Carbon fiber as a high-tech materials using the recently ten years on a bicycle. Strictly speaking, carbon fiber is not pure carbon, but carbon element through a mixture of woven processing after the use of epoxy resin adhesive and reinforcement. The early carbon fiber due to technical reasons above, epoxy resin using even decomposition in the sun. With the progress of science and technology, the excellent material was gradually overcome the shortcomings in the. Such as Germany's K frame using carbon fiber grade 16K, the carbon fiber strength than steel, and has a commitment to quality lifetime warranty.

From the appearance we can easily distinguish the frame. The rough style, other wild aluminum frame; the tube body slender, skinny full steel; and that there is no painting, exude a metallic luster is titanium frame; the surface of carbon fiber is covered with a variety of 3D fabric surface, very modern.

Characteristics of carbon fiber frame is light, does not bend, shock absorption, however, give full play to the excellent properties of carbon fiber, the technology does not look so easy, quality differences between the carbon fiber material factory is large. Bicycle manufacturers to take into account the cost, carbon fiber is unlikely to make use of high level frame. Although there are real problems mentioned above, but carbon fiber frame or other material has the advantages of no, can produce 8, 9kg

Lightweight bicycle around the carbon 27.5 rim, climb slope can best embody the advantages of smooth and refreshing, ascent. But not like some light aluminum alloy frame, climb slope felt a pull back force.

Carbon fiber is the forming resin solidification of carbon fiber. Very light, but it is a direction of the material (tensile strength but easily broken), so the method of thin layers of overlapping to solve the disadvantages.

Through sexual cycling around is one of the main factors of efficiency,increase of wheel diameter can reduce wheel Angle when in contact with obstacles,roll over obstacles,the easier;29"Angle of attack Angle is smaller than 26" six degrees,27.5"smaller than 26" 4 degrees,26,maximum Angle of attack Angle,29 through sex is best,27.5" is very close to the performance of 29".

The greater the wheels on the other hand,the higher the center of the car,29,"center of gravity is lower than carbon 27.5 rim for grade efficiency,27.5" is better than 29" big wheels for climbing ability is significantly increased,26" climbing Angle 20 degrees,27.5"climbing Angle of 25 degrees,29" climbing Angle of 30 degrees.

From through performance compared with climbing ability,26"performance is better than the latter two,best 29",27.5"which is very nearly 29" for being limited by the physical geometry of asians,27.5"is the ideal choice for improving the efficiency of cycling and fun.

Large diameter wheel tire contact with the ground area is larger,there is a better grip,help to improve control performance,when the downhill good grip is further enhanced playability,rapid downhill,drivers can accurately grasp the road turns,but good grip can actively improve braking efficiency.

The same width of tire,26"smallest contact area and 29" to 26"ground contact area is large,27.5" between 29"and 26".