The sharp angle will have fatal consequences for the horizontal cutting of the rope. When the rope is bearing the weight, the rope can be cut easily with a sharp object. In UIAA's standard anti-cutting test, it is required to drop an 80 kg weight from a height of 5 meters, and the rope is cut on the edge of a sharp object with a radius of 5 mm placed laterally. In the first such experiment, the rope should not be damaged. Only in this way can it pass the anti-cutting index test. The anti-cutting index of climbing ropes of different brands is very different. For example, the EDEIWEISS rope produced in Austria can withstand up to 6-7 times of similar tests. Some models of EDELWEISS climbing ropes can even withstand a sharp edge cutting test with a radius of 0.75 mm. Under the circumstances, most of the other climbing ropes were cut.
Wear resistance index
Attach a 10 kg weight to the climbing rope, rub it longitudinally on the rotating sand wheel, until the outer net of the rope is touched (that is, the rope is white as climbers often say), and the time the rope is worn out directly reflects the rope Longitudinal wear resistance. Generally speaking, mountaineering power ropes with the PERDUR logo have a wear resistance of more than 30% longer than other ropes in similar tests.
Waterproof rope is what we often call dry rope. The outer net of this kind of rope is generally treated with TEFLON waterproofing. The strength of the rope will be reduced by more than 20% after being soaked in water. In mountain climbing, the strength of non-waterproof ropes will be greatly reduced after being soaked by snow water, which is very dangerous.
Practice has proved that dry rope has the following obvious advantages:
(1) Not only prevents water from entering the inner core, but also the outer net will quickly dry out after being wetted by water.
(2) The weight changes little after immersion.
(3) It rarely freezes hard after being immersed in water.
(4) Longer service life.
In addition, the diameter of the power rope of UIAA1 is generally from 9.9-11MM, and the use of these ropes is also very different. Generally speaking, 11MM or 10.5MM ropes are used for BIGWALL or rock climbing, and 10MM or 9.9MM ropes are lighter and are mostly used for mountaineering. It is best to use dry rope for mountaineering, BIGWALL or ice climbing.
For the detailed usage of climbing rope, please refer to the product manual or CATALOG of each manufacturer. In short, the most expensive is not necessarily the best. Only the one that matches your climbing purpose is the best choice for you.
Method of binding climbing rope
This is a method of dividing the rope into left and right sides, and binding the rope without kinking. When dividing the rope, the length of one time is best equal to the maximum distance between the two hands. If it is too short, the tied rope may become too large. When binding, if one hand cannot handle it, it can also be placed on the wrist.