on the Natal Government Railways (NGR) in 1904. The locomotive used saturated steam and had flat "D" type slide valves, placed above the cylinders and operated by Stephenson Link valve gear through rocker shafts. The leading wheels were mounted in a spring control bogie which was designed to overcome the problems of excessive flange wear on the coupled wheels and rail cutting on curves. Service Cape Government Railways The locomotive was placed in service on the Eastern System, working on the mainline out of East London. It proved to be very successful in service and was able to handle loads of up the steep 1 in 40 (2½%) gradient of the mainline, which began right at the end of the departure platform at East London station at the time. This compared favourably to the which the 8th Class could manage. Despite its good performance, the design was never repeated since some trouble was experienced with the firebox which, although wide, had to be shallow to be carried over the intermediate and trailing coupled wheels. Instead, Beatty decided that more powerful locomotives could be designed by using the wide and deep firebox which he had used in his Karoo Class locomotives and the Cape 10th Class therefore remained one of a kind. South African Railways When the Union of South Africa was established on 31 May 1910, the three Colonial government railways (CGR, NGR and Central South African Railways) were united under a single administration to control and administer the railways, ports and harbours of the Union. Although the South African Railways and Harbours came into existence in 1910, the actual classification and renumbering of all the rolling stock of the three constituent railways were only implemented with effect from 1 January 1912. In 1912, the Cape 10th Class was designated Class Experimental 6 and renumbered to 1244 on the South African Railways. It was withdrawn from service in 1938. References 2150 2150 2150 4-8-0 locomotives 2D locomotives Kitson locomotives Cape gauge railway locomotives Railway locomotives introduced in 1906 1906 in South Africa Scrapped locomotives