Richard Delaney Archive
Load Cells have been used for decades to measure tension in many situations however most of the user friendly units, like crane scales, simply monitor relatively static systems. The units used to monitor fast events, like drop tests, have
The re-threaded Alpine Butterfly knot is a very useful in-line, low-gain knot for direct tie-ins to closed objects.
People often ask what peak impact force can be generated during falls. Impact force depends largely on the mass and velocity of the object at impact and how quickly the object stops. Put simply, the faster something
There is a standard language used in the technical specifications of carabiners but this is not well understood. This article is an attempt to clarify some common markings that appear on carabiners. It should be noted that
There have often been discussions about the so called “right” and “wrong” ways to tie a figure-of-8 knot and they seem to focus on whether the strand being loaded is on the “inside” or “outside” of the