is pulled hard to pull the wide end of the fiddlestick down through the hitch, rope released. Same setup for redirects.
-AJ
I've been playing with the fiddlestick concept that is being discussed in the SRT Redirects thread. It will release under load but stays put if setup properly. Yet another area of experimentation (exploding knots) that freaks people out but so far in my testing super-duper solid. I'm liking the fiddlestick better than slip-knot based releasable knots I've been using, it can be set up super tight but releases well. Depending on how these things are set up (canopy anchor, base anchor, redirect, etc.) all sorts of fail safes, two or 3-stage releases etc. can be built in to the system.
So as to the OP idea, I feel pretty strongly that if you have excellent (safe, reliable, works great) releasable canopy anchor, backing it with a base anchor might create more problems then it solves.
A peek into the lab (stay calm this is under study only):
Custom fiddlestick, configured for a base anchor. It's in there very tight, the release cord in this case is tied to the tail with plenty of slack on the ground so a falling log etc. won't release it. Slacking the rope does not change the tightness of the hitch. It can be set up equally well as a canopy anchor, in that case a release cord is attached to the bottom hole and thrown down from the tree. When the climber is back on the ground cord is pulled hard to pull the wide end of the fiddlestick down through the hitch, rope released. Same setup for redirects.
-AJ
New threads New posts
-
test2
-
-
-
SCAM 3:1 MA and Remotely Retrievable Redirect
- Latest: southsoundtree
-
-
