The one who understands the bicycle enters! I understand the progress of mountain biking

Updated on physical education 2024-06-23
23 answers
  1. Anonymous users2024-02-12

    If you want to install a basket, there are two ways for your car to be installed, and both have to be installed in the back.

    The first is to tie a frame to the rear shelf, which may affect the use of the rear shelf, but it can bear weight.

    The second type is a folding basket that is installed on the left side of the back. Get a place to fix a bicycle or buy a bicycle and pick a suitable one.

    I recommend the second option, which doesn't affect the aesthetics and is more practical. However, the basket must not jump too much, otherwise it will affect the riding when it is opened.

    It may be a little difficult to put the basket on the car, and those who repair the car may not be willing to do it, so it is recommended to find one who is patient.

  2. Anonymous users2024-02-11

    It is sure that you can find a way to install it, and you can also find a way to install it if the installation method of ordinary baskets is not suitable.

    But basically the ** will affect some folding. Unless it is mounted on the right rear, but it also affects the carrying after folding.

    What do you want to do with a basket, don't you have to tie the schoolbag to the back shelf, can you still carry people in such a short car? So how short is that guy?

  3. Anonymous users2024-02-10

    Hello!! It's a pity!! I advise you to listen to the store's advice not to pretend, you imagine carefully, if you buy more of his box, will he be happy to make money??

    That's because these two cars were not designed with frames in mind!! There may be unsafe factors in adding a box, so I advise you not to put a frame, but I suggest that you can add a small box similar to the back of the moped in the back of the car, which is more convenient, thank you!!

  4. Anonymous users2024-02-09

    It doesn't have much effect, although I don't understand but my brother's car is a shifter, he puts the basket in the back, I see that he rides faster than anyone else, LZ or buy a diagonal bag, it looks handsome.

  5. Anonymous users2024-02-08

    Then you just find a movable basket, when you want to use it on the side of the rear frame of the trailer, and then with a small lock, when you want to do it temporarily, lock the basket and frame, if you put it for a long time, just take it away I hope it will inspire you

  6. Anonymous users2024-02-07

    I can have a blue, the same safe basket, it doesn't affect the truth, I don't lie to you, I ride every day to ensure that it's okay, and it doesn't affect it to the front. It's okay.

  7. Anonymous users2024-02-06

    You can load a basket, but what does this have to do with speed? It's not that the boss is afraid that you will ask him to give you a basket, so he said that he can't be safe.

  8. Anonymous users2024-02-05

    Yes, just put it in the back, if the speed regulation will not look good, you choose.

  9. Anonymous users2024-02-04

    Seeing that you don't know much about bicycles, let me tell you!

    The function of the bicycle transmission system is to change the speed of the bicycle by changing the coordination of the chain and the gear discs of different front and rear sizes. The size of the front chainring and the size of the rear chainring determine how hard the bike rotates the pedals. The larger the front chainring, the smaller the rear chainring, and the more laborious it is when pedaling.

    The smaller the front chainring and the larger the rear chainring, the more relaxed it is when pedaling. Depending on the rider's ability, the bike can be adjusted by adjusting the size of the front and rear chainrings, or to cope with different road sections and road conditions.

    There are 18, 21, 24, 27 and so on, and the number of bicycles is usually more expensive and more suitable for a variety of road conditions. Bicycle shifting system.

    In general, the so-called several stages of bicycle transmission refers to the number of front ** teeth x the number of rear flywheel teeth', and the mountain bike is usually the front 3** and the rear cassette.

    Six, seven, eight, and nine speeds, multiply it to a variable speed.

    The role of the transmission.

    The bicycle's transmission has a combined speed of 27 for the front 3 cranksets and 9 rear cranks. Here is an example of a mountain bike. Bicycle shifting system.

    When the pedals are rotated, the front chainring rotates, and the force is transferred to the rear chainring via the chain, and the wheel advances. The size of the front chainring (number of teeth) and the size of the rear chainring (number of teeth) determine the force with which the pedals are rotated. The larger the front chainring, the smaller the rear chainring, and the more laborious it is when pedaling (the distance the bike travels becomes longer).

    The smaller the front chainring, the larger the rear chainring, and the easier it is when pedaling (the distance the bike travels shorter). The riding of a bicycle is to start, stop, go uphill, downhill, windward, downwind, etc. To be able to maintain a certain speed under any condition (whether the bicycle is moving fast or slowly, it can maintain a certain pedaling pace and torque, and the transmission is required.

    If you don't push harder, just increase the gear ratio to ride fast, that's not possible. I quickly discovered this during the actual ride. When you ride with a high gear ratio (high torque, low rotation), you will not be able to ride optimally (the combination of torque and rotation that emits the most appropriate energy).

