A bike's lowest gear, also known as easy gear, is when the chainwheel is connected to a cog in the cassette that's ...

A selection of gear ratios is desirable to maintain a good impedance match between the cyclist and the bicycle. The tooth count on the chainwheel and the rear cog determines the turn ratio between the ...

When you were first learning how to ride a bike as a kid, the bike you were learning on probably didn't have any special bells or whistles on it, aside from perhaps a literal bell on the handlebars.