As long as you ride a bicycle, you must have tried to feel very cool from some of the slopes. This is the most primitive DOWNHILL (hill downhill, referred to as DH) movement. As an extreme sport known for its stimulation and danger, DH has long been popular in some European and American countries. The reason is simple - it is very challenging. Imagine taking a bicycle and quickly gliding down a complex and variable mountain road at a speed of 50-80 kilometers per hour, or even higher. The risk factor is definitely no more than 200-300 kilometers per hour for an F-1 driver driving a car. The danger of "flying" on the track near the speed of the aircraft is low. However, many players believe that the thrill of DH sports is that they rely on machinery to create pleasure, such as Formula One, motorcycle racing and other unmatched.
Because DH is so fast, physical protection measures for athletes cannot be ignored. A DH rider, in addition to a set of excellent material (color is more cool) of the sweater and a pair of off-road bicycle shoes, there is a specially designed for off-road motorcycles and DH's light, protective and good "full face helmet." It is mostly a high-toughness carbon fiber shell, a foam rubber inner layer, a buffer rubber grating in front of the nose and mouth, and a transparent eye mask with high visibility. In addition, the body also has a comprehensive protection of body armor. These include an armor that connects the shoulder pads, arm guards, elbow pads, wrist guards, and chest protectors, a pair of iron or plastic kneepads with long and calf shins, and a girdle. Of course, there is a pair of soft leather gloves that feel good. In addition, bicycle pants are also very particular about, some "important parts" such as inner thigh, buttocks also need to use thick cotton pad to protect.
The structure and parts of the DH car are directly related to the player's own safety. The body of the DH can be divided into several parts. The first is the frame, most of the frame of the DH car uses a central suspension with a suspension drum in between, and the frame quality is mostly pressurized aluminum alloy carbon fiber. The frame is heavy and its famous brands are GT, DIAMONDBACK, CANNONDALE and so on. The front fork of the frame is also very particular and can be divided into two categories: one is the high-position shock absorber fork commonly known as "high fork", and the other is the low-level shock absorber. The famous ones before the shock absorber are: ROCK SHOX, MOTO, MANITOU, RST....... Secondly, the size of the car, the sprocket, the transmission, etc., basically use the kit, and the XTR series produced by the Japanese SHIMANO factory is quite good. Because of the high speed of DH movement, most players use disc brakes with superior performance.
According to statistics, in recent years, some players in Europe and the United States have achieved the return of the DH movement, that is, the entire vehicle has abandoned the central suspension and fork suspension, due to the turbulence and the amazing speed on the mountain road. Together, they call it "ultimate downhill" --- "EDH"
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