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Highland Railway River Class : ウィキペディア英語版 | Highland Railway River Class
The Highland Railway River class was a class of steam locomotive with a 4-6-0 wheel arrangement. They were designed by F. G. Smith, who had joined the Highland Railway in 1904 from the North Eastern Railway. His initial post was as manager of the Locomotive, Carriage and Wagon works at Inverness (usually referred to as Lochgorm works). When Peter Drummond departed to the Glasgow and South Western Railway at the end of 1911 Smith was appointed Chief Mechanical Engineer in his place. ==Delivery to Highland Railway==
The 'Rivers' were Smith's only design for the Highland Railway, and they were the largest and most powerful locomotives built for that company. This involved a deadweight driving axle loading of , which exceeded the maximum axle loading allowed by the company's Civil Engineer. However, Smith had taken this into account, and had designed the 'Rivers' to cause much lower 'hammer blow' upon the track than the existing Highland locomotives. When the effects of hammer blow were taken into account, the 'Rivers' put the same total weight onto the track as the previous 'Castle' Class 4-6-0s. The first two engines were delivered to Perth around the end of August 1915, when a row immediately erupted between Smith and the company's Chief Civil Engineer Alexander Newlands. Smith and Newlands had a difficult working relationship and avoided speaking to one another. It seems that Smith had not discussed the high deadweight axle loadings with Newlands, and Newlands did not raise the matter until the locomotives arrived. On delivery, the locomotives were immediately placed in a siding while the engineers checked the drawings. Once this exercise was completed Newlands banned them from the line as being too heavy for a number of bridges and out of gauge. Smith argued that the effect of hammer blow needed to be taken into account, but the company's board sided with Newlands and Smith was forced to resign.
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「Highland Railway River Class」の詳細全文を読む
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