Bicycle wheel

Overview

A bicycle wheel is a wheel, most commonly a wire wheel, designed for a bicycle. A pair is often called a wheelset, especially in the context of ready built "off the shelf" performance-oriented wheels. Bicycle wheels are typically designed to fit into the frame and fork via dropouts, and hold bicycle tires.

Design and Construction

The design and construction of a bicycle wheel has a significant impact on the bike's performance. The wheel is typically composed of a rim, spokes, a hub, and a tire. Each of these components plays a crucial role in the function of the wheel as a whole.

Rim

The rim is the outer circular design of the wheel that holds the tire. While some rims are made of steel, many are made of lightweight aluminum alloy, or, in the case of high-end bikes, carbon fiber. The rim serves as the anchoring point for the spokes.

Spokes

Spokes are the thin rods that radiate from the center of the wheel to the rim. They are typically made of stainless steel or aluminum. The tension of the spokes against the rim of the wheel is what allows it to hold weight without collapsing.

Hub

The hub is the center of the wheel and contains the axle and bearings. The hub is the part of the wheel that attaches to the bike at the dropouts. Hubs can be made of a variety of materials, but they are typically made of aluminum.

Tire

The tire is the outer part of the wheel that makes contact with the ground. Tires can be made of a variety of materials, but most bicycle tires are made of rubber. The tire is filled with air and provides a cushion between the bike and the ground, improving comfort and performance.

Wheel Types

There are several different types of bicycle wheels, each designed for a specific type of cycling.

Road Bike Wheels

Road bike wheels are designed for riding on paved roads. They are typically lightweight and aerodynamic to increase speed and efficiency. Road bike wheels are often made of lightweight materials like aluminum or carbon fiber.

Mountain Bike Wheels

Mountain bike wheels are designed for off-road use and are typically heavier and more durable than road bike wheels. They are designed to withstand the impact of rocks, roots, and other obstacles found on mountain bike trails.

Hybrid Bike Wheels

Hybrid bike wheels are a combination of road and mountain bike wheels. They are designed for general-purpose riding and offer a balance of speed and durability.

Wheel Size

Bicycle wheel size refers to the diameter of the wheel, with smaller wheels typically found on children's bikes, and larger wheels found on adult bikes. The most common wheel sizes are 26", 27.5" (or 650b), and 29" (or 700c).

Wheel Maintenance

Regular maintenance of bicycle wheels is essential for safe and efficient cycling. This includes checking the tire pressure, checking for damage to the rim or spokes, and ensuring the wheel is properly aligned.