The stem on a bicycle is an essential component that connects the handlebars to the frame's head tube. Here is a description of its functions and characteristics:
Description :
The stem is generally a piece of metal (aluminum, carbon, sometimes steel) or alloy that attaches to the head tube of the bicycle frame. It has one or two extensions (the arms) which support the handlebars of the bicycle. The stem can vary in length, angle and design depending on the type of bike and the rider's preferences.Functions:
1. Connect the handlebars to the frame:
The main function of the stem is to connect the handlebars to the frame's head tube. This allows the rider to control the direction of the bike by turning the handlebars.
2. Adjust the position of the handlebars:
The stem also allows you to adjust the position of the handlebars in relation to the cyclist. By changing the length or angle of the stem, you can adapt the position of the handlebars for greater comfort or performance.
3. Transfer steering force:
The stem should be strong enough to withstand the forces exerted when steering the bike, especially around corners or over rough terrain.
Features :
1. Length:
The length of the stem determines the horizontal distance between the steering pivot and the center of the handlebars. A longer stem gives a more stretched and aerodynamic position, while a shorter stem gives a more upright and maneuverable position.
2. Angle:
Some stem models offer an adjustable angle, which allows you to adjust the inclination of the handlebars in relation to the head tube. This can help achieve a more comfortable or aggressive riding position.
3. Material:
Stems are usually made from aluminum, carbon or alloy. Each material has its own advantages in terms of weight, stiffness and durability.
4. Fixing:
The stem attaches to the frame's head tube using bolts. Some models may have specific fixing systems, such as clamps or cone head screws.
In summary, the stem is a crucial component of the bicycle that helps connect the handlebars to the frame and adjust the riding position for greater comfort and performance.