As for how to debug:
1. The height of the cushion is the most important part of bicycle setting, especially related to knee injury and pedaling output. If the cushion is too high, the knee will be easily injured, and if the center of gravity is too high, accidents will easily occur; If it is too low, you can't step on the strength. If you step on it in an incorrect posture for a long time, it will also have a bad influence on your knees and legs. Setting the height of the cushion For beginners, just put the "heel" on the pedal first, then step on it a few times, and slowly adjust the height of the cushion until the knee is just straightened when stepping to the lowest point. At this time, the height of the cushion is already close! According to this standard cushion height, put the "sole" back to the original standard pedaling position (that is, the crank is horizontal to the ground), so that the knee will naturally bend a little when pedaling at the lowest point (at this time, your calf should be vertical to the ground, or your foot is directly below the knee, which can be achieved by adjusting the front and rear position of the cushion). This stretching posture can not only take into account the output of pedaling, but also prevent the knee from being injured when pedaling again. Of course, if the novice can't get used to such a high riding position at once, he can also lower the "standard cushion height" by one or two centimeters, or even three or four centimeters, which is still within the acceptable range.
When setting the height of the seat cushion, it is forbidden to pull the seat cushion too high (many middle school students like to be cool on the road, deliberately pulling the seat cushion very high and pretending that their feet are long). Such a height of the seat cushion will make the knees straight when stepping on it, which is a very dangerous action! Like cycling, legs need to be pedaled and rotated frequently. At this time, if the knee is straightened, it will not only make the pedaling happen, but also affect the continuity of pedaling, and the knee will also hurt the knee joint and leg ligament when it is straightened. Although there is an illusion that the pedaling force will be "straight out" after the seat cushion is pulled up, it seems that it is necessary to step out in this posture, but in fact, it is not the case that both muscles and knees are easily worn and injured at this time (knees are straight). So remember one thing! It is forbidden to keep your knees straight when riding a bicycle.
The height of the cushion should not be too low. Generally, beginners tend to pull down the height and pull it too much because they are not used to riding with a high center of gravity. This "squat riding" posture will make the strength of the legs unable to stretch. Although they feel at ease when riding (because the center of gravity is low and the soles of their feet can step on the ground), the thighs, calves and knees that cannot stretch will not only make you uncomfortable to ride, but also easily cause muscles for a long time.
Therefore, we suggest to find out your "standard cushion height" first, then lower it a few centimeters, get used to the change of the center of gravity, and then adjust it up bit by bit (half a centimeter or one centimeter) until you find a good position that can make you feel at ease and confident, take into account your pedaling efforts and avoid physical injury.
2. Cushion angle:
First, adjust the simplest cushion angle. The angle of the cushion should be kept generally horizontal. Because the cushion surface of the cushion on the market at present is mostly curved, it may not be accurate by visual inspection, so you can put a long ruler on the cushion first, and then visually grasp the level with your eyes, which is much easier.
But the angle of the cushion is by no means rigid. For example, some people often complain about crotch pain after riding a bike, which may be caused by excessive pressure on the front end of the seat cushion. This is because the nose end of the seat cushion can be slightly adjusted downward, which can reduce the pressure on the crotch, especially when going uphill. On the contrary, some people don't ride uphill for a long time, but they like the pleasure of rushing down. When going downhill, riders often move around behind the seat cushion because of the control of the center of gravity. At this time, it is best to tilt the nose of the seat cushion up a few degrees and lower the height of the seat tube, which will help the body to be flexible on the seat cushion when going downhill. 3. The height of the faucet:
The height of the faucet is mainly to adjust the weight. When riding normally, we should evenly distribute the body weight on the "golden triangle" of cycling: the handlebar, the cushion and the pedal. People who don't often ride a bike or have no habit of riding a bike, because they are not good at using the muscles of the upper body and don't often move to the waist, will unconsciously make the position of the faucet handle high and close (close to the body), so that the riding posture is like the usual sitting posture. . However, it seems that the natural posture of technology will actually make the weight of the body too concentrated on the "cushion", while the weight assigned to the "handle" is only a point. Although this setting can feel very natural and comfortable at first, but most of the body weight is pressed on the buttocks (cushion), after riding for a long time, the buttocks will be uncomfortable because of excessive pressure (this may be the reason why you feel the cushion is hard), and the parts you step down are also prone to numbness. In addition, riding too upright like this will make the rider's spine directly face the impact from the ground, which will cause backache after a long time, which is actually very bad for the body in the long run. Therefore, when setting the height and length of the faucet, don't blindly want to raise and shorten the faucet; On the contrary, set the faucet in a proper position so that the weight of the body can be distributed to the handle (that is, the muscles of the upper body and arms). Although at first you will feel weak and tired easily because of the relationship that the muscles here are rarely used at ordinary times, the feeling of pain and discomfort will naturally disappear after riding a car once or twice and waiting for the muscles to get used to such use and intensity. Therefore, when setting the length and height of the faucet, we must remember the "riding golden triangle 333 counterweight principle".
