The frame is the soul of a bicycle.
Structural Design: Different structural design will give us different riding positions, which has a great impact on the comfort of cycling.
There are two ways to mark the frame size, one is in letters, such as XS, S, M, and so on. The other is to use specific values as a mark, such as 15.5 inches, 17 inches, 19 inches, etc. . Please note that even choosing a frame of the same number or letter, the specs of different brands may be different. The corresponding height range could be slightly different and cannot be generalized.
If we choose the unsuitable frame size, it will not only affect the strength of the rider, make the cycling more laborious, but also easy to cause back pain, hand pain and other injuries. Therefore, we should choose the most suitable frame size according to our actual situation.
Frame Material: An important reference to distinguish the luxury, mid-range and entry-lever bicycles.
At present, there are mainly four types of bike frames on the market: steel bike frame, aluminum bike frame, carbon fiber bike frame and titanium bike frame. For different frame materials, its strength, corrosion resistance, and manufacturing costs are different. In addition, steel and aluminum are currently the most widely used materials for bike frames in the market, mainly because of the low manufacturing cost and mature processing technology.
Steel frames are usually used for entry-lever bicycles, aluminum frames are generally used for mid-range bikes, and carbon fiber frames & titanium frames are mostly used for luxury bicycles.