Yet another trunk anchor question...

[softbankhawks]

Well...

There are a multitude I know and perhaps the most simple is to generate enough friction by wrapping and wrapping without tieing off at all but I want to really streamline an idea and I need some help.

I want a trunk anchor that is formed with a seperate piece of rope, does not have rope on rope parts and is karabiner-less. Lightweight is best of course.

 

It is not for contract climbing and so set up time is not an issue.

 

Thanks

[DrewB]

i like the rigging hub personally but it does still use 2 carabiners for the prussic and added friction. the ISC scarab is also pretty good to use but still uses a crab

[Pedroski]

What's wrong with rope on rope parts for an anchor, especially if using a separate bit of rope? 3 or more half hitches around the trunk, secured with a timber hitch looks sweet and also means the climber can be lowered safely if necessary. Or secure a figure 8 or other belay device to the tree with rope/webbing, route the climbing line correctly through the belay belay device and lock it off. Keep enough line on the ground and again you've got something where the climber can be lowered easily.

[softbankhawks]

Drew, yes, the hub is great although I dont own one yet and wonder if I can work my idea out without one.

I have loads of time on my hands Pedroski and wonder if my idea is attainable, I thought that I'd give it a go. Your suggestions are great and valid it's just that they fail to fullfill my criteria!

So far I like the multisling. Maybe a load releasing hitch could go from multisling to a ring or 8 on main line. Dont know how I would hardlock the climbing line though?

[Peter]

Fig 8 choked onto 10mm tenex deadeye sling, tied with a timber hitch or cow hitch depending on trunk diameter relative to sling length.

[softbankhawks]

Peter that sounds incredibly efficient. How would I get around the rope on rope aspect though. I'm not implying an issue with cow or timber hitches....just wondering is all.

[Pedroski]

Something like TEUFELBERGER Multi-Anchor? It's a rope with rings, and if you combine it with a loop then it can be used as a trunk anchor. But then, there's still rope-on-rope as you have a friction hitch for adjustment, and there's rope-on-rope due to stitched ends. Again, it's nowt that can't be done with a bit of rope and a krab or 8 etc for lowering the climber.

How about a ratchet strap with an attachment point for figure 8 to hold and lock the climbing line? But then again, there's rope on rope when tying the hitch to lock the line through the 8. Unless you do away with the 8 and used a toothed cam device such as Petzl Traxion in its place. You can't release the Traxion under load, but if you need to lower the climber you can still do so by connecting in the fig 8 descender in the tail end of rope (provided you're keeping enough length to lower the climber), pulling the tail through the Traxion (the built in pulley helps here) to take the load off, then releasing the Traxion's toothed cam. You can then lower the climber on the 8.

[David Humphries]

Well...

There are a multitude I know and perhaps the most simple is to generate enough friction by wrapping and wrapping without tieing off at all but I want to really streamline an idea and I need some help.

I want a trunk anchor that is formed with a seperate piece of rope, does not have rope on rope parts and is karabiner-less. Lightweight is best of course.

 

It is not for contract climbing and so set up time is not an issue.

 

Thanks

 

 

Paul, this isn't particularly lightweight & possibly not exactly what you're looking for (few too many ports for me noggin to get what ya mean, I'd imagine) but thought I'd offer up this for debate.

 

We've pretty much gone over to fig 8 with a blakes back up now.

.

[Peter]

If you used a small 8, and spliced a large thimble into the eye, steel or plastic, that would eliminate the rope on rope aspect.

 

Alternatively, splice an ally ring into the deadeye, and attach the 8 with a short sling, girth hitched both ends.

[DrewB]

yep, splice this Rock Exotica Mico Eight with side ears some 6mm OV cordage for a micro trunk belay. nice thinking peter