Richard Delaney Archive
Tuomas Pöysti, a good friend of RopeLab, has written this article presenting his thoughts on analysing pulley systems.
There is a growing awareness of the benefits of dual main over the more traditional single main/single backup rope systems. Single main/single backup systems normally see the task undertaken using a main rope with another backup rope
There are many ways to tie a single rope to a pair of anchor points. The two methods most commonly used are: the Alpine Butterfly & Figure-of-8 “Y-hang”.the Figure-of-8 bunny ears knot. Rope access technicians and rescue
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. Note: Follow the following link to see a previous discussion
There are so many opinions on just how much tail should be left when tying a Figure-of-8 on-a-bight, and whether it needs a separate stopper knot to secure the tail. Commonly heard statements include: At least a