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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 Victorian Railways H class ： ウィキペディア英語版 Victorian Railways H class The H class was an express passenger steam locomotive that ran on Victorian Railways from 1941 to 1958. Intended to eliminate the use of double heading A2 class locomotives on ''Overland'' services on the steeply graded Western line to Adelaide, wartime restrictions led to only one locomotive being built. Nicknamed "Heavy Harry", H 220 was the largest locomotive ever built in Australia and the largest non-articulated steam locomotive to run on Australian railways. ==History== By 1923, the A2 class 4-6-0 locomotives, which dated back to 1907, were frequently double-heading on interstate expresses to Adelaide and Sydney as increasing traffic saw loads exceed the eight car maximum of a single A2 on these services. The Victorian Railways Commissioners recommended considerably more powerful locomotives to haul trains of up to eleven cars unassisted over the ruling gradients on these lines. The S class 4-6-2 'Pacifics' displaced the A2 from North East line express services from 1928 onwards and allowed a faster timetable to be introduced. However a Pacific-type locomotive was not particularly well suited to the Western line. The section between Melbourne and Ballarat had sharply curved, steep inclines, the most notorious of which was the , 1 in 48 (2.08&) ruling gradient of the Ingliston Bank.〔(【引用サイトリンク】ARHS Railway Museum: What to see – H220 )〕 As early as 1923 VR locomotive designers were considering 4-8-2 'Mountain'-type locomotives for this purpose, along with the use of a third cylinder to allow increased power to be achieved without breaching the loading gauge.〔 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「Victorian Railways H class」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.