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The South African Railways Class 15A 4-8-2 of 1914 is a steam locomotive. Between 1914 and 1925 the South African Railways placed one hundred and nineteen Class 15A steam locomotives with a 4-8-2 Mountain type wheel arrangement in service, delivered in ten batches from three manufacturers. ==Manufacturers== The Class 15 and Class 15A were the final development of the plate framed 4-8-2 Mountain locomotive designed by D.A. Hendrie, Chief Mechanical Engineer (CME) of the South African Railways (SAR) from 1910 to 1922. Of the whole Hendrie Mountain family, the Class 15A proved to be his most useful and most numerous group of locomotives.〔〔 The predecessor Class 15 locomotives had one flaw, excessively long firetubes. When more were ordered, Hendrie improved the boiler by adding a combustion chamber and shortening the distance between tube plates from to in the process. These locomotives were designated Class 15A and were built in ten batches by three manufacturers. Being wartime, initial production and delivery occurred in dribs and drabs.〔 * Five were delivered by the North British Locomotive Company (NBL) in 1914, numbered in the range from 1571 to 1575.〔North British Locomotive Company works list, compiled by Austrian locomotive historian Bernhard Schmeiser〕 * Eight more were delivered by NBL, also in 1914, numbered in the range from 1781 to 1788. Like the Class 15, these first thirteen locomotives had narrow cabs, rear end running boards that curved down below their cabs and Belpaire fireboxes, but unlike the Class 15, with a combustion chamber.〔 * Ten more were delivered by NBL in 1915, numbered in the range from 1789 to 1798. While the first two batches were delivered with all coupled wheels flanged, beginning with this third batch the leading coupled wheels were flangeless to cope with the sharp curves on the Hex River Pass. These and subsequent locomotives also had rear end running boards continuing straight through underneath their cabs.〔〔 * Six more were delivered by NBL in 1916, numbered in the range from 1799 to 1804.〔 * Four more were delivered by NBL in 1917, numbered in the range from 1805 to 1808.〔 * Twenty more were delivered by NBL in 1920, numbered in the range from 1809 to 1828. These twenty and all subsequent Class 15A locomotives were delivered with wider cabs.〔 * Twenty were delivered by Beyer, Peacock and Company in 1920, numbered in the range from 1839 to 1858.〔Beyer, Peacock and Company production list, excluding Garratts, Customer List V1 04.08.02〕 * Ten more were delivered by Beyer, Peacock in 1921, numbered in the range from 1961 to 1970.〔 * Fifteen were delivered by NBL in 1921, numbered in the range from 2011 to 2025.〔 * Twenty-one were delivered by J.A. Maffei in 1925, numbered in the range from 2080 to 2100.〔〔 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 15A 4-8-2」の詳細全文を読む スポンサード リンク
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