We have been saying for years… “it doesn’t take 6 people to do a rescue”.  Really!  Two strong, smart and logical riggers (certainly no more than three) can do a raise and lower from just … So Much With So Very Little… Winch Power, Artificial High Directionals and Human CuriosityRead…

In certain cases of extreme urgency requiring a very rapid response, the rescuer can access the victim by descending on one rope. Once the emergency has been addressed, upward evacuation can be secured with two … Drop loop haul on the Petzl I’D for urgent rescue, with Petzl ASAPRead More…

Fall Factor 2  Richard Delaney  November 17, 2017  Free Articles  2 Comments In early 2016, I wrote a short piece on Fall Factors. It is published as the article, Fall Factor.  It was a brief article with a standard … Fall Factor 2Read More »

Fast Fours Mechanical Advantage System The Fast Fours is a simple variation on a standard set-of-fours. The difference is that the far end of the rope is not terminated on the becket of a pulley. … Fast Fours Mechanical Advantage SystemRead More »

My life is about to change The year is 1983 and we all felt super-powered. Each of had an itch to climb something big. We had a few days in our schedule so we figured, … The Greatest Time For A New Opportunity Is When All Other Things Have FailedRead…

The ZIGZAG mechanical Prusik allows the user to move around efficiently in a tree using classic Prusik pulley system technique. The linked rings provide precision and fluidity when moving around. The pulley is mounted on … Petzl ZigZag Mechanical Prusik For Arborists and Tree ClimbersRead More »