pyörähaarukan

Pyörähaarukka, often referred to as a bike fork, is a crucial component of a bicycle that connects the front wheel to the frame and handlebars. It plays a significant role in steering, stability, and shock absorption, depending on the type of fork.

There are two primary categories of bicycle forks: rigid forks and suspension forks. Rigid forks are made from a single piece or two pieces of material, typically steel, aluminum, carbon fiber, or titanium. They offer a direct connection between the wheel and the frame, providing a lightweight and efficient ride, but transmit all road imperfections directly to the rider.

Suspension forks, on the other hand, are designed to absorb shocks and vibrations from uneven terrain. They incorporate a spring mechanism (coil or air) and damping system to manage the compression and rebound of the fork. Suspension forks are commonly found on mountain bikes and some hybrid or gravel bikes, enhancing comfort and control on rough surfaces.

The fork's geometry, including its rake (or offset) and length, influences the bicycle's handling characteristics. Rake refers to the angle of the fork's steerer tube relative to the wheel axle. A steeper head tube angle combined with a greater fork rake can result in quicker steering, while a slacker head tube angle and less rake contribute to more stable handling. The choice of fork is critical for a bike's intended use and rider preference.