Standards in this area there are many, and your riding environment has a relationship, there is only one list, there is a certain plus or minus: if you only ride on smooth pavement, and never in the off-road riding, the minimum safety distance can be 2 inches (5cm); If you have uneven pavement, the minimum should be three inches (7.5cm); cross over, at least should be 4 inches (10cm), or greater. In fact do not have to reach so strict, especially for some of the smaller riders head for the small frame to find it is sometimes difficult. And the same frame, suspension fork to use a different trip, different widths of tires, will affect this value. Personally, I think, to maintain a minimum of about 6cm is acceptable, although not so perfect. If necessary, you may need to sacrifice large travel front fork and fat tires the choice, but for the standard XC, the trip to the front fork and tire width requirements are not the great. Select the frame by the above criteria, you may feel small,Puma Repli Catin fact, is quite normal, do you think it is because the previous small-big. Some say mountain bike frame than the usual two or three numbers of small frame is the same reason. This time, you come to consider the value of the frame of the TT, CT value and the CC value, you will find that they are within reasonable limits, at least not large. Some people say that, according to the standard shelf is too small, need to pull Lao Gao seat post, fearing it will break. In fact, the mountain bike frame are basically compressed frame, seat post will require a longer, market 35cm, 41cm length of the seat post is for this reason many, length of mean weight increase, regardless of the weight Keke bike, you can shortened if no one wants to lengthen the decision, manufacturers are not stupid. As long as it does not exceed the safety line, weight does not exceed the design specifications, it should not have problems, of course, but the quality of related products are not discussed. Riser with the size of the frame, the tube size is not identical to, that is, the different TT values, then choose how much of the TT value? The length of the relevant legislation with the need to set options on joining the following parts. The first step is to choose the frame size, then it should be related to the frame material, frame brand, price frame,puma bolt shoeshard tail soft tail and so on. For these, it can be bonding capacity of their own preferences and choose. Avoid putting the cart before, you know, no matter how expensive a beautiful frame, if the size in your inappropriate, then what is the use? We bought it used movement to bring us healthy. Of course, that is another story collections bought. 2. To establish the legislation, which is commonly known as a leader, to establish the main parameters are length (along the pole's length from the center to center), angle, whether positive and negative loading and so on. Together with the establishment and the frame, together constitute the total length of the tube. Note that the length does not necessarily mean "the possession of the frame to set the length of TT value +" because of the existence of the legislation at an angle, and the pros and cons of equipment will result in different height, thus affecting the entire length of the tube, puma speed cat 2.9the actual measurement to obtain needed . Standover determined in the frame, the total size of the tube length is most in need should be pondering the parameters. The length of the number of operators is better? On the one hand depends on your body size, on the other hand depending on use. Slowly the following statement: First of all can not be too short to ensure a perfect extension to the upper body, no feeling of huddled; to ensure that the handlebar and your knees at a safe distance, even in the standing stampede, the knee will not hit the handlebars.
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First, the frame: 1. What is the frame? Frame equivalent to the human skeleton, the frame can be fitted with a variety of bicycle parts. Frame made of iron, aluminum and other material composition, according to the length of pipe angle affect the overall composition of the characteristics of a bike. For example, a good bike ride straight, easy switch to bicycles, comfortable riding the bike, etc. Many of these factors are determined from the frame. 2. How can I be a good frame? Light, fast, flexible and good goal is one of the frame, in order to achieve this goal, each frame depends on the manufacturer's process. Such as the design of the frame is based on material strength and characteristics of the design, puma future cat m1welding technology is mature. These have a direct impact on the appearance of the frame, strength and flexibility. There are more important is the painting, even painting a good frame, and 3-4 layers of spray paint. Do not underestimate painting, good painting can make a bike easier to maintain, easy to rust. If the frame does not meet the above requirements to loading, then it is possible to produce a straight line can not turn the bike riding or difficult, or very soon on the back of the bike. 3. Frame is composed of what material? Most of the iron frame, but the iron frame is now divided into Cr-Mo steel, high strength steel, ordinary steel added to the other extreme in the iron frame, adding these other ingredients, you can make such a thin pipe, makes the frame lighter overall. Recently, on the basis of intensity is not reduced, there has been using materials other than iron frame, such as aluminum alloy. There used to cycling of carbon fiber materials, titanium frame. Second, the component parts 1. What is a bicycle parts mounted on the frame a wide range of parts has its own role, for example, is to make bicycle safety brake to stop; Pedal Power is transmitted to the wheels, etc. production and sale of these parts of the specialized manufacturer of bicycle parts factory is called, well-known parts manufacturers develop new products every year,puma ducati testastrettathese products are also provided to major bicycle manufacturers, and then appeared on the market. 