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 from the 1066 conquest that proto-English became massively impregnated with Old French, then modern French. It should be noted, however, that only French influenced English in the centuries following the conquest. The reverse contribution of English to French was only real from the eighteenth century. The arrival of William the Conqueror and his barons significantly changed the linguistic situation in England. Norman was essentially imposed in the upper layers of society. The Anglo-Saxon dialects were supplanted by Norman in the circles of the court and aristocracy, justice and the Church. The influential circles, who came from Normandy and settled in