Myth # 14: Prusik cord lengths should be standard.
Prusik cord lengths are dependent on many factors. Spouting specific lengths for optimum performance, i.e. 65” and 54” is inaccurate. Let’s detail what must occur. Prusik cord should be about 70% the diameter of the primary climbing line (i.e. 6 mm Prusik cord 9 mm primary, or 8 mm Prusik cord on 11.1 mm primary, or 9 mm Prusik cord on 12.5 mm primary climbing line). The breaking strength of your Prusik cord should be approximately half the breaking strength of your primary climbing line to optimize the strength of your rigging. There should be a ¾” space between the bottom of a PMP and the end of the Prusik hitch.
