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GWR 5100 Class : ウィキペディア英語版 | GWR 5100 Class
The Great Western Railway (GWR) GWR 5100 Class (known as the 3100 class between 1912 and 1927) was a class of 2-6-2T side tank steam locomotive. It was the first of a series of broadly similar classes used principally for suburban passenger services. ==History==
The class was developed from one of George Jackson Churchward's pioneer designs – No 99 – and a number of derivative classes were built from 1906 to 1950. The development is somewhat convoluted to follow, because of various renumberings and gaps in the number series as listed below.〔 No. 99 was built in 1903 and given an extended trial over the ensuing two years. Fitted with the standard number 2 boiler running at , flat topped tanks and driving wheels of in diameter, it was the forerunner of 289 similar locomotives that were to follow. 39 more examples were built to this initial design. This production batch differed from the prototype only in that the tank tops were sloping to aid visibility and the cab sides were incorporated into the tanks. The running numbers of this batch were 3111 to 3149 and the prototype was renumbered 3100 in 1912. They received enlarged coal bunkers. In 1927, after some improvements to weight distribution, the class was renumbered 5100 and 5111 to 5149. None of the 5100 class have been preserved.
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 5100 Class」の詳細全文を読む
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