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Multi-pitch climbing, which can be done in sport or traditional formats, requires added rope devices like ascenders and descenders for moving up and down fixed-ropes. The big wall variant requires heavy-duty rope devices for carrying more gear such as portaledges and provisions, which are carried in haul bags .
An ascender is a device (usually mechanical) used for directly ascending, or for facilitating protection, with a fixed rope when climbing on steep mountain terrain. A form introduced in the 1950s became so popular it began the term "Jumar" for the device, and the verb "to jumar" to describe its use in ascending.
Sit-stand systems (also known as frog rig) - one ascender is at chest level attached to the sit harness, and a second is held in the hand with a long loop of rope for the feet. Movement up the rope is by repeated moving of the foot loop ascender up the rope, pushing up with both feet together, and sitting, supported by the chest ascender.
The ascender will glide smoothly up the rope when the belayer takes in slack. If the climber falls, the ascender will lock up. (I’m giving them the benefit of the doubt and assuming that the ...
This device utilizes a large surface area in contact with a climbing rope to provide sufficient friction along with the proper technique to be used as a belay device or for rappelling. A figure 8 (sometimes just referred to as an 8) is used in conjunction with a climbing harness and locking carabiner to control a belayed climber's descent, or ...
A Tubular Belay device. Also called a "tube", this type of device generally has a tubular or rectangular shape. It is an evolution of the Sticht plate's concept by creating more surface area to dissipate heat and the ability to create sharper angles which creates a stronger degree of friction which has greater stopping power.
A Gibbs-style ascender. The next level of device development improved on the locking limitations of the prusik sling by utilizing a cam that is activated by the climber's body moving down to rotate the simple grab cam inside a rigid frame. The climber's harness is directly attached to the cam and the frame encapsulates the rope.
A Reverso is a belay device developed and patented by Petzl, used for example in rock-climbing and other activities which involves rope-work. Another version of this device is the Reversino, intended for use with thinner ropes. A Reverso can be used to belay the leader, one or two seconds, or as a descender during rappelling. It can also be ...
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