Bicycle styles generally consist of two Chinese phonetic letters and a set of Arabic numerals. Such as PA 18 or QF65. The first letter stands for the type of car: P stands for ordinary car, Q stands for light car, Z stands for heavy car, S stands for racing car and X stands for BMX. The second letter is to distinguish between male and female cars: generally, A, C and E stand for male cars, while B, D and F stand for female cars.
The number behind is the manufacturer's production serial number. PA 18, which was listed before, is an ordinary 28-inch male car with serial number 18, and QF65 is a portable 26-inch female car with serial number 65.
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Precautions:
1, keep your posture straight and relax. When riding a bicycle, usually the upper body should lean forward slightly, the arms should be straight, the eyes should be straight and the attention should be concentrated. When pedaling, use force on the forefoot to keep your body balanced and not shake. Lean forward when encountering uphill headwinds; When going downhill or downwind, stand upright and pay attention to downhill safety. At the same time, breathing should be coordinated with the vehicle speed, and abdominal breathing and nasal breathing should be used as much as possible.
2. The stress should be balanced. When riding, your hips should sit up straight and your legs should be balanced to prevent one side from overexertion. When pedaling, try to ensure that your knees are not completely straight, so as not to shift your focus to your crotch and cause physical injury.
3, the seat should be suitable If the bicycle seat is too high, it will not only make the body uncomfortable and uncoordinated when riding, but also make the perineum and the seat constantly rub because the rider can barely get up and down. A comfortable seat position should be horizontal or slightly inclined downward. If the seat is tilted up, even the best material will compress the hip artery. In addition, choose those wider car seats.
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