the length of the faucet will change with the length of the tube on the car. Because the length of the upper pipe of each car is different, the length of the faucet is not a fixed number. If the faucet is too short, the weight is not easy to press on the front wheel, and it is easy to feel a little light when riding. When going uphill, the front wheel is also easy to float, causing danger or disrupting the rhythm, and the strength of the upper body will also be unable to be displayed. On the contrary, if the faucet is too long, it will put too much weight on the front wheel, which will not only hinder the control, but also cause the center of gravity to be too front when going downhill, and the load of the rear wheel is not easy to float or lead to insufficient grip, which will greatly reduce the riding safety, and the upper body will also increase the sense of fatigue. Therefore, choosing an appropriate faucet length is often the most important part of new car setting, but it is also the setting that stores are most difficult (or unwilling) to adjust and consumers are least likely to feel the effect immediately.
4. Angle of brake handle:
Before riding a bike, you must learn to stop, that is, brake. This is the first step in safe riding. Of course, the angle of brake handle also plays a key role.
Generally, the brake handle can be set at 35-45 degrees first, so that when riding, the back of the hand and the forearm can be leveled. If the angle between the back of the hand and the forearm bends up or down too much, it means that the angle of the handle is wrong and needs to be readjusted.
The correct angle of the brake handle can make the muscles of the arm and palm feel most comfortable, and can apply force and react most quickly. Remember, stopping the car, that is, braking, is the first step to riding a bicycle safely. One thing is to put the brake handle in the best, most right and most natural position, so as to minimize the chance of danger in case of accident.
5. Position of the brake handle:
It is not enough that the angle of the brake handle is right, but whether the finger can control the handle correctly is also the key. Nowadays, bicycle parts are mostly based on the size of Europeans and Americans, so for orientals, The size is often one size larger, which makes people "refer to Moji". Fortunately, after years of evolution, most of the current brake handles have a wide adjustment space. Therefore, as long as the owner of the store is asked to adjust the position of the brake handle according to the size of your palm and the length of your fingers, basically the second section of the index finger and middle finger should be firmly placed on the brake handle to pass, so that when there is real danger, the response time and strength of the brake are fast and strong enough.
especially female friends with small palms must pay special attention to this! Don't take your little palm fingers to give way to the big handle designed for western men. In fact, with a little adjustment, the car can become a part of your body.
6, handlebar width:
The handlebar width is probably wider than the shoulder, at least as wide as the shoulder, so that the control room will be smart and powerful, and the chest muscles will naturally stretch and you can breathe smoothly. Too narrow handlebar width will get in the way when turning, which will not only affect the handling but also be dangerous, and it is also impossible to breathe deeply.
However, an excessively wide handlebar is not wide enough. It will be like driving a tractor (truck), and the upper body will easily lean forward too much, which will only increase strength and burden on the waist.
I believe that after the above adjustments (although it will be a bit troublesome, it is necessary once and for all), your car will become a part of your body! Of course, I won't be hit by the cushion ~ ~
Well, I've been playing all morning, and I'm almost exhausted. I hope it will be adopted. If you think it's useful, just give it to me
(if you don't understand anything, you can MI me)