The type of bicycle flywheel, the size of the bicycle flywheel, the size of the size, the size, the

Bicycle flywheel is divided into multi-stage flywheel and single-stage flywheel, multi-stage flywheel is based on single-stage flywheel, add several flywheel pieces, combine with the sprocket on the central shaft, form a variety of different transmission ratios, thus changing the speed of the bicycle.

The single-stage flywheel consists mainly of a coat.

It is composed of parts such as flat block and core, jack, jack spring, washer, wire block and steel ball. The working principle of its single-stage flywheel: when the pedal is stepped forward, the chain drives the flywheel to rotate forward, then the flywheel internal tooth and the jack are contained, and the rotating force of the flywheel is transmitted to the core through the jack, and the core drives the rear axle and the rear wheel to rotate, and the bicycle moves forward.

By assembly method; There are threaded types; Cassette; There is also a kind of dead flywheel, which is a piece of iron with teeth, which is generally used in cars such as beach cars;

According to the speed mode: there are variable speed multi-stage flywheels, multi-stage generally have 5, 6, 7, 8, 9, 10 pieces, and there are single-stage flywheels with constant speed;

There are two kinds of flywheels, single-speed and variable, the single-speed ones are generally used for ordinary bicycles, and the variable speed ones are used for mountain bikes and road bikes

The main stream of mountain cassette is divided into 3 8-speed, 9-speed, 10-speed, and now the mainstream of the competition level tends to be 10 speeds, and the competition level is divided into leisure and recreation and competition, and the size of the leisure is a little larger, and the competition is a little smaller.

There are two ways to install a single-speed flywheel and a multi-speed flywheel, one is to twist it in, and the other is to put the whole flywheel into the chicken head and then twist the lock ring.

The traditional size system is based on the measurement of the outside diameter of the tire, which is usually measured in inches (26)."，27"etc.), or in centimeters (650, 700, etc.).

1. The minimum number of flywheel teeth in the flywheel group of road car is 11; The maximum number of cassette teeth is mostly 23 or 25, and occasionally there are 27-tooth climbing wheels;

2. The minimum number of flywheel teeth in the flywheel group of mountain bike is 12; The maximum number of flywheel teeth is mostly 28.

3. If you ride a bicycle for a long time, you will find that when you choose the gear, you will have a feeling of laborious work in a higher gear and a lower gear in the air. So. Modern bicycles are mostly gear-shifters, which consist of a set of flywheels.

4. Generally speaking, the number of teeth of the minimum flywheel and the maximum flywheel of the flywheel group of different manufacturers are the same, but the limit case of using the minimum flywheel and the maximum flywheel is rare. The most used is the flywheel in the middle, and the arrangement of the number of flywheel teeth in the middle is very different according to the manufacturer's design focus on the car. The flywheel arrangement of racing cars tends to be small and medium-tooth flywheels, while the flywheel arrangement of mountain climbers tends to be medium-to-large number of teeth flywheels.

5. The same is from the 12-tooth and 28-tooth mountain bike flywheel group, and the 10-tooth flywheel group, there are 8 gears in the middle to choose from; For a 7-fly flywheel set, there are only 5 gears in the middle. Comparatively speaking, the more optional flywheels in the middle, the more you can choose from a wider range of gears, making it easier for you to find the gear that suits you better. Therefore, in the production car, 10 flying cars are much more expensive than 7 flying cars.

6. Of course, the team technician of the professional runner will order a lot of flywheels at one time, and combine the most suitable customized flywheel group with the least number of flywheels according to the race route and the habits of the riders. This minimizes the weight of the bike and ensures the rider's habit of shifting gears. Most of these flywheels are only 3 5 flights, but they are much more expensive than 10 flights.

The traditional size system is based on the measurement of the outside diameter of the tire, which is usually measured in inches (26)."，27"etc.), or in centimeters (650, 700, etc.).

Flywheel: Mounted on the rear end of the frame, the rear fork tail end, the right side of the axle outside the rear wheel set. There are different brands (such as Japan's SHIMANO, the United States' SRAM, Taiwan's Sunshine, the top three in terms of market share), and each brand has different speed levels such as 7-speed, 8-speed, 9-speed and 12-speed (with a few wheels).

