At present, bicycle sports are becoming more and more popular, and the types and forms of mountain bicycle parts are becoming more and more abundant. Many riders are ignoring or confusing the basic performance and conditions of many bicycle parts while pursuing the high performance and aesthetic appearance of bicycle parts, and many of the combinations that seem reasonable should be wrong. Below I will give you a list of common mountain bike parts selection and misunderstanding.
One, four Palin drums are better than two Palin flowers
Description: The four Palin hubs refer to four independent Palin bearings in the rear hub, one on each side. Other common ones are 2 Palin drums and 5 Palin drums - there are 5 independent Palin bearings in the rear hub, 3 on the tower side (one side of the flywheel) and 2 on the other side. No matter how many Palin drums are referred to, the number of the inner drums is only two. For example, you want 4 Palin drums, the rear drum is 4 Palin, the front hub is two Palin; the quad5 Palin drum, the rear hub is 5 Palin, and the front hub is two Palin.
Quite a part of the riders think that the four Palin drums are more powerful than the two Palin flowers. This is a misunderstanding. The running degree of the Palin drum depends on the moisture of the Palin and the number of Palin. The more the number of Palin, the greater the rolling resistance of the hub.
The Doplin hub (3 or 3 Palin and above) is characterized by a greater hub strength for greater impact, reduced Palin damage and reduced Palin wear.
Second, the size of the tire
The current common mountain bike tire sizes are 26x1.3, 1.5, 1.75, 1.9, 1.95, 2.0, 2.1, 2.125, 2.3, etc.
I often hear the riders say, how is my 2.1 tire is almost the same as your 1.95 tire?
The size data indicated on the car's dimensions means (in the case of 26x2.0): the outer diameter of the rim is 26 inches and the height of the tire is 2.0 inches. The 2.0 here refers to the height of the tire (the height of the outer edge of the rim to the ground under normal tire pressure) rather than the width. The higher the tire, the greater the outer circumference of the tire, so we need to adjust the base of the code according to the size of the tire. The height of the tire is an international standard, and the width is not, so the width of the tire of the same size is not necessarily the same. Because of this, many riders found that the widths of some 2.1 and 1.95 tires of different brands did not seem to differ much.
Advantages of large size tires: The outer diameter of the wheel becomes larger. 1. The tire's rotational inertia becomes larger, which is more conducive to maintaining the speed of the car. It is because of the large diameter rims such as the 700c for station wagons and road cars. 2. The larger the wheel diameter, the easier it is to pass the rugged road surface and improve vehicle passability and off-road performance. 3. Raise the body to reduce the chance of the tooth plate or foot touching the obstacle during off-road. 4. The height of the tire becomes larger, and the width of the tire increases the width disproportionately, improving the stability of the vehicle during off-road.
Disadvantages of large size tires: the outer diameter of the wheel becomes larger. The turning potential of the tire becomes larger, which is not conducive to acceleration. (Inertia is a thing that helps to maintain the original motion state of the object and hinders the change of motion state)
Note: The surface of most tires is curved, and the contact area of different sizes of tires is similar under normal tire pressure.