Members: TibLoc Tests
I purchased a pair of Petzl TibLoc “Ultra-light emergency ascenders” in 1999 when I was working as a climbing instructor. I liked the idea of a simple rope-grab that was compact and thus maximised the very short
mechanical advantage Archive
Rig-For-Rescue
Suspension Trauma There has been some new research looking at the onset of suspension trauma. This was presented at the International Commission for Alpine Rescue (ICAR) 2018 congress in Andorra. This was a study using human trials
Guy Tensioning Systems
There are many ways to tension the guy lines and anchor legs we use in our systems but I’d like to present the one I use most. I will start by mentioning that this works best with
Members: Mechanical Advantage Quiz Analysis
The first quiz on that we published was on Mechanical Advantage and has had over 2,200 completions with an average result of 53.81%. If we assume that the people that have completed this quiz are a representative sample of
Members: Mechanical Advantage
This article explores the basic physics concept of a lever. This concept is then used to calculate mechanical advantage in roped systems. Levers Most people will be familiar with the concept of a lever, however it is useful to