Climb the master rope The rope is the most important equipment for a climber, so be careful when choosing. Climbers make a lot of classifications for climbing, and rope producers produce different ropes accordingly. After you understand this article, you have basic knowledge of picking ropes. Dynamic Rope Construction Dynamic Rope Manufacturers classify ropes into two categories: power ropes and static ropes. Static ropes cannot absorb momentum by telescoping and are more durable than motive ropes. It is generally used as a route rope but never used as a protective rope below. The power cord is able to absorb and absorb the impact generated by the shedding and is designed for the protection of the lower part. This article is devoted to the discussion of power cords. Modern cords consist of a cord and a jacket that protects the cord from wear. length The length of the rope is generally measured in meters. Now the 55 and 60 meters ropes have replaced the past 50 meters. Although the long rope is heavier, it can climb longer rock walls. Manufacturers usually make lengths of 50, 55,60, and 70 meters. diameter The diameter is generally expressed in millimeters. 15 years ago, the diameter of 11 mm was popular. Now 10.5 mm and 10 mm times. Even some single ropes are 9.6 and 9.6 mm in diameter. Large diameter ropes have good insurance and durability. Strings are generally used for mountaineering protection. weight The weight is generally calculated in grams/meter. Weight is a better measure than diameter. Do not pursue lighter and choose a small diameter rope. Rope test standard The International Mountaineering Association Coalition (UIAA) is the authority that develops the string testing standards. fall The standard for UIAA testing rope strength is drop test. Test a single rope with a weight of 80 kg. During the test, fix one end of the rope so that a 9.2-foot rope will fall 16.4 feet. This will produce a 1.8 drop index (drop height divided by the length of the rope). The theoretically most severe drop index is 2. The higher the drop index, the more limited the rope absorbs impact energy. During the test, 80 kg of weight fell over and over until the rope broke. The environment of the UIAA drop test is more stringent than when it is actually climbed. If the number of drops in the test is 7, it does not mean that you have to drop it after actually falling 7 times. But if the dropped rope is too long, you have to consider throwing it away. momentum The impact should also be considered in the drop test. The UIAA's highest standard for impact on the first drop was 985 kg. Static elongation Hang a 65 kilogram (176 pound) weight on one end of the rope to see how long it is. When the weight is loaded, the rope will definitely stretch a little. The UIAA standard is within 8%. But in the fall, it is different, the rope will stretch 20-30% in the UIAA test. Rope Jacket Slide When the rope is subjected to friction, the outer jacket slides along the rope core. During UIAA testing, a 45-kilogram weight was hung on a 2,2-meter rope and pulled on the edges five times. The coat should not slide more than 4 centimeters. Rope maintenance The best way is to use a rope bag. It keeps the rope free from chemical odors or dirt. Do not expose in the sun for a long time, do not step on it, and do not let stones or small things stick to the rope. Keep the rope in a cool, dry place. If the rope is dirty, be sure to wash it with non-chemicals in a large-capacity washing machine. An open top washing machine will entangle your rope. If your rope is severely dropped once, or if it is worn badly, or if your hand can touch the flat cord, then change rope. If you climb 3-4 times a week, please change the rope for 4 months if you occasionally Use, please change for 4 years, because nylon will age. Wooden Tip,Wooden Filter Tips,Rolling Wood Filter Tips,Cigarette Wood Filter Tips NANTONG OUFEIYA IMP& EXP CO.,LTD , https://www.jsnantongoufeiya.com