Best mountain bike wheels-Ekay Original article

2016-04-19

　In fact, "best mountain bike wheels" concept has a lot to road racing, for example, lightweight road frame for climbing season, relatively little heavier but less air resistance aerodynamic frame is more suitable for flat road stages, and for bad roads need less light classical race will not pay attention to aerodynamics endurance road bike, mountain bike classification is more complicated, and this will not go into details, the car frame geometry regardless of the structural material of various differences, ultimate goal is to go to the corresponding road ride, suitable working conditions, people riding up a smile on his face is a "best mountain bike wheels', I believe most people would say so agree.

One problem: If it is because of weight, carbon fiber-reinforced composite plastic is certainly doing my part in this top-level road frame less than 700 grams of the times, carbon fibers significantly widen the gap with the traditional metal materials, 900-1000 grams of carbon skeletons of small brands thousands of dollars can buy the vehicle, many years ago really can not imagine, and the current top technology with top aluminum material close to the limit of only 1,000 grams, but the price has been high ridiculously close to the mid-range price of carbon fiber frame, relative steel also can be used to the current top-Renault 953 pipe, with his 0.3 mm wall thickness, 2000mpa tank armor plate tensile strength level to achieve 1000 g of the top-level frame, but the yield of raw materials and limited his production relative prices are approaching the high-end brand carbon fiber frame, a small minority is drunk, while the conventional chromium-molybdenum steel frequently close to 2 kg arguments on some really crass. . . As an aside, many on the market within 3000 aluminum mountain bike vehicle weight rarely below 14 kg, while the same price of chromium-molybdenum steel single-speed vehicle is almost at around 8-9 kg, aluminum lighter than steel is actually relative.

Question two, this thing is very geometric professional will not say more, but corresponds to the frame on the market, since the carbon fiber tooling costs expensive, very few manufacturers for profit is not high-end carbon fiber city commuter car developed separately for urban geometry and the corresponding mold, many cars are directly or mountain bike road bike geometry change of the parts directly used, actually you could not find a leisurely ride up the feeling. Aluminum and steel structures car will be much better, especially the tubular frame of metal materials, it is easy to manufacture the specific geometry of the city car, so the use of this market city car models, two metal materials evenly divided geometric flexibility of .

Question three, narrow tires, tire pressure and appearance will involve two aspects, tire pressure will need to recover from the high point of the frame of comfort to this last question to say. From the outside only, on the same rigid testing standards, these types of materials in order to achieve the same strength will be a completely different frame tube outer diameter, respectively, from coarse to fine carbon fiber, aluminum, steel, such as They say the same pipe deformation intensity, the average case of 30 mm diameter steel pipe with a diameter corresponding to the aluminum tube 50-60, the diameter of the carbon fiber tube 60-80, which is why a lot of carbon fiber frame shop car looks better than steel thick aluminum more reason, then we narrow tires on very thick frame will be very very wrong, so this issue steel wins, by aluminum, carbon fiber, it can only last a grievance committee. . . However, the appearance of such a thing varies, this is just my personal recommendation.

Question four, single-speed setting, in fact, different materials, as long as the frame structure allows the design, assembly can all be single-speed transmission, this three frames evenly divided.

Fifth, this situation is set to play if the car distressed people will die, but the accident is not a person can control, for example, I poured a frame, the frame tube on a hard object hit, compared to the three materials, the tube is likely instant just off some paint, after all, the material itself has elasticity, the general impact of the impact of their own can spring back, aluminum is relatively no such feature, coupled with the good times with a variety of aluminum frame are drawn tube technology made very thin, a single impact over the same smashed cans will be like a pit, but pits are generally not affect the city riding, while the carbon fiber is more Jingui, and a carbon fiber frame is frequently 400-500 carbon fiber sheets of different sizes angle preparation methods, each one has a specific direction of the force attribute, but reinforced each other and complement each other.

Question six, vibration properties platitudes three materials, aluminum is very low elasticity of the material, all the vibrations transmitted to the road through the tire frame, directly through the handle and the seat cushion and then spread on minimal filtering body, since the city is different from most of the time standing mountain bike riding, or different from road racing forward position the weight pressure in the legs to maximize pedaling power, so most of the weight is absorbed by the hips is very painful, it may be relatively good elasticity of steel can do this to reduce the vibration of the media, it is a relatively easy way out of carbon fiber, his rigidity and elasticity can be achieved through the fiber direction, the angle weaving method to select the tuning, but this tune and set there is a cost.

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