Hydraulic mechanisms (brakes, shock absorbers...) generally hydraulic brakes and shock absorbers are easy to air, which will greatly reduce the effect of bicycles.

There are many kinds of bicycles. Different bicycles and different rider qualities determine the speed of bicycles. Common bicycles in life, such as sports bicycles, belong to leisure bicycles.

Among the 25 components of bicycle frame, tire, pedal, brake and chain, the basic components are indispensable. Among them, the frame is the skeleton of the bicycle

The bicycle hub is the name of the mountain bike part; it is named after the shape of the musical instrument hub. The hub is a bearing, which is connected to the rim through the car bar to form a complete wheel set.

The hubs of bicycles, that is, the front and rear axles, can be roughly classified in the following ways: according to the type of bearing, according to the width of the gear opening, according to the size of the shaft core

This article introduces the principles and techniques of bicycle derailleurs (1)