What does Bicycle 26 21 speed mean?

A bicycle (racing) is defined as "a road bike, which is defined as a bicycle that uses 700c wheels and a dedicated lightweight frame with dedicated bend handlebars."

26-inch refers to the size of the wheelset is 26 inches. It's regular bikes and mountain bikes.

Commonly used sizes for wheels.

21 speed refers to the bicycle's shifting system, which adopts a 3-piece crankset and a 7-piece flywheel. This kind of front 3 and rear 7 shifting mechanism is usually used by mountain bikes or station wagons.

Adopt. To sum up, the bicycle (racing) 26-inch 21-speed means 26-inch 21-speed mountain bike, or a 26-inch 21-speed mountain bike with a curved handlebar.

Mountain biking.

26-inch 21-speed dual disc brakes.

These data indicate the basic configuration of a car. 26 inches: The size of the wheel, that is, the diameter of the rim is 26 inches, 1 inch = cm.

21-speed: that is, the vehicle adopts a 21-speed transmission system, that is, the crankset has three gears, and the flywheel has seven gears. Double disc brake: that is, the front and rear wheels are all disc brakes, which are different from V-brakes.

26-inch refers to the size of the wheelset is 26 inches. It is a common size for regular bicycles and mountain wheels.

21-speed refers to the bicycle's transmission system, which uses a 3-piece crankset and a 7-piece cassette.

The bi in English bicycle or bike means two, and cycle means wheel. In Japan, it is called "self-car"; In Chinese mainland, Hong Kong, Macau, Taiwan, Singapore, it is usually called "bicycle" or "bicycle"; In Hong Kong and Macau, it is often referred to as a "bicycle". It was first invented by Drèss (1785-1851), a forester in Germany.

There are single bikes, as well as tandem or multi-person bikes.

It can be used as an environmentally friendly means of transportation for transportation and travel; More and more people use bicycles as fitness equipment for cycling exercise and bicycle travel; Cycling itself is also a competitive sport, there are road cycling, mountain biking, track cycling, stunt cycling, etc.

Speed difference refers to the number of different gear ratios that are matched with the front and rear gears, that is, for exampleMountain bikesThe front crankset is usually 3 pieces, and the rear flywheel can be a piece, so the speed ratio can be 3 7 = 21 speeds, 3 8 = 24 speeds and 3 9 = 27 speeds.

If it's just 21 speeds, it's enough, 24 speeds and 27 speeds will be a lot more expensive, there is not much difference between the two gears, the front 3 gears are matched with the 7 gears of the rear flywheel, a total of 21 gears.

Bicycles, also known as bicycles or bicycles, are usually small land vehicles with two wheels. After people ride on the car, they are powered by pedals, which is a green and environmentally friendly means of transportation.

English bicycle. where bi means two, and cycle means wheel, i.e., two-wheeled vehicle.

In Chinese mainland, Taiwan, Singapore, it is commonly called"Bicycles"or"Rushing to the bicycle";In Hong Kong and Macau, it is commonly called"Bikes"(Actually, in Cantonese.)

That's what it's usually called); And in Japan it is called"Self-sufficiency *** car"。There are many types of bicycles, including single-person bicycles, tandem bicycles, and multi-person bicycles.

It can be used as an environmentally friendly means of transportation for transportation and travel; More and more people use bicycles as fitness equipment for cycling exercise and bicycle travel; Cycling itself is also a competitive sport, with road cycling.

Mountain bike races, track bike races, stunt bike races, etc.

As of 2019, the number of bicycles and electric bicycles in China has reached nearly 400 million.

Nearly 300 million vehicles, ranking first in the world.

Refers to a variable speed bike.

Transmission bicycles are divided into two parts: front and rear shifts, the front shifters are generally 3 cranksets, and the rear shifters are 6 to 10 21 speeds are the front 3 and rear 7, 24 speeds are the front 3 and rear 8, and 27 speeds are the front 3 and rear 9.

Bicycle shifting system.

The function is to change the speed of the car by changing the cooperation 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.

No, although they are both 21-speed, mountain bikes have smaller tooth pals than road bikes, and the flywheel is larger than road bikes, even though mountain bikes and road bikes pedal as often as they are ridden, while road bikes are much faster than mountain bikes.

Even if the gear ratio is the same and the cadence is the same, the speed should not be the same.

One is because the rough resistance of mountain bike tires is large, and the other is because the tire diameters of the two cars are different.

Hello, for your query of the following information, all the answers will be sent to you one by one, please be patient, do not close the conversation, thank you for your cooperation. The bike's 21-speed refers to its shifting rating. It can be shifted in 21 levels, with three gears on the big wheels in the front and seven gears on the small wheels in the rear.

The combination of these two people is followed by a shift adjustment, and there are twenty-one combinations. That is, each large wheel in the front drives the rear wheelset in 7 shifting schemes. In this way, the first three sets of big wheels can be combined into 21 speed modes.

How to use a 21-speed gearbox:

1. Low speed gear: suitable for starting, headwind, and climbing. When using, choose the smallest crankset with the largest 3-piece flywheel, and avoid that the smallest crankset cannot be used with the smallest 4-piece flywheel, which will reduce the life of the chain, crankset and flywheel.

2. Normal riding gear: suitable for daily use on the middle and flat roads. When using, choose the crankset in the middle position to use with the 3-piece flywheel in the middle, and avoid that the crankset in the middle position cannot be used with the smallest 2-piece flywheel and the largest 2-piece flywheel, which will reduce the service life of the leather shed chain, crankset and flywheel.

3. High-speed gear, suitable for downwind and downhill use: choose the largest crankset to use with the smallest 3-piece flywheel, and avoid that the largest crankset cannot be used with the largest 4-piece flywheel, which will reduce the service life of the chain, crankset and flywheel.