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Tuomas Pöysti, a good friend of RopeLab, has written this article presenting his thoughts on analysing pulley systems.
Several manufacturers make versions of passive belay devices that may be used in an auto-locking mode commonly known as “Guide Mode”. You need to be logged in to view the rest of the content. Please Log In.
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