|
The WAGR W class is a class of narrow gauge steam locomotives operated by the Western Australian Government Railways (WAGR) and various heritage railways, and also, in slightly modified form, by the Silverton Tramway Co Ltd. ==Engineering Background== The class was first proposed by Chief Mechanical Engineer Fred Mills in 1947. However, the death of Mills in 1949 put a hold on the project, with his successor, Clarke, taking up the project on his appointment later that year. Mills had requested Beyer, Peacock and Company to reserve capacity for their construction when the design was first proposed, however, by the time Clarke took over, Beyer, Peacock & Co. had identified a number of possible problems with the design. This led to a meeting in the UK in 1950, the outcome of which was a substantial redesign of the locomotive. The resultant locomotive included many proprietary boiler and ancillary fittings, as well as parts interchangeability. The firebox was substantially altered to take into account the properties of Collie coal. This included a combustion chamber, thermic syphons and arch bar tubes. The running gear is based heavily on Beyer, Peacock & Co.'s Standard Light Garratt, which was built for the South Australian Railways as its 400 class Garratt. The first 40 were delivered partially erected, whilst the final 20 were fully assembled prior to shipping. The last 20 had larger tenders, capable of holding an additional . All were delivered between April 1951 and June 1952.〔 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「WAGR W class」の詳細全文を読む スポンサード リンク
|