Derailleur gears operates the lever while pedalling, the change in cable tension moves the chain-guide from side to side, "derailing" the chain onto different sprockets. For more information about the choice of particular gear ratios and sprocket sizes, see Bicycle gearing. "Derailleur" is a French word, spelled "dérailleur" in French, derived from the derailment of a train from its tracks. Its first recorded use was 1930. At least one notable bicycle industry author has attempted to promote the anglicized spelling of "derailer". As of 2013, however, neither Merriam-Webster nor the Oxford English Dictionary has an entry for "derailer". Various derailleur systems were
Longest word in English is also known as Webster Lake. The longest hyphenated names in the U.S. are "Winchester-on-the-Severn", a town in Maryland, and "Washington-on-the-Brazos", a notable place in Texas history. The longest official geographical name in Australia is Mamungkukumpurangkuntjunya. It has 26 letters and is a Pitjantjatjara word meaning "where the Devil urinates". In Ireland, the longest English placename at 19 letters is Newtownmountkennedy in County Wicklow. "Guinness World Records" formerly contained a category for longest personal name used. Long birth names are often coined in protest of naming laws or for other personal reasons. Longest word in English The identity of the