Pulley (Pulley system): Difference between revisions

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In climbing and mountaineering pulleys are used mainly ~~during~~ rescue techniques. Sometimes they are employed during hauling.

In climbing and mountaineering pulleys are used mainly in rescue techniques. Sometimes they are employed during hauling.

== Principle of operation ==

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== 3-to-1 (2-to-1) Pulleys ==

~~These~~ pulleys cannot be used for lifting a full-body weight by a single person ~~in the most situation~~. However, they work way faster than the higher-ratio pulleys. ~~Their main use is in assisted lifting~~.

In most cases, these pulleys cannot be used for lifting a full-body weight by a single person. However, they work way faster than the higher-ratio pulleys. Therefore, they are mainly used when the lifted person helps with the pulling and for hauling.

=== Rope-support ===

~~TODO~~

See [[rope support with tuber]].

=== ~~Creavase~~ self-rescue ===

=== Crevasse self-rescue ===

TODO

== 5-to-1 (4-to-1) Pulley ==

These pulleys distribute the force in a way that lifting a person is possible without assistance. However due to the ratio the speed of lifting is very low and there is substantial friction from the amount of bends in the pulley system.

These pulleys distribute the force in a way that lifting a person is possible without assistance. However due to the ratio the speed of lifting is very low and in some cases there is substantial friction from the amount of bends in the pulley system.

=== Rescue ===

TODO

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-In climbing and mountaineering pulleys are used mainly during rescue techniques. Sometimes they are employed during hauling.
+{{messagebox_checkstate}}
+In climbing and mountaineering pulleys are used mainly in rescue techniques. Sometimes they are employed during hauling.
 == Principle of operation ==
@@ Line 16: / Line 18: @@
 == 3-to-1 (2-to-1) Pulleys ==
-These pulleys cannot be used for lifting a full-body weight by a single person in the most situation. However, they work way faster than the higher-ratio pulleys. Their main use is in assisted lifting.
+In most cases, these pulleys cannot be used for lifting a full-body weight by a single person. However, they work way faster than the higher-ratio pulleys. Therefore, they are mainly used when the lifted person helps with the pulling and for hauling.
 === Rope-support ===
-TODO
+See [[rope support with tuber]].
-=== Creavase self-rescue ===
+=== Crevasse self-rescue ===
 TODO
 == 5-to-1 (4-to-1) Pulley ==
-These pulleys distribute the force in a way that lifting a person is possible without assistance. However due to the ratio the speed of lifting is very low and there is substantial friction from the amount of bends in the pulley system.
+These pulleys distribute the force in a way that lifting a person is possible without assistance. However due to the ratio the speed of lifting is very low and in some cases there is substantial friction from the amount of bends in the pulley system.
 === Rescue ===
 TODO