Bar is the name of early bicycles. The so-called 28 refers to a 28-inch wheel, hence the name 28. The big bar means that the car has a thick black beam, which can seat people and carry goods. It's called the big bar. This kind of bicycle was very popular in the 1970s and 1980s. Can be said to be a symbol of status, but also one of the four big things to get married that year.
In the 1960s and 1970s, vehicles that could carry a small amount of goods were very popular. People or goods loaded on "28" bicycles can be seen everywhere on urban roads and dirt roads in rural areas. "28" bicycles became an indispensable means of transportation for every household in that era.
The structure of Barr bicycle
Frame components are the basic structure, skeleton and main body of Barr bicycle, and other components are directly or indirectly installed on the frame. Because the 28 th bicycle runs by the driving force and riding skills of the human body, the frame becomes an important structure to bear the impact load generated by the 28 th bicycle in the running process and whether it can carry the human body comfortably and safely.
The manufacturing accuracy of frame parts will directly affect the safety, stability and lightweight of vehicles. Generally, spokes have the same diameter. In order to reduce gravity, some spokes are made into variable diameter spokes with two big ends and a small middle, and some spokes are made into flat streamlined spokes to reduce air resistance. It is composed of brake parts, and the rider can control the brake at any time to slow down the 28-year-old bicycle and ensure the driving safety.