What is a bicycle rim? Great materials and uses of bicycle rims

The rim of a bicycle is the part that makes up the wheel that helps the bike to move. Find out with Tnhelearning.edu.vn what is a bicycle rim? Great materials and uses of bicycle rims!

What is a bicycle rim?

Bicycle rims, also known as braces, are one of the important parts that help the bike move. The wheel rim has two main functions: holding the tire and creating a brake surface (for bicycles with rim brakes). Specifically:

• The rim diameter will affect the width of the tire. If the rim is wider, the tire will have to be stretched more to fit the rim, resulting in an inflated tire. When this happens, driver comfort may be affected and vehicle stability may also be reduced.
• The rim is the brake surface, the material of the brake surface has a great influence on the braking performance. The better the brake material on the tire, the faster and safer the vehicle will be able to stop in the event of an emergency brake.

Bicycle rims, also known as braces, are one of the important parts that help the bike move

Bicycle rim material

Most wheels will have aluminum rims of varying quality, while high-end wheels often have rims made of carbon fiber to help reduce weight while increasing rigidity.

Wheels made of aluminum have better braking ability than carbon fiber. This is because carbon fiber tends to perform poorly in wet conditions and over long distances. Meanwhile, aluminum has better heat conductivity, which helps to cool the brake surface, thereby increasing the durability of the brake surface.

Based on this, some brands offer aluminum brake surfaces combined with carbon fiber rim making. However, these designs are often heavier than steel, aluminum alloy rims, etc.

Carbon fiber rims help reduce weight while increasing rigidity.

Structure and important parameters on bicycle rims

Structure

Wheels are usually round in shape and have different diameter sizes depending on the vehicle type and intended use. Normally, the diameter of a bicycle wheel rim ranges from 650 – 736mm .

The rim consists of an inner ring that is covered by a tube to keep the tire from slipping out of the bearings during rotation. In addition, the wheel spokes are attached to the rim and connected to the vehicle’s frame to form a full wheel system.

Wheel spokes are attached to the rim and connect to the vehicle’s frame

Important parameters

On today’s wheel rims, the notation system according to ISO 5775 , also known as the international unit of measurement, is used. Specifically, the first digit of the bicycle parameter is the wheel rim size.

For the remaining second digit will represent the fat – thin of the rim or the diameter of the car’s gut. For example, the ISO 5775 spec for a folding bike is typically 20 x 1.75 . In which, 20 is the diameter of the wheel and 1.75 is the width of the wheel, both parameters are in inches .

With the symbol 47 – 339 is 47mm layer width and 399mm is the wheel diameter

Uses of bicycle rims

Tire shaping

Thanks to the bicycle rim, the tires are shaped and centered in the correct position when traveling. In case, if the tires are not shaped properly, it can lead to many problems such as vibration, uneven tire wear, increased friction, loss of control and dangerous driving.

With bicycle rims, the tires are shaped and centered in the right position when traveling

Create a surface for brakes (with rim brake cars)

Bicycle rims play an important role in creating a surface for the braking system to work effectively. Accordingly, the bicycle rim creates a surface for the brake through the contact surface between the rim and the brake surface of the wheel.

Bicycle rims play an important role in creating a surface for effective braking

Connect with spokes to create stability for the wheel

Bicycle rims and spokes are two parts that link functions together. While bicycle spokes help to evenly stretch the rim, the wheel rim works to receive traction through the spokes and make the wheel move.

In addition, the link between the car’s gold and the bicycle spokes also helps the bike have a solid structure in a unified block. From there, ensure safety when moving.

Bicycle rims connect to spokes to create stability for the wheel

Make sure the bike can move

The rim is an important part of the bike, it ensures the bike can move safely. The rim has the effect of bearing the weight of the occupants of the bicycle and the items on the vehicle.

Bicycle rims are designed for shock absorption and wind resistance. With a small spike surface on the surface of the rim, it helps to reduce friction between the tire and the road, making the car move smoother and with less effort.

The rim helps to support the weight of the cyclist and the items on the bike.

The above article has explained to you clearly what a bicycle rim is, the material and great uses of a bicycle rim. Hope the above information will be useful to you.