A Z-Drag or Z-Rig is an arrangement of lines and pulleys, effectively forming a block and tackle, that is commonly used in rescue situations. [1] The basic arrangement results in pulling the hauling end 3 times the distance the load is moved, providing a theoretical mechanical advantage of three to one. [2][3][4] In actual practice the ...

2017年3月12日 · A z-pulley or z-drag is a way of gaining leverage to pull a rope tight or to pull an object or person closer to the anchor. It is commonly used to tighten Tyrolean traverses, recover pinned boats in

Three-to-one systems are often called "z-rigs" due to their shape. Don't, however, confuse the 3:1 with the similarly-shaped 2:1 with a COD pulley or a 2:1 piggyback system. The following illustrations show 3:1 systems without and with a COD pulley. Some rescuers find it challenging to remember how to rig a 3:1 system.

Learn how to create a Z pulley system diagram and understand its components and uses. A Z pulley system is commonly used in rope rescue scenarios to increase mechanical advantage and lift heavy loads. Explore step-by-step instructions and illustrations to help you visualize the setup and operation of the Z pulley system.

2018年12月17日 · The 2:1 Z pull haul is generally attributed to Chongo, a legendary Yosemite dirtbag who was famous for extended vertical camping trips on El Capitan with ridiculously large loads.

The 3:1 Z-pulley is one common hauling system, which works well for a team with three or more people. The ratio refers to how much force you can leverage using the rope and pulley. In this 3:1 system, for every unit of force that you pull on the rope, the haul system pulls with three times as much force. The Z-pulley system 1.

2019年2月3日 · The “Z” drag (so named because the rope looks like the letter “Z” if you turn your head sideways) which gives you a theoretical 3:1 mechanical advantage, is one of the fundamental setups of crevasse and rock rescue.

ROLLCLIP Z is a pulley-carabiner with a gate opening on the non-pulley side to facilitate installation on anchors and devices. It is available in two locking systems: automatic TRIACT-LOCK system or manual SCREW-LOCK system.

2023年9月4日 · Build a 3:1 Z drag haul system with the rescue rope. Use the butterfly knot you tied as the anchor point. You need a progress capture in the system; here I'm using a Petzl Micro Traxion. Pro tip: dig out a little hole with your hands under the Traxion pulley. This prevents snow/ice from jamming into the toothed cam. =^)

The NRS Z-Drag kit has everything you need to protect and rescue your pride and joy—we mean your boating rig, of course—from the pin you never saw coming. Includes the necessary components to set up a 3:1 mechanical advantage Z-Drag for magnifying your pulling effort. Z-Drag Kits include a 150' length of rope.