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The South African Railways Class 19A 4-8-2 of 1929 is a steam locomotive. In 1929 the South African Railways placed thirty-six Class 19A steam locomotives with a 4-8-2 Mountain type wheel arrangement in service. Five of them were later reboilered and reclassified to Class 19AR.〔South African Railways and Harbours Locomotive Diagram Book, 2’0” & 3’6” Gauge Steam Locomotives, 15 August 1941, pp21 & 21A, as amended〕 ==Manufacturer== The Class 19A 4-8-2 Mountain type steam locomotive was a later model of the successful Class 19 that was introduced a year earlier, also with Walschaerts valve gear and a bar frame. Colonel F.R. Collins, Chief Mechanical Engineer (CME) of the South African Railways (SAR) at the time, redesigned the Class 19 to achieve a lighter axle loading by reducing the wheel diameters from , reducing the cylinder diameter from and by using a slightly smaller boiler.〔〔 While the aim was to reduce the locomotive’s total weight for use on some of the more lightly laid branchlines, the actual weight saving that was achieved was a mere four tons, which could hardly have justified the cost of redesigning.〔 Thirty-six Class 19A locomotives were delivered by Swiss Locomotive and Machine Works (SLM) of Winterthur in 1929, numbered in the range from 675 to 710. 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「South African Class 19A 4-8-2」の詳細全文を読む スポンサード リンク
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