Láncváltóval

Láncváltóval, meaning "with a derailleur" in Hungarian, refers to a bicycle's gearing system that utilizes a derailleur mechanism to shift the chain between different sprockets. This system allows cyclists to change the gear ratio, making it easier to pedal uphill or to achieve higher speeds on flat terrain.

The derailleur system typically consists of two derailleurs: one at the front that moves the chain between chainrings attached to the crankset, and one at the rear that moves the chain between the cogs on the cassette or freewheel. Shifting is usually controlled by levers or trigger mechanisms mounted on the handlebars.

Derailleur systems are common on most modern road bikes, mountain bikes, and hybrid bikes due to their efficiency and wide range of gears. They are generally lighter and more mechanically efficient than internal gear hubs. However, they are also more exposed to the elements and can require more frequent maintenance. The presence of a láncváltóval indicates a bicycle equipped with this type of external gear-shifting technology. The operation of a bicycle with a láncváltóval involves coordinating the use of the shifting mechanisms with pedaling to select the most appropriate gear for the current riding conditions.