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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク British Rail Class 74 ： ウィキペディア英語版 British Rail Class 74 British Rail Class 74 was an electro-diesel locomotive that operated on the Southern Region of British Railways, rebuilt from redundant Class 71 locomotives in the late 1960s. An electro-diesel locomotive is one that can operate either from an electrical supply, such as overhead catenary or (in this case) an energised third rail, or from an onboard diesel engine. All the locomotives were withdrawn between June 1976 and December 1977; they were scrapped between 1977 and 1981. == History == Twenty-four examples of British Rail Class 71 (pre-TOPS type HA) were built in 1958 at the British Rail works in Doncaster and in 1964 ten were deemed surplus to requirements, withdrawn from service and placed in storage. The Southern Region was highly impressed with the "little-ED" JA & JB/class 73 locomotives and were keen to see a higher power locomotive with the same flexibility. In 1965, discussions were opened with English Electric (builders of the production JB/Class 73) to produce a high powered electro-diesel. Originally a centre-cab locomotive was envisaged similar in concept to the Clayton Class 17 but details on this are scant. This design was not pursued - possibly due to the historical frugality of the SR and the availability of the ten moth-balled members of Class 71. meant that Crewe was chosen for the rebuilds. The redundant HA locomotives were moved in groups to Crewe where they were rebuilt into type HB/Class 74 electro-diesels. Buckeye couplers and high-level control & brake jumpers were fitted to facilitate working with other EP stock - especially TC units in push-pull mode. Also, two-tone "raspberry" air horns were mounted on the cab roof, replacing the original air whistle of Class 71 locomotives. They were intended especially for use on the boat trains to Southampton and Weymouth, as both routes included sections of non-electrified track and tramway along the public thoroughfare. The elimination of the locomotive change (at either Eastleigh (for Southampton) or Bournemouth) was envisaged and their dual power capability would greatly accelerate timings and reduce operational complexity. Originally, plans had been to number them E7001-E7010, but once rebuilt they were numbered E6101-E6110 instead. Later they were renumbered 74001-74010 under the TOPS system. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「British Rail Class 74」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.