<> crankset: Mounted at the bottom of the bottom bracket of the frame. The brand specifications are the same as above, but there are also differences. The crankset is composed of: the left crank, the bottom bracket, the right crank and the crank.

<> crankset, flywheel, chain, and the central axle of the frame bottom bracket (invisible from the outside) form the "transmission system"; Cooperate with them to complete the variable speed function: finger dial, front dial, rear dial and variable speed wire connected to each other to form a "variable speed system". Usually the above two parts are referred to as the "shift kit".

For example, the complete "middle suit" of Himano includes all of the above. (The "big set" includes the front and rear brakes).

"Sprocket" is a layman's term (if he says to a merchant that he wants to buy a "sprocket", he may be ignorant). Because the flywheel and crankset, including the two small wheels on the rear derailleur, are all chain-running, they can be called "sprockets".

The threads of the flywheel are different from metric (m35x1) and imperial (, and cannot be mixed.

2.Flywheel, chain, sprocket crank are the main transmission mechanism, after a period of use will produce a certain amount of wear. If you only change the flywheel and do not change the other two simple travel parts, it may be caused by the poor coordination between the three due to the different degrees of wear.

3.The flywheel of the electric bicycle is used at the bottom of the frequency in actual use, and in order to reduce the sound, most of them adopt silent treatment, so it is slightly inferior to the flywheel used for bicycles.

1. Take the holding (rising) brake on the rear wheel and the rear wheel under the stool, and lay the side with the brake on the wood (the flywheel side is on the top and the brake side is down). Note: Do not crush the motor wire.

2. Place the sharp punch on the hole in the flywheel cover and hit it to the left (counterclockwise) to knock the entire flywheel down.

3. If the whole flywheel can't be beaten, the flywheel will be disintegrated. Specific method: put the punch on the flywheel cover hole, hit it to the right (clockwise), remove the flywheel cover, and then take out marbles, gears, and jacks in turn.

Use a flat punch to hit the notch of the flywheel base, and hit it to the left (counterclockwise) to take out the flywheel base.

Install the new flywheel: touch the butter or engine oil in the gong pattern of the new flywheel, install it clockwise to the original flywheel position, and tighten it by hand (no need to use a hammer, install the rear wheel, and step on the foot with a few trips to tighten the pedal).

The types of bicycles are as follows:

1. Mountain bikes.

Mountain bikes are suitable for a wide range of complex road conditions. The body is strong, the control is flexible, the tires are wide, the passability is good, the speed can be variable, the tires are rough and the grip is good, suitable for off-roading, the overall strength of the mountain bike is larger, the impact resistance is strong, the riding is more comfortable, and it is not easy to be damaged when riding more than other bicycles, and it is also the most seen bicycle on the market.

2. Road bikes.

Road bikes are used on smooth road surfaces, such as bicycle sports cars, due to the low resistance of smooth roads, road bikes are designed to consider speed more, often using down-bend handlebars that can reduce wind resistance, narrower high-pressure and low-resistance tires, higher gears, and larger wheel diameters than ordinary mountaineering off-road vehicles.

3. Folding car.

Generally, the folding car is composed of frame folding joints and riser folding joints. By folding the frame and folding the front and rear wheels in half, the length can be reduced by about 45%. When folded, the vehicle can be folded into carry-on suitcases and folding bags, as well as in the trunk of the car.

Due to its small size, it is easy to get started, and there is no need to use external tools during the use of folding, and the car can be manually moved or folded by itself.

Bike buying tips.

Clause. First, the frame of the bicycle is one of the most critical positions, if you see the frame of the bicycle is not welded with some unevenness, then it means that the quality of the bicycle is not small, we still do not choose as well, the frame must be smooth welded to indicate that the technology is good.

Clause. Second, when we buy a bicycle, we should choose a bicycle according to the strength and characteristics of the material, which actually depends on the maturity of the welding process.