2. What is the best bike parts? Simply say that is both light and strong, and better performance. With these conditions because it was easy bike ride, safe and convenient. But to achieve all of the above conditions, you need good material. Therefore, bicycle parts bicycle is often about the price of a specific factor. The best is the ability to participate in the Olympic cycling components. Regardless of weight or strength properties of the best materials are used. Third, the assembly 1. Assembly good parts if the assembly is not good, neither will be as attentive after the design architect, and no experienced craftsmen to build the house, so you live in fear all day long, for fear it will collapse. So, if you do not want the regret later, you should understand that knowledge. 2. Bicycle comfort functions A. Transmission? Many people mistakenly believe that a bike equipped with a transmission speed in order to speed up the ride, in fact, issued by the greatest force people to only 0.4 horsepower. Transmission is to help people easily play this maximum horsepower out of the tool. B. What are the benefits of transmission? Bicycles are generally used in the city, the city actually has a lot of slopes.Puma Repli CatFor example sometimes you will feel when the pedal bike suddenly sink, with the eyes can not determine the slopes more often. At this point, the role of transmission can be fully reflected, so if there is transmission, this time into a lighter gear as long as you can ease the ride.
The design method of early Europeans strange world's first truly practical bike appeared in the early 19th century. 1817, Paris, France, Germany De Laisi invented two rounds with a wooden bicycle handlebars. Bike after the advent of the Europeans quickly became the favored means of transport. Some idea of the 19th century Europeans out of some ideal bike map.cheap puma shoesThe early stages of bicycle invented, people think that the greater the faster the driving wheels, the wheels almost two men riding a bike for a height of a man. The invention of the bike stage, and some people do not put the two wheels of a bike designed around the place, but around the two wheels make the place, this bike's appearance is somewhat similar to a wheelchair. This is the early Europeans a three-wheeled bicycle design. Three-wheeled bicycle balance better and easier for people to learn to ride three-wheeled bicycle. With future improvements in bicycle technology, gradually developed into a three-wheeled bicycle cargo transport. This is a three-wheeled bike, but the designers of two momentum wheels on the car front, one rear wheels on the car. When people ride this bike can do in front of a passenger. This bike can take modern man in the back of the bike design just the opposite. ① body composition components: including frame, puma shoes 2011fork, handlebar, saddle and fork and other pieces, the main body of the bicycle. ② transmission parts: including pedals, cranks, sprockets, chain, bottom bracket and flywheel, etc., by the action of human foot pedal, the above rotation wheel drive transmission parts, drove forward. ③ action part: the front and rear wheels, including front and rear axle parts, spokes, rims (rims) and tires. ④ safety devices: including brakes (brakes), lights, bell, reflectors and so on. According to need, but also add some accessories such as brackets, racks, insurance, forks, fenders, pump and so on. In addition, institutions with speed sports cars, race cars, mountain biking, etc. is also equipped with variable speed controller and etc. before and after the call chain. Can be divided into categories according to use trucks, ordinary cars, light trucks, sports cars, race cars, mountain bikes, vehicles (such as the exercise bike, acrobatics car) and so on. Depending on the object can be divided into men and cars, women car and stroller and so on. According to the size of the wheel can be divided into 71 cm diameter, cars, car 66 cm,Puma Espera61 cm and other vehicles. According to the main frame and other parts of the timber can be divided into carbon steel cars, steel cars, aluminum and other vehicles. According to the structural frame can be divided into bars stacked cars, trucks and other removable car and overall. Principle of the bicycle frame, tires, pedals, brakes, chain, 25 parts, the basic components are indispensable. Among them, the frame is a bicycle frame, it has to bear the weight of most people and goods. Characteristics in accordance with the work of the various components can be broadly divided into navigation systems, drive system, brake system: 1, orientation systems: the handlebar, fork, front axle, front wheel and other components. By manipulating the handlebars can ride to change direction and keep the body balanced.