Rope drag

The cable is climbing the extra weight of the climbing rope that is created by the friction over rocky irregularities or by securing points ( carbine ). The climber must exert an additional force to keep climbing can. The friction over the securing points of the cable is greater, the more change of direction in the rope course occur. In extreme cases, the cable may be so large that getting ahead is no longer possible.

The size of the cable can be calculated using the Euler Eytelwein formula to calculate for an arbitrary arrangement of securing points. The cable, which is caused by the friction between the rope and securing points can be expressed by an effective rope weight, which is always greater than or equal to the pure rope weight. This effective weight rope depends exponentially on the sum of all angles that are formed when the climber produces a change of direction in the rope course. Contrary to intuition affect " early Einhängfehler " not as strong as "late Einhängfehler ", ie a straightening of the rope runs through longer quickdraws is especially important when a lot of rope has been spent already.