יורי פלדמן: יצירת דף עם התוכן " 200px 200px '''גלגלת פלאסטיק''' {{LTR}} A plastic pulley is actually a small plastic drum, made to clip on a carabiner. These pulleys do not have a bearing, and they simply roll on the biner, using is as an axle. Plastic pulleys work best onbiners that are symetric along their lonx axle, i.e. oval and HMS biners. The do not roll well on D shaped bine..."

2024-12-05T06:34:48Z

יצירת דף עם התוכן " right|200px right|200px '''גלגלת פלאסטיק''' {{LTR}} A plastic pulley is actually a small plastic drum, made to clip on a carabiner. These pulleys do not have a bearing, and they simply roll on the biner, using is as an axle. Plastic pulleys work best onbiners that are symetric along their lonx axle, i.e. oval and HMS biners. The do not roll well on D shaped bine..."

דף חדש

[[image: Plasticpulley.jpg|right|200px]]
[[image: Plasticpulleyonbinner.jpg|right|200px]]
'''[[גלגלת פלאסטיק]]'''
{{LTR}}

A plastic pulley is actually a small plastic drum, made to clip on a [[carabiner]]. These [[pulleys]] do not have a bearing, and they simply roll on the biner, using is as an axle. Plastic pulleys work best onbiners that are symetric along their lonx axle, i.e. oval and [[HMS]] biners. The do not roll well on D shaped biners. Also, they will roll better on biners with circular cross section.

Plastic pulleys are dfinitely less efficient than "real" pulleys, because they have no bearing to reduce [[friction]]. They do, however, have much less friction than just a biner, and are much lighter than "real\" pulleys. It is a good idea for [[alpinism|alpinists]] and [[multipitch]] [[trad]] climbers to have one on the harness, for emergencies that require [[hauling]] and/or a mechanical advantage system.

A better option is to have a [[revolver]], a biner from DMM that has a tiny pulley at the point where the rope passes.
----
contributions to this page by: : [[user: Mica Yaniv|Mica yaniv]] and others...

[[category: gear]][[category: Mountaineering]][[category: gear ]][[category: rock climbing]][[category: Aid climbing]]

Plastic pulley - היסטוריית גרסאות