Member content Archive
The Skate Block is an excellent low-force technique for lowering and raising. The analysis of the Skate Block is a great example of the application of physics and this enables us to determine where the load should
Friction through Progress Capture Devices (PCDs). This image shows three different devices rigged and loaded as if positioned at the back of a hauling system. We can use the Capstan equation to predict the loss through each
There is a common claim that “Dropped aluminium carabiners should be discarded as they can suffer invisible damage or ‘micro-fractures’ that may cause them to break below their rated strength.” The history of this claim is unknown
Many manufacturers state that the maximum life of their webbing products is ten years. Many people seem to keep using webbing products older than 10 years so we decided to conduct some tests. You need to login to
Rope technicians use many different devices to attach to their back-up rope. These vary significantly in design and there have been suggestions that some may be more effective than others if the backup rope is supporting any
