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・ British Rail Class 401
・ British Rail Class 402
・ British Rail Class 403
・ British Rail Class 404
・ British Rail Class 405
・ British Rail Class 41
・ British Rail Class 41 (HST)
・ British Rail Class 41 (Warship Class)
・ British Rail Class 411
・ British Rail Class 413
・ British Rail Class 414
・ British Rail Class 415
・ British Rail Class 416
・ British Rail Class 418
・ British Rail Class 419
British Rail Class 42
・ British Rail Class 421
・ British Rail Class 423
・ British Rail Class 424
・ British Rail Class 43
・ British Rail Class 43 (HST)
・ British Rail Class 43 (Warship Class)
・ British Rail Class 432
・ British Rail Class 438
・ British Rail Class 44
・ British Rail Class 442
・ British Rail Class 444
・ British Rail Class 447
・ British Rail Class 45
・ British Rail Class 450


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British Rail Class 42 : ウィキペディア英語版
British Rail Class 42

British Railways' (BR) Type 4 ''Warship'' class diesel-hydraulic locomotives were introduced in 1958. It was apparent at that time that the largest centre of expertise on diesel-hydraulic locomotives was in Germany. The Western Region of British Railways negotiated a licence with German manufacturers to scale down the German Federal Railway's "V200" design to suit the smaller loading gauge of the British network, and to allow British manufacturers to construct the new design. The resultant design bears a close resemblance both cosmetically and in the engineering employed. They were divided into two batches: those built at BR's Swindon works were numbered in the series D800 to D832 and from D866 to D870, had a maximum tractive effort of and eventually became British Rail Class 42. 33 others, D833–865, were constructed by the North British Locomotive Company and became British Rail Class 43. They were allocated to Bristol Bath Road, Plymouth Laira, Newton Abbot and Old Oak Common.
Two Class 42s are preserved, D821 and D832 being the only survivors.
== Overview ==

The Western Region of British Railways had decided upon hydraulic transmission with lightweight alloy construction for its new diesel locomotives to replace "King" and "Castle" class steam locomotives. This was partly because of the stiff gradients between Exeter and Plymouth on the Exeter to Plymouth line: to save fuel compared with hauling the additional weight of the locomotive up these gradients and allow an extra revenue-earning passenger coach to be added to the train.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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