Classification and purchase of crampons

There are many types of claws, there are different classification methods. From the fixed way, there are tie-type (tied), full card and the front of the difference between the card; from the structure, there are hard, semi-hard and soft; from climbing use, climbing / snow walking and high Difficulty Falls Ice / Mixed Route Climbing Differences.
Talk about lace and card: full card crampons can only and before and after the card slot with a hiking boots. This kind of boots have a strong midsole, so be able to hold the crampons. While the use of tied crampons is relatively wide, you can match any type of boots. The claws of the claws are too little trouble. Personally think that the front of the card after the most convenient, but asked the boots have a card slot.
Modern cramps are made of high performance alloy steel. Hard pawl frame is generally made of vertical steel, horizontal direction can not bend, such as the domestic more Trango Harpoon, used for high technical requirements of the waterfall ice and mixed routes; semi-hard claws are generally horizontal Steel, the force of the case, can be slightly deformed to fit the shape of the soles, such as CharletMoser S12, most of the mountain climbing / ice claw is this type; soft crampons can be bent with the soles of the , Such as CharletMoser's Ecrin, can be with the soles of the soft boots, and even some types of foot shoes. This kind of crampons is suitable for glacier walking and technical requirements are not high mountain climbing.
The front of the claw is used for climbing and general ice climbing, suitable for snow and not too hard ice; and before the front teeth claws due to strong penetration, particularly good at dealing with extremely hard ice, its role is technology Requires high hard ice and mixed routes. In addition to the selection of crampons, the need to pay attention to is the second pair of front teeth position, the more forward, then the greater the role of support the better angle, the more suitable for the steep ice wall, but walking more cost some effort. Such as CM's S12 and Black Ice, the latter's second pair of front teeth more prominent, climbing performance is even better.
The stability of the claw claw problem: Some people say that the card is not as good as tied claw claw stability, easy to fall off. In fact, generally because the claws and boots did not cooperate with the good. Most of the cards are now backed up for the sake of insurance.
Ice claw maintenance: ice claw using Ni-Mo-Cr alloy steel, strength and toughness than the average carbon steel. After the use of glue on the ice block should be cleaned up, so as not to become snow corrosion metal, causing rust. Long time the use of ice claws will be blunt, should be promptly with their hands to rub them, do not use electric grinding wheel, because the high temperature of the electric grinding wheel will make metal annealing. Card in front of the claws of the wire must be properly matched with the mountain boots, if not appropriate, you can use the rubber hammer beat to modify.
Anti-skidboard: climbing wet snow slope, the snow is particularly easy to dip between the claws and soles, not a long time will form a large wet snowball. This is very dangerous. Once the formation of snowballs, should immediately use the ice pick handle to clean up, prevent slipping. The use of anti-skidboards can partially solve this problem. Some brands have finished products for sale, but also some homemade: to find a piece of plastic, cut the size of the pawls than fixed, fixed on the claws on it. Anti-stick snowboard can solve the problem of sticky snow to a large extent, but still can not be taken lightly.