I m a 3 8 24 speed bike, what are the various gears used in?

On the flat road, use the front two, the back five, six and seven; When climbing, the back changes to a small number gear, and the rear speed changes to the second and third gears and feels that it is too hard to step on, and the front changes to the first gear; On the somewhat downhill section, if you need to accelerate, change the front to third gear, and the rear to six, seven, or eight gears.

The transmission is designed to allow us to use the same pedaling frequency and force to maintain a stable heart rate whether it is flat, uphill or downhill, so as to achieve the purpose of aerobic fitness. If you don't use a transmission and pedal hard uphill, your heart rate suddenly increases, and people with poor physical fitness are at risk of fainting.

The way to shift gears on a mountain bike is to shift the gear by moving the transmission on the left and right handlebars while riding, so that the transmission moves the chain to the chainring.

The most important thing in the gear shift process is to keep the pedaling spinning, and remember to light the foot force, because when the chain shifts, the strength will cause serious wear and tear on the drivetrain.

In addition, it is necessary to remember that the transmission should be shifted in the car, and do not shift after stopping, because it is easy to change gears when the car is not moving, and it will cause great damage to the transmission when it travels again.

(1) Flat road: the difference is not too big.

2) Uphill: The latter is more labor-saving.

The speed is a variable speed assembly consisting of a 3-piece crankset and an 8-piece flywheel. By switching between the crankset and the flywheel, there are 24 ways to change gears. It is also known as the 8-speed in the industry.

2、"How much speed"Refers to the shift ratio of the bike, the front ** is 3 discs corresponding to three gears, no change, and the rear is 6-9 rear cassette, corresponding to 6-9 gears. Multiply the front and rear to get an 18-27 speed. The 18-speed is the least fast and adjustable, and the 27-speed is the most fast and adjustable, as there is the most variety of speed variations.

It means a gearbox, and all the combinations add up to a total of 24 types. The left hand can control the 3 gears on the front end of the chain, and the right hand can control the 8 or 9 gears on the rear wheel.

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.

24 gears = 3x8, that is, there are three shifters in the front and 8 shifters in the back, which together have 24 gears.

Answer: 24-speed is more practical.

First of all, the 8-speed and 24-speed are both commonly used bicycle shifts, but the 24-speed is more practical than the 8-speed. During riding, different road conditions and slopes require different gears to adapt.

The 24-speed transmission system can provide more gear options, which can adjust the riding resistance and speed more precisely, and is more suitable for different road conditions and needs. In addition, the 24-speed shifting system is more convenient when climbing hills, providing more low-speed gears to make it easier for riders to tackle steep grades. The 8-speed shifting system is suitable for riding on flat roads or on slight uphill slopes, which is not practical for cyclists who need to climb hard in difficult road conditions.

Expansion: In addition to the number of gear failures, there are other differences in the shifting system of the bike, such as the number and size of the external and internal chainrings. In general, the larger the external chainring, the faster the speed, but more force is required to propel the bike.

The internal chainring, on the other hand, is smaller and easier to climb, but the speed is affected. When buying a bike, you need to choose the right transmission system for your individual needs.

Choosing the speed of a bicycle needs to take into account different situations and needs. Generally speaking, the more speed a bike has, the more road conditions and demands it can adapt to.

If you're riding your bike mostly on flat surfaces, an 8-speed bike is more than enough for everyday riding, and it's relatively easier to use and cheaper than a 24-speed bike.

But if you often need to ride on mountain roads or in difficult conditions, a 24-speed mill bike is more practical. The 24-speed bike can flexibly adjust the gear ratio according to the road conditions and needs, making the ride easier and more comfortable. At the same time, the 24-speed bike is also more suitable for high-intensity sports such as long-distance cycling and competitive cycling.

Therefore, the choice of bicycle speed needs to be decided according to your actual travel needs and riding conditions.

The 24-speed and 27-speed are the difference between the speeds, but there are also differences in other configurations that are generally different in terms of speed.

Speed difference refers to the number of different speed ratios between the front crankset and the rear flywheel of a bicycle. For example, if the front crankset of a mountain bike is 3 pieces and the rear cassette is a plate, then the ratio is 3 7 = 21 speeds, 3 8 = 24 speeds, 3 9 = 27 speeds and 3 10 = 30 speeds.

Some brief introductions about speed farewell are as follows:

1. The main difference between different speeds is the right dial (the finger dial that controls the rear transmission), the flywheel, the chain, the rear derailleur, and the rear hub (tower base).

2. The higher the speed, the more gears are dialed with the right finger, the more the number of flywheels, the thickness of each flywheel will be thinner, the gap will be smaller, and the chain will be thinner.

3. Speed = number of crankset teeth * number of flywheel teeth. For example, the front gear is 3 pieces, and the rear cassette is 7 pieces, then: 3 * 7 = 21 speed, this car is a 21-speed transmission car.

4. For the transmission car, when the chain is put to the smallest piece of the front gear and the largest piece of the rear flywheel, it is the most labor-saving, but it will take a circle to step on n laps, and this way is used when going uphill; On the contrary, on the flat ground, put the chain to the largest piece of the front gear and the smallest piece of the rear flywheel, which is the fastest to ride, but it is laborious.

Mine is the Giant Highway, the physical store enters, it is recommended to go to the physical store.

1000 yuan up and down ** good expensive go to the physical store a few speeds for you basically do not need I ride a bicycle can only use 3 gears The rest are decorations.

**Not very reliable or go to the store, maintenance is also convenient, the car is divided into 3 7 21 speed and 3 8 24 speed and 27 speed.

Refers to the shift because the front is a third gear, if the rear is 8th gear, it is 24 speeds, if it is 9 gears, it is 27 speeds, I personally recommend buying 27 The higher the comparison gear, the higher the requirements for technology and materials, and the lower the failure rate.

It's not a big difference, but it's recommended to buy it in a physical store.

Online shopping is unreliable, forget it, you are scared, it is recommended to go to a physical store.

Mountain bikes are all gear-shifted, with 24-speed means that there are three chainrings in the front and eight cassettes in the back.

The advantage of shifting is that the front and rear gear ratios can be adjusted freely, and the riding will be more comfortable and efficient with a small gear for uphill and large gears for flat roads or downhills.

Show you my flywheel.

The front crankset has 3 ring teeth.

The rear flywheel has 8 teeth.

In this way, the first three and the last eight can be matched with 24 speeds.

This question is a bit naïve. Oh, I don't mean anything else. That's right, the 21-speed is the front three flower plates, the rear is seven, the 24-speed, the 27-speed are three in the front, and the back is eight and nine.