    This will increase the burden on the knee and become a cause of various obstacles. (Note: It's best to move forward at a constant speed when riding, and fast and slow down is a torture for your knees.)

    If the time is short, you don't care much, and after a long time, there will be various problems).

    Bicycle maintenance skills - adjustment and use of bicycle transmission.

  10. Anonymous users2024-02-03

    If you ride most of the time on flat ground and don't climb, it is enough to use a 21-speed one, because the shifting is to better adapt to a variety of different slopes, and more speed ratios can accommodate more slopes, and if you don't climb, it is useless to change so many speeds.

    In fact, you don't need the physique of an athlete to pedal a mountain bike, change a lighter gear, pedal a little faster, you can speed without much effort, and this riding style can also protect your knees and the chain of the mountain bike.

    The following post is a mountain bike riding method, you can try to practice, maybe it will help you, happy riding!

  11. Anonymous users2024-02-02

    There are 18, 21, 24, 27 and so on, and the number of bicycles is usually more expensive and more suitable for a variety of road conditions. Bicycle shifting system.

    In general, the so-called several stages of bicycle transmission refers to the number of front ** teeth x the number of rear flywheel teeth', and the mountain bike is usually the front 3** and the rear cassette.

    Six, seven, eight, and nine speeds, multiply it to a variable speed.

  12. Anonymous users2024-02-01

    No, no, no, you misunderstood. If you want to ride fast, you still have to look at the pedaling force of your feet, not the xx speed, don't be confused with the x kilometers and hours of the car. xx speed is the product of the number of cranksets (the larger gears in front) multiplied by the number of flywheels (smaller gears connected to the rear wheels).

    Front 3 * Rear 7 = 21 speeds.

  13. Anonymous users2024-01-31

    Just a road race in the city.

  14. Anonymous users2024-01-30

    It's not redundant, you can just ride it, buy a good one, and when you want to upgrade, don't be so troublesome.

  15. Anonymous users2024-01-29

    It mainly depends on where you usually ride, and in the city, 21 speed is enough.

  16. Anonymous users2024-01-28

    If you're not going to overhaul it, I'll give you an easy way to do it.

    It's not impossible to remove the chain and put it in the Coke bottle, but then either the rear axle will be removed, or the chain will have to be cut off, which is very troublesome. It is not recommended to clean with dish soap when cleaning, because the chain, gear, crankset, and flywheel are things with a complex structure, and it is not easy to dry if water enters the bearing joint surface or dead corner, and it may rust when it dries naturally. It is best to clean with oil, and it is good to use relatively dilute solvent oils, such as turpentine and gasoline and paint thinners.

    It is highly recommended to use turpentine because gasoline and benzene are more harmful to people, while turpentine is used for oil painting and is less harmful to people. Generally, turpentine is sold in art supply stores, and it is not expensive.

    If it is not very dirty, add turpentine to the flywheel chain, and then use a brush to brush off the grease, and the more stubborn grease can be solved by brushing it a few times. If the chain is too dirty to rotate flexibly, then the only way to do this is to cut off the chain and soak it in oil.

    After cleaning, remember to lubricate the oil again, the turpentine is too thin to have a lubricating effect.

  17. Anonymous users2024-01-27

    Mix with water with a neutral detergent (e.g. meal wash, laundry detergent, etc.) and scrub with a stiff brush.

    Do not use a high-pressure water gun to rinse the mountain bike, many of the bearings or lubrication parts of the mountain bike are not sealed enough, and the high-pressure water gun will squeeze out the grease in these locations and accelerate wear.

    Happy riding!

  18. Anonymous users2024-01-26

    WD-40 plus brush and dust-free cloth. Brushes, teething trays and flywheels, dust-free cloth brush chains. Just go to the chain oil at the end of the line.

  19. Anonymous users2024-01-25

    Put the chain in a useless Coke bottle.

    Add water, laundry detergent, tighten the cap...

    Shake wildly for 10 minutes...

  20. Anonymous users2024-01-24

    First of all, the balance return speed should be stable, not too slow. Then move your weight back and downwards by bending down as much as possible and moving your hips back. This is the pre-preparation, and the main event should be slightly upright when you look up at the back (note:

    Don't change the center of gravity), then ask the hood to brake slightly, and finally put your feet on the pedals and lift the handlebars towards you (note: not vertically up). OK, that's it.

  21. Anonymous users2024-01-23

    The part of the rear tire that touches the ground is that the lead movement trend is backwards, and the Sakura static friction he receives is forward.

    At the same time, there is a small backward rolling friction.

  22. Anonymous users2024-01-22

    The lower the car, the more stable it is, and if you change the center of gravity, you have to be trained.

  23. Anonymous users2024-01-21

    Does practice make perfect? Just practice often.

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