Aerodynamics of a cyclist

Air Resistance in Cycling

A cyclist generally has to contend with two types of resistance: air resistance and rolling resistance. Aerodynamics, as the word suggests, deals with air resistance. The term aerodynamics literally means the science of how air moves around an object. So the more aerodynamic an object is, the less resistance it generates, and the easier it is for air to move past it. Cyclists do everything they can to be as aerodynamic as possible. For example, they wear special socks, their bikes are specially built, and they take the craziest poses when riding downhill.

What can a cyclist do for aerodynamics?

Regarding aerodynamics, a cyclist can at most adjust their posture. But since cycling should also be fun and your back should last longer than Pogacar's current career, I'd like to tell you where you can improve your aerodynamics without having to give anything up. Because where many amateurs can still make gains is in the aerodynamics of the cycling outfit. Even though it makes sense for someone who sells cycling clothing to say this, I'd be happy to explain why.

The fit of aerodynamic cycling clothing

First of all, it is important that a jersey fits snugly. By this, we mean that there should not be large, flapping pieces of fabric. A small fold under the armpits or at the seams is certainly not bad and even provides the necessary freedom of movement, but large, flapping pieces of fabric are very bad for aerodynamics. So a shirt can indeed be tight. And although that sounds logical, you still see too often people with oversized or baggy jerseys on the bike.

The fabric membrane

Another component you might not easily think of is the membrane of the fabric. In the cycling clothing market, almost all cycling jerseys are made of polyester. This is due to the unique properties of this fabric: it wicks moisture well, is lightweight, and is very durable. However, there are major differences in the aerodynamics of the various types of cycling clothing. This has to do with the membrane of the fabric. A membrane is a thin layer that is inside the cycling clothing. In aerodynamic cycling clothing, these membranes are smoothed and guide the air well along the fabric. In cycling clothing without an aerodynamic membrane, the air has much more grip on the jersey. Now you might be wondering: is that so important? The answer to that is a clear yes. Through wind tunnel research, we have found that a smooth membrane has 10% less air resistance than regular cycling clothing. So as an amateur, you can experience a big difference. Besides the aerodynamic advantages, a smooth membrane also has the benefit of chafing less on the skin, thus increasing comfort.