Marc-Antoine
TreeHouser
For the ultrasling, as I see it, the 2 brummels are locked together if pulled in one direction (pulling each rope going through the eye on the other) but can slide away in the other direction (pulling each rope by the eye side). That gives the possibility of some movement, so more wear can be expected. With 3 brummels, its locked both ways, as one is jammed between the two others.
2 brummels are fine to catch a ring because the ring takes out all possibility of play/movement of both parts of the rope (if snugged correctly).
2 brummels are fine to catch a ring because the ring takes out all possibility of play/movement of both parts of the rope (if snugged correctly).