How to choose the size of the bicycle frame?

Everyone's body length, foot length, and hand length are different. However, most of today's frame can be adjusted by adjusting the seat front and rear, height, and the distance of the handlebars, and make slight adjustments to match your most suitable riding posture. Choose the correct size based on your height, and then “fine-tune” the seat or faucet and handle to suit the length of your hands and feet. Choose an unsuitable frame, and then “replace” the seat or faucet and handle to suit the individual. The height and the length of the hands and feet are the last one. It is wrong for some people to choose a frame based on the length of their feet. For example, if a person with 180cm legs has short legs and a foot length of 75cm, he would choose a 16-inch frame according to that statement. But the legs are short relative to the body and must be longer. If it fits his feet, it can't fit his upper body. There is no way to fine-tune it. Therefore, you must choose the right frame based on your height to have room for fine-tuning.

　　 For a bicycle with a 26-inch wheel diameter, a height of 180cm is the most suitable size for a standpipe of 18 inches. It is true that 170cm is 17 inches, and of course 160cm is 16 inches! For heights of 150-160, you can choose a frame of 14-15.5 inches. If you are taller than 180, it is recommended to try your friend's 18 to 21-inch frame in person (due to the same wheel diameter, the size of the frame under 160 and over 180 will start to deviate).

700c frame wheel diameter road bike: top tube length 49 (+-0.5cm) is suitable for riders with a height of 155 (+-5cm); top tube length 50 (+-0.5cm) is suitable for a height of 160 (+-5cm); The upper tube length 51 (+-0.5cm) is suitable for the height 165 (+-5cm); the upper tube length 52 (+-0.5cm) is suitable for the height 170 (+-5cm) the upper tube length 53 (+-0. 5cm) is suitable for the height 175 (+-5cm); the upper tube length 54 (+-0.5cm) is suitable for the height of 180 (+-5cm). The above is the general recommended value. For those with short body and long legs, try not to exceed the recommended value.

The frame is the most important backbone of the bicycle. Choose the right frame and ride in color (it will be fine if you want to change anything in the future); if you choose the wrong frame, the ride will become black and white (it’s useless to adjust anything now—— In the future, the first one I want to replace the most is the frame). But because generally finished cars are produced in a standardized fixed size (most of the same models are produced in a size of two inches per interval). Some models only have 16 – 18 – 20, and some models have 15 – 17 – 19 size frames, just like S – M – L for clothes. And some are of foreign sizes (some frames are based on XS "156-165cm"-S "166-175cm"-M "176-185cm"-L "above 186cm").

　　 The mass production size of the road frame varies according to the make and model. Generally, it is expressed in the length of the riser in cm or mm (the length of the riser c-t is divided by 2.54 to convert to the inch frame size). If the frame is marked as 450, it means that it is calculated in mm (millimeters). Divide by 2.54=177, which is 17.7 inches. Suitable for people around 177cm. If it is marked as 45, it means that it is calculated in cm (centimeters). Divide by 2.54=17.7, which is a 17.7-inch frame. The meaning is the same, except that the unit of the marking method is different.

　　Mountain bike frame mass production size varies according to the make and model, generally expressed in inches. Every 0.5 is a size (there is also a metric size indication). For example, 14 -14.5 -15 -15.5 -16 -16.5 -17 -17.5 -18 -18.5 -19 -19.5 -20 -21, etc., within the allowable range, test rides according to personal proportions, and choose the easiest rider good. Choose the right frame, and then adjust the seat, handle or faucet if there is any discomfort to achieve the best riding ratio. Moreover, in the midst of the wave of lightening, choosing an excessively large frame size will vainly increase the weight of the frame and reduce the handling flexibility, which is not a wise choice.

In addition, the mountain bike depends on the subjective comfort of the individual riding, and the horizontal angle of the high-span or low-span “upper tube” (connected to the head tube under the seatpost) can be considered, so that the rider will not touch the ground when the rider stops. As for letting the frame get stuck under the cross, don't deliberately choose a high-span frame that is too small to cater for the lack of leg length. Generally women and those with shorter crotch length are more suitable for low-span points (posture and aesthetic issues). Choose the frame size that best suits your height and take into account the foot length. Choose a frame with a high or low top tube span, so that you can achieve the ultimate goal of "tailor-made".

Do you feel uncomfortable riding a bicycle? Don't believe that you will get used to it for a long time. It's just that your patience is good, but it's not suitable or not suitable. Hear me a word: People who have never ridden a car with the right size will have no pain unless they exercise too much. In addition, there is one thing that is most likely to happen to beginners, that is, you don’t know how to choose a frame, and you go to the car dealer to see which model you like, and after you choose a model, ask the boss how you are suitable The problem arises at this time: Most of them want to clear the inventory, such as your height 174, and there is a 19-inch frame car in his shop, or a 15-inch car, he will also tell you It's okay, just right, etc.

Mountain bikes are based on the subjective comfort of individual riding. In addition, the horizontal angle of the “upper tube” (connected to the head tube under the seatpost) of the high-span point or low-span point can be considered, so that the foot will not be allowed to fall on the ground when the rider stops. Straddle down to the frame, and don't deliberately choose a high-span frame that is too small to cater for the lack of leg length. Generally women and those with shorter crotch length are more suitable for low-span points (posture and aesthetic issues). Choose the frame size that best suits your height and take into account the foot length. Choose a frame with a high or low top tube span, so that you can achieve the ultimate goal of "tailor-made".

If you like this kind of car, but you don't have a frame that just fits you, then you must choose the frame size that is closest to the appropriate size to suit your height, so you have to choose the allowable error range size. Take 170cm as an example, the most suitable is a 17-inch frame (acceptable within 16.5-17.5 inches)-based on the size corresponding to your height, +0.5 or -0.5 inches are the most suitable for you Frame range. Because of the different types, functions, and postures of the riding bikes, the allowable range of some road bikes can be increased by 0.5 inches, while the allowable range of mountain bikes can be adjusted by 0.5 inches. If you choose a road bike, the size can be increased by up to 0.5 inches, which means that 170cm people can choose a frame of 16.5-18 inches. Because the upper body posture of the road bike is more forward-leaning and the upper tube of the frame is higher (the seat tube size will be larger when measured), in order to accommodate the extendable space of the upper body and the high-speed driving characteristics of the road bike, it can be increased when selecting 0.5 inch (after the test ride according to the body ratio, subjective comfort shall prevail). If you choose a mountain bike, the size can be reduced by up to 0.5 inches. For example, 170cm people can choose a frame of 16-17.5 inches. Because the mountain bike focuses on flexibility and the upper body posture is straight, it can shorten the space for the upper body to extend forward. , And the frame is smaller and more flexible to meet the running and jumping functionality of mountain bikes. Based on this data selection, everyone will have several frame sizes within the allowable range, and the recommendation in the selection is: closest size>smaller size>slightly larger size. One size smaller frame can’t be fully ergonomic at best, but it’s easy to ride; a larger frame will cause pain in your neck, shoulders, waist, back, arms, wrists, buttocks, etc., making you want to change Car, don't be careless

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