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| factorofadhesion = | trainheating = | locobrakes = | locobrakeforce = | trainbrakes = | safety = | operator = Natal Government Railways South African Railways | operatorclass = NGR Class B SAR Class 1A | powerclass = | numinclass = 21 | fleetnumbers = NGR 13-33 SAR 1289-1309 | officialname = | nicknames = | axleloadclass = | locale = | deliverydate = 1910 | firstrundate = 1910 | lastrundate = | retiredate = | withdrawndate = 1974 | preservedunits = | restoredate = | scrapdate = | currentowner = | disposition = | notes = }} The South African Railways Class 1A 4-8-0 of 1910 was a steam locomotive from the pre-Union era in the Natal Colony. In 1910 the Natal Government Railways placed twenty-one Improved Class B tender locomotives in service. In 1912, when these locomotives were assimilated into the South African Railways, they were renumbered and classified as Class 1A.〔 ==Manufacturer== By 1909 more locomotives were required for goods operation on the lower sections of the Natal mainline and a further twenty-one locomotives of the design were ordered by the Natal Government Railways (NGR). They were delivered by the North British Locomotive Company (NBL) and placed in service in 1910, numbered in the range from 13 to 33. Since they incorporated various improvements, they became known as the Class Improved Hendrie B.〔〔North British Locomotive Company works list, compiled by Austrian locomotive historian Bernhard Schmeiser〕〔South African Railways and Harbours Locomotive Diagram Book, 2’0” & 3’6” Gauge Steam Locomotives, 15 August 1941, as amended〕 Like their predecessors, they had Belpaire fireboxes with combustion chambers and Walschaerts valve gear. Their boilers had been raised by , raising the boiler pitch to to give a better rake on the sides of the ash pan. They were built with Hendrie’s steam reversers and, like the earlier Class B Hendrie B locomotives, all but one used slide valves. The exception was the last locomotive, number 33, which was an experimental locomotive equipped with piston valves.〔 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 1A 4-8-0」の詳細全文を読む スポンサード リンク
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