Fatbike

Fatbike or fat bike is a type of bicycle designed for off-road cycling. Fatbikes are easily recognizable by their oversized tires, which are typically 3.8 inches (97 mm) or larger and rims wider than 2.6 inches (66 mm), allowing them to ride on soft, unstable terrain, such as snow, sand, bogs, and mud. Fatbikes are built around frames with wide forks and stays to accommodate the wide rims required to fit these tires. The design of fatbikes aims to provide improved traction and flotation on soft surfaces.

History

The concept of fatbikes can be traced back to the early 1900s, but it wasn't until the 1980s that modern fatbikes began to take shape. The development of fatbikes is often attributed to the desire for bicycles that could traverse the idyllic but challenging snow-covered landscapes of Alaska and the sandy deserts of New Mexico. Early versions of the fatbike were created by cyclists modifying existing frames to accommodate wider tires and rims. However, the first commercial fatbike, the mountain bike named the "Surly Pugsley," was introduced by Surly Bikes in 2005, marking the beginning of fatbikes as a distinct category within mountain biking.

Design and Features

The hallmark feature of a fatbike is its wide tires, which can range from 3.8 inches to 5 inches or more in width. These tires are mounted on equally wide rims to provide a large contact area with the ground. The increased tire volume allows for riding at significantly lower air pressures than standard mountain bikes, which improves traction and flotation. This characteristic makes fatbikes particularly well-suited for snow and sand, where a narrower tire would sink and become difficult to pedal.

Fatbike frames are constructed from a variety of materials, including Aluminum, carbon fiber, steel, and titanium. The frame geometry typically features a longer wheelbase and a more upright riding position to enhance stability on uneven terrain. Additionally, fatbikes often come equipped with features such as disc brakes for reliable stopping power in all conditions and suspension forks to absorb shocks from rough terrain, although many purists prefer rigid forks for their simplicity and lower maintenance.

Uses

Fatbikes are versatile and can be used for a wide range of cycling activities. While they are particularly popular for riding on snow and sand, their stability and traction also make them a good choice for trails, gravel roads, and even some forms of racing. Fatbiking has grown into a distinct segment of the cycling community, with dedicated races, festivals, and group rides organized around the unique capabilities of these bikes.

Popularity

The popularity of fatbikes has grown significantly since the early 2000s. This growth can be attributed to advancements in bicycle technology, which have made fatbikes lighter and more affordable, as well as the increasing desire among cyclists to explore more remote and challenging terrain. The fatbike community is vibrant and welcoming, with a strong DIY ethos and a culture that encourages experimentation and customization.

See Also

• Mountain Bike
• Cycling
• Bicycle Frame