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GWR 6800 Class : ウィキペディア英語版 | GWR 6800 Class
The Great Western Railway (GWR) 6800 Class or Grange Class was a mixed traffic class of 4-6-0 steam locomotive, built to replace the GWR 4300 Class 2-6-0. There were 80 in the class, all built at the Swindon works, using some reconditioned parts from withdrawn 4300 Class locomotives . ==Background== The GWR locomotive standardisation policy pursued by G.J. Churchward envisaged a range of locomotive classes which would be suitable for the majority of duties, and yet which would share a small number of standard components. Amongst the designs suggested in 1901 was a 4-6-0 with diameter driving wheels, and the Standard No. 1 boiler. Although planned in 1901, none were built during Churchward’s lifetime. C.B. Collett, (Churchward’s successor at Swindon Works) rather introduced the Hall class with diameter driving wheels. The 4300 Class of 2-6-0 tender locomotives had been introduced on the GWR for mixed traffic duties in 1911, and by 1932 there were 342 in service. However, by the mid 1930s some of the earlier examples were in need of attention and the class as a whole was struggling with some of the duties expected of them. Collettt therefore revived the Churchward proposal, but modified the design to include a cab and controls to the current style. Between 1936 and 1939, one hundred 4300 Class were taken out of service and replaced by new 4-6-0 locomotives, eighty of which were of the 6800 (or ''Grange'') class, whilst the remaining 20 were of the 7800 (or ''Manor'') class. It had been intended to replace all of the 4300 Class in this way, but the Second World War stopped the programme.〔〔
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「GWR 6800 Class」の詳細全文を読む
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