South African Class NG G16 2-6-2+2-6-2

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The South African Railways Class NG G16 2-6-2+2-6-2 is a narrow gauge steam locomotive class.

No. NG113 at Sandstone Estates in April 2006

Cockerill-built no. NG86, still inscribed NG/G13, c. 1937

Beyer, Peacock-built no. NG128, c. 1951

Beyer, Peacock-built no. TC11 for Tsumeb Copper, possibly SAR no. NG142, c 1958

Garratt locomotive

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A Garratt locomotive is a type of steam locomotive invented by British engineer Herbert William Garratt that is articulated into three parts. Its boiler, firebox, and cab are mounted on a centre frame or "bridge". The two other parts, one at each end, have a pivot to support the central frame; they consist of a steam engine unit – with driving wheels, trailing wheels, valve gear, and cylinders, and above it, fuel and/or water storage.

South African Railways 2 ft (610 mm) gauge SAR NGG 16 Class Garratt, preserved in operating condition on the Welsh Highland Railway

Beyer-Garratt locomotive William Francis at the Garratt 100 festival

This works drawing of K1, the first Garratt built, shows how the boiler and firebox are not inhibited by the running gear.

South African Union Garratt