Originally Posted by 6 feet over
Now Iím really confused. I thought a prussic knot was nothing more than a circle of rope that is looped (3 times) around a larger diameter rope, and can be slid along its length, both ways, but will grab when pulled under pressure.
I use this loop on a stationary vertical rope that is along a tree trunk while climbing and descending from tree stands for archery season. A biner through the prussic loop allows us to have our safety harness follow us up and down, yet will hold if we fall.
Iím not seeing a prussic knot in the pictured set up. Is there a difference between a prussic knot and a prussic loop?
Help me, help me, Iím loosing my mind!
The cinch buckle is playing the role of the "stationary vertical rope" here. Note the several loops around one stem of the buckle. That's the prussik knot.
I don't see in the picture whether the two ends coming off of the prussik knot join in a loop or not. I don't use this arrangement. What someone could do, I think, is form a largish bowline loop at the end of a cord, attach that loop to the cinch buckle as shown with a prussik, and so (if done carefully) have both strands of cord to the knot be carrying load. It may just be though that folks don't form that first loop, leave a "long" end and a "short" end coming off the prussik, and have the load be carried only along the long end.