Aerodynamics of a cyclist

Air resistance during cycling

A cyclist generally suffers from two types of resistance: air resistance and rolling resistance. Aerodynamics, as the word suggests, has to do 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 is created and the easier the air passes by an object. Cyclists do everything they can to be as aerodynamic as possible. For example, they wear special socks, bicycles are specially constructed and they adopt the craziest positions when descending.

What can a cyclist do about air resistance?

In the field of aerodynamics, a cyclist can gain the most by adjusting his position. But since cycling should also remain fun and your back should last longer than Pogajar's current career, I would like to tell you where you can benefit from your aerodynamics without having to make any compromises anywhere. Where many amateurs can benefit is the aerodynamics of your cycling outfit. And although it is logical that someone who sells cycling clothing would say this, I would like to explain why.

The fit of aerodynamic cycling clothing

First of all, it is important that a shirt fits properly. By this we mean that there should be no large flapping pieces of fabric. A small fold around the armpits or seams is certainly not a problem and provides the necessary freedom of movement, but large flapping pieces of fabric are very bad for aerodynamics. That is why a shirt should be a bit tight. And although this sounds logical, we still too often see people wearing oversized or loose shirts around races.

The membrane of the fabric

Another part that you may not think about as quickly is the membrane of the fabric. In the cycling clothing market, almost every cycling shirt is made of polyester. This is due to the unique properties of this fabric, it wicks away moisture well, is low in weight and lasts a long time. However, there are major differences in the aerodynamics of the different types of cycling clothing. This has to do with the membrane of the fabric. You can think of a membrane as a thin layer of foil that is in cycling clothing. In aerodynamic cycling clothing, these membranes are smoothed and guide the air well along the fabric. With cycling clothing without an aerodynamic membrane, the air has much more grip on the shirt. And now I hear you thinking, does this matter so much? The answer to this is a resounding yes. Through research in wind tunnels, we discovered that a smooth membrane has 10% less air resistance than regular cycling clothing. As an amateur you can definitely experience a big difference. In addition to aerodynamic advantages, a smooth membrane also has the advantage that it is less abrasive on the skin and thus increases comfort.