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The main components of a typical steam locomotive. Click or hover over numbers to see names. The diagram, which is not to scale, is a composite of various designs in the late steam era. Some components shown are not the same as, or are not present, on some locomotives – for example, on smaller or articulated types.
Especially in steam days, wheel arrangement was an important attribute of a locomotive because there were many different types of layout adopted, each wheel being optimised for a different use (often with only some being actually "driven"). Modern diesel and electric locomotives are much more uniform, usually with all axles driven.
No description. Template parameters Parameter Description Type Status name name The article title, e.g. 4-4-0 (The most commonly used name of the wheel arrangement, in brackets) Example 4-8-2 (Mountain) Line optional image (schematic) image Wheel arrangement schematic File optional image size (schematic) imagesize image_size no description Unknown optional alt alt Alternative text for the ...
Schematic of a later steam locomotive firebox boiler, with firebox to the left and indicatively showing two superheater elements to the right. These elements receive saturated (wet) steam from the boiler, add more heat to the steam in the superheater elements (hence the term "super" heated) which dries the steam, then discharges the superheated ...
Diagram showing lap and lead and their relation to valve travel. When on the move, a steam locomotive requires steam to enter the cylinder at precise times relative to the piston's position. [3] This entails controlling the admission and exhaust of steam to and from the cylinders with a valve linked to the motion of the piston. [3]
The introduction of the 4-6-2 design in 1901 has been described as "a veritable milestone in locomotive progress". [3] On many railways worldwide, Pacific steam locomotives provided the motive power for express passenger trains throughout much of the early to mid-20th century, before either being superseded by larger types in the late 1940s and 1950s, or replaced by electric or diesel-electric ...
LNER Class A3 4472 Flying Scotsman was the first steam locomotive to officially reach 100 mph (160 km/h), on 30 November 1934. 41 018 climbing the Schiefe Ebene with 01 1066 as pusher locomotive (video 34.4 MB) A steam locomotive is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam.
The Class C62 (C62形) is a type of 4-6-4 steam locomotive designed by Hideo Shima and built by the Japanese National Railways (JNR). The "C" classification indicates three sets of driving wheels. The C62 was rebuilt with the boilers of older Class D52 2-8-2 locomotives.