Depending on the purpose, bicycles differ significantly on the construction, wheel size and width of the tire, the shape of the frame and steering, and other accessories. Sports bikes are designed for cycling competitions, typically made of lightweight and more robust materials, with a minimum of additional equipment such as mudbins, lights, etc. Recreational or transport bikes are usually equipped with accessories that make driving more comfortable or convenient. In addition to the upright bike, there is a lying bike on which the biker is in a lying or semi-lying position.
Today, the following models are most frequently used according to the difference in construction:
- A city bike, often produced in male and female versions, and the difference is in the corner of the upper tube on the frame. These bikes often have additional equipment for driving comfort, such as dampers, lights, luggage, etc.
- A road bike, a specific bent handlebar shape, usually very thin tire and free of extra equipment to reduce weight. These bikes are most often the fastest, due to their low weight, lower air resistance and rolling resistance.
- Mountain bikes with flat steering, a rigid tube frame of a larger profile than the road. They are commonly equipped with a front shock absorber, sometimes with the rear shock absorber to dampen vibrations caused by uneven ground when driving outside the well-groomed paths.
- BMX is a specific design of a small wheel bike and a simple construction.
We can still share bikes according to other criteria, such as:
- A number of persons: the most common bikes are for one person, but there is also a tandem, bike for two people. Bikes are rarely used for more than two people, but it is known that there are interesting bike performances for three, four or even some examples of more bikers.
- A number of portable ratios and gearbox types: The vast majority of bikes are equipped with a speed gearbox, which enables proper power transmissions for different driving conditions such as downhill, uphill or flat ride. There are bikes with only one transmission ratio, no gearboxes, such as BMX bikes, children’s bikes, and racing bikes on the pistes. The gearboxes also come in a variety of designs, ranging from gearboxes mounted to the wheel hub, to the sprocket gearbox and the chain that, by shifting the chain between the different front and rear sprockets, changes the portable ratio.
- A number of wheels: Although the two-wheeled bike standard is the most widely used, tricycles are often used, especially for cargo transportation or children’s bikes. More than three wheels are less frequent.