fb-sling friction knot used as a replacement for the garda knot in a hoist setup

Load is lifted. The friction knot pushes against the biner and lets the rope pass.	Load has activated the friction knot, which jams the rope.	A pully decreases the unwanted friction of the biner for approx. 25%. The pully used here is an emergency pully type "Petzl Ultra Leger"

former considerations by Franz Bachmann to optimize the redirection in a hoist setup

- before the development of the fb-sling friction knot

I think, the drawings and values are clear without the knowledge of the Italian or German language