 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.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.