Again.....the wrap you are taking around the limb or block is not lowering the load placed on the biner. It does not matter if it's a block or a limb or if you wrapped the rope dozen times. What you are doing only reduces the load on the biner if the piece can not rotate.
In Ekka's example the load on the biner is being reduced. In yours it is not.
What we are talking about is basic physics and it's important that it is understood, especially by those teaching others. The safety factors built into the gear we use lets us get away with doing things we do not understand but every now and then it comes back to bite one of us on the ass.
Carabiners have a greatly reduced strength when side loaded. It varies based on the design of the biner but loading a biner while it is pressed up against a curved surface greatly reduces it strength.
I use biners and rope interchangeably....often in the same tree and within minutes of each other. I almost always have six slings with six biners hanging on my saddle. If it's just a trim maybe only three. Speedlining is really cool and a practice I've been using since 1989 or so.
I use srt a lot to ascend on a rope that is tied around a limb using a running bowline. Often the limb is only 4 inches or so in diameter. Do you see the importance of knowing what is happening in the running bowline Vs a biner used in the same application? I know guys that will use a biner is such an application and they have never had a biner failure. Do you think their lack of a failure influences my decision to use a running bowline? It doesn't.
Be safe and live long!
I agree the load is reduced in Ekka diagram.
I did not suggest there was any reduction in my own technique I simply drew it so you could see exactly how it was being done and dissect it for comment. The two wraps or occasionally three is for grip on the branch not to reduce krab fatigue.
Once again you talk about side loading as though it was proven to damage the krab at ANY load rather than any EXTREME load. Numbers are really important here mate. Can you find any reliable data that talks about the load required to induce even the smallest distortion in a steel krab?
Most important point. I appreciate all the information posted so far. One of the best parts of a trade forum is the ability to get many different opinions on the same thing.
L Yeah but now you're getting to the point were a bowline or running bowline would be damn near just as quick.
