pull tests Archive
A new set of tests checking the strength of some Nylon and Dyneema climbing slings which are more than 10 years old.
Traditionally many have considered the Alpine Butterfly knot to be a mid-line knot rather than an end-line knot. This report considers its use as an end-line knot. You need to login to view the rest of the
I have heard many justifications for the choice of a Figure-of-9 knot over the Figure-of-8 knot and they normally come down to: “Easier to untie after heavy loading”; “Stronger” (maintain more of the strength of the host
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
In 2015, RopeLab conducted some tests on Sterling rope’s 5.9mm PowerCord. I was interested in its use in anchoring and guying systems and wanted to see how it performed when knotted. The tests results are published in