friction Archive
The Transport Hitch can be used to tension and hold a load in a limited set of scenarios. It is an interesting study of physics and it helps us to understand the importance of friction. This knot
The Figure-8 descender has been use for over 50 years and most hardware manufacturers have made at least one form of this device. This long history and the simplicity of the device has meant that it does
It is common for rope technicians to work with two ropes. The secondary rope serves as fall protection if the primary rope is severed. This initiates a sudden load over contact points and places significant forces on
There are many improvised and proprietary options for both protecting ropes and managing friction over edges. Rope access technicians have opted historically for simple, light weight solutions that provide protection for: limited rope movement during edge transitions,
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