Derailleur gears battery pack and to a small electric motor that drives the derailleur. Although expensive, an electronic system could save a racing cyclist time when changing gears. Derailleur gears Derailleur gears are a variable-ratio transmission system commonly used on bicycles, consisting of a chain, multiple sprockets of different sizes, and a mechanism to move the chain from one sprocket to another. Although referred to as "gears" in the bike world, these bicycle "gears" are technically "sprockets" since they drive or are driven by a chain, and are not driven by one another. Modern front and rear derailleurs typically consist of a
Influence of French on English chose to stay in England moved further away from France and, therefore, from the French language. Keeping its status as the language of justice and the language of power, England saw the first teaching manuals for teaching French to the English. These manuals were intended for English nobles who wish to perfect their knowledge of French and taught it to their children. Two types of French spoken in the higher spheres of English society could be distinguished during the thirteenth century : the Anglo-Norman dialect, which was the aristocrats' mother tongue, and a more prestigious type of French as a