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Back-type bicycle frame: The metal hook is connected with the sheet metal gap of the rear tailgate, which generally does not affect the opening of the rear tailgate. The advantage is that compared with the overhead bicycle frame, it is more convenient to take and place the bicycle. The disadvantage is that the metal hook that plays a fixed role will more or less affect the body sheet metal. Sometimes the bicycle hanging in the air may block the vehicle number plate. There are many kinds of products of this kind, No brand has the most obvious advantages.
Because the bicycle is driven by the driving force and riding skills of the human body, the frame becomes an important structure to bear the impact load generated by the bicycle during driving and whether it can carry the human body comfortably and safely. The manufacturing accuracy of the frame components will directly affect the safety, stability, and lightness of riding. Generally speaking, the spokes are of equal diameter. In order to reduce the gravity, they are also made into variable-diameter spokes with large ends and small middle, and they are also made into flat streamline spokes to reduce the air resistance.
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Ningbo Yinzhou Hishen Hardware Co., Ltd.