| 翻訳と辞書 |
SR Z class
The SR Z class was an 0-8-0T 3-cylinder tank engine designed by Richard Maunsell and intended for heavy shunting on the Southern Railway, the first eight entering into service in 1929. It was a successful design and would have been built in greater numbers, but an order for a further ten was cancelled in 1930 due to the reduction in freight traffic as a result of the Great Depression.
==Background==
The newly amalgamated Southern Railway needed a group of powerful shunting tank locomotives to work in its marshalling yards around London and on freight transfers between them. Robert Urie's G16 class 4-8-0 performed this task well, and further examples were on order in 1922, but Richard Maunsell considered the firebox to be too large and the superheater an unnecessary expense on such locomotives. He therefore cancelled the order in favour of a new design.〔Bradley, D.L. (1975). ''Locomotives of the Southern Railway Part 1''. London: Railway Correspondence and Travel Society. ISBN 0-901115-30-4. pp.43-7.〕
Due to the requirement for heavy shunting, the design was provided with an 0-8-0 wheel arrangement to increase traction, whilst enabling the locomotives to negotiate tight curves prevalent in goods yards.〔 Another requirement was for the locomotive to be able to maintain power after long periods of standing idle, as freight marshalling was an intermittent duty. A water capacity was also required to reduce the need for regular watering.
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「SR Z 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.
|
|