Cycling Class: Mistakes in the selection and use of mountain bike parts

At present, cycling is becoming more and more popular, and the types and forms of mountain Bike parts are becoming more and more abundant. Many riders are ignoring or confusing the basic performance and use conditions of many bicycle parts while pursuing the high performance and beautification of Bicycle Parts, and many of the seemingly reasonable combinations are also wrong. Here are some examples of common mountain bike parts selection and misuse.

One, four Palin drums compared to two Palin Huagu Run

Explanation: The four Palin drums refer to four independent Palin bearings in the rear hub, two on one side. Other common ones are 2 Palin hubs and 5 Palin hubs - 5 independent Palin bearings in the rear hub, 3 on the Taki side (flywheel side) and 2 on the other side. No matter how many Palin drums refer to the number of Palin inside the rear hub, there are only two front hubs. For example, if you want to use 4 Palin flowers and drums, after the hub is 4 Palin, the former hub is two Palin; the quad5 Palin hub, the rear hub is 5 Palin, the former hub is two Palin.

A considerable number of riders believe that the four Palin hubs are better than the two Palin forests. This is a misunderstanding. The degree of Pelinn's flower drums depends on the degree of Palin's freshness and Palin's number. The greater the number of Palin, the greater the rolling resistance of hubs.

The Dolberin hub (3 or 3 Palin drums) is characterized by greater hub strength for greater impact, reduced forest damage and reduced Palin wear.

Second, the size of the tire

At present, the sizes of common mountain bike tires are 26x1.3, 1.5, 1.75, 1.9, 1.95, 2.0, 2.1, 2.125, 2.3 and so on.

I often hear the riders saying that my 2.1 tyre is almost as wide as your 1.95 tyre.

The meaning of the dimension data marked on the vehicle's size is (for example, 26x2.0): the outer diameter of the rim is 26 inches, and the height of the tire is 2.0 inches. Here 2.0 refers to the height of the tire (normal tire pressure, the height of the rim to the ground) instead of the width. The higher the tire, the outer circumference of the tire is larger, so we need to adjust the base of the code table accordingly. The height of the tire is an international standard, and the width is not, so the width of the same size tire is not necessarily the same. Because of this, many riders find that the widths of some different brands of 2.1 and 1.95 tires do not seem to have much difference.

Advantages of Large Size Tires: Larger Wheel Outer Diameter

1. The turning inertia of the tire becomes larger, which is more conducive to maintaining the speed. Wagons and road bikes use large-diameter rims such as 700c because of this.

2. The larger the diameter of the wheel, the easier it is to pass through rugged roads and improve vehicle passability and off-road performance.

3. Raise the body to reduce the chance of the sprocket or foot contact with obstacles during off-road.

4. The height of the tire becomes larger, the width of the tire will increase disproportionately in width, and the stability of the vehicle when off-road is improved.

Disadvantages of large size tires: Larger wheel outer diameter

Tire rotation potential energy becomes larger, which is not conducive to acceleration. (Inertia is a thing that helps maintain the original movement of an object and hinders the change of movement.)

Note: Most car tires have an arced surface. Under normal tire pressure, the contact area of ​​tires of different sizes is similar.

Third, tire pressure - please maintain normal tire pressure

Different brands of different types of tires have a specific normal pressure range. The normal tire pressure range depends on the tire pressure range. The normal tire pressure range is marked on the tire as "bar" and "psi".

Advantages of relatively small tire pressure in normal tire pressure range:

The tires are soft and absorb the road's vibration to the vehicle and rider, which has better comfort.

Increase the contact area between the tire and the ground to maintain high vehicle stability.

Increases grip on dry hard (ice) roads.

Reduce the pressure to prevent the tires from being trapped in very soft roads such as sand and mud.