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He also borrowed a 'single-wheeler' from the Great Eastern Railway and, in 1868, designed two versions of a 2-2-2 arrangement with 7 ft 1 in (2.159 m) driving wheels. [ 3 ] The outcome in 1870 was a locomotive with 8 ft 1 in (2,460 mm) driving wheels, designed specifically for high-speed expresses between York and London .
The cylinder is the power-producing element of the steam engine powering a steam locomotive. The cylinder is made pressure-tight with end covers and a piston; a valve distributes the steam to the ends of the cylinder. Cylinders were initially cast iron, but later made of steel.
The attraction of the 'single' (4-2-2 or otherwise) was that, thanks to the 'gearing' effect of the large single driving wheels, a locomotive could obtain high speeds while the operating speed of the engine's pistons and valve gear remained relatively low.
[5] [7]: 18 Early American locomotives had bar frames, made from steel bar; in the 20th century they usually had cast steel frames or, in the final decades of steam locomotive design, a cast steel locomotive bed – a one-piece steel casting for the entire locomotive frame, cylinders, valve chests, steam pipes, and smokebox saddle, all as a ...
The テホニ (Tehoni) class was a class of single-cylinder 4-6-0 locomotives for mainline use built by the Baldwin Locomotive Works and the Brooks Locomotive Works of the United States between 1906 and 1909, originally for the Gyeongbu Railway, and later operated by the Chosen Government Railway. [1]
The type were the first locomotives to use outside cylinders and also the first outside and inside frames, though the later was not appreciated at the time and only adopted some ten years later. [14] The combination of outside frames on a short 2-2-0 wheelbase with unbalanced driving wheels led to an oscillating motion and led to the nickname ...
The S1 class was the largest rigid frame passenger steam locomotive ever built. [1] The streamlined Art Deco styled shell of the locomotive was designed by Raymond Loewy. [1] [2] [3] The S1 had a unique 6-4-4-6 wheel arrangement, meaning that it had two pairs of cylinders, each driving two pairs of driving wheels. To achieve stability at fast ...
Caledonian Railway Single No. 123 is a preserved Scottish steam locomotive. The unique 4-2-2 was built by Neilson and Company in 1886, works No. 3553, as an exhibition locomotive. In 1914 it was placed on the Caledonian Railway duplicate list, and renumbered 1123.