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The South African Railways Class 18 2-10-2 of 1927 is a steam locomotive. In December 1927 and January 1928 the South African Railways placed two Class 18 steam locomotives with a 2-10-2 Santa Fe type wheel arrangement in service.〔South African Railways and Harbours Locomotive Diagram Book, 2’0” & 3’6” Gauge Steam Locomotives, 15 August 1941, as amended〕 ==Manufacturer== The Class 18 2-10-2 Santa Fe type steam locomotive was designed by Colonel F.R. Collins, Chief Mechanical Engineer (CME) of the South African Railways (SAR) from 1922 to 1929, and built by Henschel and Son in Germany who delivered two locomotives in 1927 and 1928, numbered 1360 and 1361. They were very powerful three-cylinder locomotives, with their two outer cylinders using Walschaerts valve gear and the inner cylinder using Gresley conjugated valve gear that was actuated by the motions of the outer cylinders.〔〔Henschel-Lieferliste (Henschel & Son works list), compiled by Dietmar Stresow〕 When delivered, the third cylinder was clearly visible, but plating that was subsequently added beneath the smokebox hid it from view. These were the most powerful non-articulated steam locomotives to see service on the SAR, with a tractive effort of at 75% boiler pressure and capable of hauling loads of over the ruling gradient of 1 in 100 on the Witbank-Apex section.〔〔South African Railways & Harbours Photo Journal, Vol. 1, no 8, pp1-3, by Les Pivnic〕 Contemporary Henschel publicity appropriately referred to them as the "Henschel Giants". They were larger in most respects than Deutsche Reichsbahn’s new Standard gauge Class 44 three cylinder 2-10-0 locomotives. Although their all-up locomotive weight was almost the same, when considering the fact that the SAR’s Cape gauge Class 18 had shorter axles and frame strethers, saving weight that could then be built into other items such as the firebox, the Class 18 was the larger locomotive.〔 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 18 2-10-2」の詳細全文を読む スポンサード リンク
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