Under the Whyte notation for the classification of steam locomotives, 4-8-4 represents the wheel arrangement of four leading wheels on two axles, eight powered and coupled driving wheels on four axles and four trailing wheels on two axles. The type was first used by the Northern Pacific Railway, and initially named the Northern Pacific, but railfans and railroad employees have shortened the name since its introduction. It is most-commonly known as a Northern.
A Garratt locomotive is a type of articulated 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.
The C38 class was a class of steam locomotive built for the New South Wales Government Railways in Australia.
A locomotive booster for steam locomotives is a small supplementary two-cylinder steam engine back-gear-connected to the trailing truck axle on the locomotive or one of the trucks on the tender. It was invented in 1918 by Howard L. Ingersoll, assistant to the president of the New York Central Railroad.
South Australian Railways (SAR) was the statutory corporation through which the Government of South Australia built and operated railways in South Australia from 1854 until March 1978, when its non-urban railways were incorporated into Australian National, and its Adelaide urban lines were transferred to the State Transport Authority.
The Victorian Railways X class was a mainline goods locomotive of the 2-8-2 'Mikado' type operated by the Victorian Railways (VR) between 1929 and 1960. They were the most powerful goods locomotive on the VR, aside from the single H class, H220, which was confined to the North East line, until the advent of diesel-electric traction, and operated over the key Bendigo, Wodonga, and Gippsland mainlines.
The South Australian Railways 520 class, also known as "The Whispering Giants", is a class of streamliner 4-8-4 'Northern' type steam locomotive operated by the former South Australian Railways. The 520 class is one of the fastest Australian-built steam locomotives, with engine 520 holding a verified speed record of over 78mph on the Port Pirie line on the 10th of November, 1943.
Gauge conversion is the changing of one railway track gauge to another.
Under the Whyte notation for the classification of steam locomotives by wheel arrangement, a 4-8-2+2-8-4 is a Garratt articulated locomotive consisting of a pair of 4-8-2 engine units back to back, with the boiler and cab suspended between them. The 4-8-2 wheel arrangement has four leading wheels on two axles, usually in a leading bogie, eight powered and coupled driving wheels on four axles and two trailing wheels on one axle, usually in a trailing truck. Since the 4-8-2 type is generally known as a Mountain, the corresponding Garratt type is usually known as a Double Mountain.
The New South Wales D57 class was a class of 4-8-2 steam locomotives built by Clyde Engineering for the New South Wales Government Railways in Australia. The tenders were built by Mort's Dock & Engineering Company.
The C35 class was a class of steam locomotives built by Eveleigh Railway Workshops between 1914 and 1923 for the New South Wales Government Railways in Australia. Despite their elegant, somewhat English looking appearance, they suffered a long period of teething troubles and were poor performers, especially on long climbs.
The C30 class is a class of steam locomotives built by Beyer, Peacock & Company and Eveleigh Railway Workshops for the New South Wales Government Railways (NSWGR) of Australia.
The New South Wales AD60 class were Beyer-Garratt patent articulated four-cylinder, simple, non-condensing, coal-fired superheated, 4-8-4+4-8-4 heavy goods steam locomotives built by Beyer, Peacock & Company for the New South Wales Government Railways in Australia.
The D58 class was a class of steam locomotives built by the New South Wales Government Railways in Australia. They were built with the 4-8-2 wheel arrangement.
The South African Railways Class 21 2-10-4 of 1937 was a class of steam locomotives used in South Africa.
The South Australian Railways 600 class was a class of 4-6-2 steam locomotives operated by the South Australian Railways.
The South African Railways Class MC1 2-6-6-0 of 1914 was a steam locomotive.
The South African Railways Class MH 2-6-6-2 of 1915 was an articulated Mallet-design steam locomotive.
The South Australian Railways 700 class was a class of 2-8-2 steam locomotives operated by the South Australian Railways.
The South Australian Railways 710 class was a class of 2-8-2 steam locomotives operated by the South Australian Railways.
