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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 London Underground R Stock ： ウィキペディア英語版 London Underground R Stock The London Underground R Stock electric multiple units were used on London Underground's District line from 1949 to 1983. Composed of new cars and converted Q38 Stock trailers, the cars were built and converted in three batches between 1949 and 1959. The cars were driving motors (DM) or non-driving motors (NDM), there being no unpowered trailers. The second batch, introduced in 1952, was constructed from aluminium, saving weight and one train was left unpainted as an experiment. Considered a success, trains were left unpainted or painted white or grey to match in 1963–68. Originally designed to operate in trains with 6 off-peak and 8 cars during peak hours, the trains were reformed as fixed 7-car trains in 1971. R Stock trains were replaced by the D78 Stock and withdrawn between 1981 and 1983. ==Construction== After World War II it was decided to replace the London Underground trains that remained with hand-operated sliding doors. R Stock was ordered to replace such trains on the District line and the LPTB considered 200 cars were needed, but due to the shortages of labour and materials following the war only 143 new cars were authorised. Some Q stock trailers that had been built in 1938 were converted into R Stock driving motor (DM) cars. The new cars were designated R47 and built by Birmingham RC&W and Gloucester RC&W and the 82 Q Stock trailers converted by Gloucester RC&W from Q38 trailer were designated R38/1. The first car arrived in 1949 and entered service in 1950. A second batch was ordered to allow the F Stock to be transferred to Metropolitan line and so allow the Circle Stock to be withdrawn. The 90 new R49 cars were constructed from aluminium and built by Metro Cammell, reducing the weight of a train by . An eight car train from this batch was unpainted as an experiment. A third batch of R59 twenty cars, 13 new, was built to allow the transfer of Q stock trailers to increase the length of Circle line trains to six cars. 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「London Underground R Stock」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.