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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