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Two Mamod SE3 twin-cylinder steam engines from 1969. The engine on the left is the Griffin & George version, and the version on the right displays push button whistle and screw-on crank webs. A 1949 Mamod SE2 engine showing new pressed steel engine frame and superheated boiler. Mamod Minor engines from 1949 and 1954.
The London and North Western Railway (LNWR) Webb Coal Tank is a class of 0-6-2T steam locomotive. They were called "Coal Tanks" because they were a side tank version of Webb's standard LNWR 17in Coal Engine , an 0-6-0 tender engine for slow freight trains.
A steam engine is a heat engine that performs mechanical work using steam as its working fluid. The steam engine uses the force produced by steam pressure to push a piston back and forth inside a cylinder. This pushing force can be transformed by a connecting rod and crank into rotational force for work.
The Traction Engine Register records the details of traction engines, steam road rollers, steam wagons, steam fire engines and portable engines that are known to survive in the United Kingdom and Irish Republic. It recorded 2,851 self moving engines and wagons, 687 portable engines (non-self moving), 160 steam fire engines existing in 2016.
The initial changes included substitution of the 'slot & tab' couplers with link and pin semi-automatic ones on the higher priced 10" freight cars and steam engine tenders. Three significantly detailed & overall scale length O gauge steam engines were introduced in the 1938 catalog: Atlantic (4-4-2), Pacific (4-6-2-) and an 0-6-0 switcher.
The Duplex and Experimental Steam Engines of the PRR; Pennsylvania Railroad S2 steam turbine "Modern Power For Today's Trains" - A promotional booklet put out by the PRR in 1949 showcasing the railroads latest motive power. Archived 2017-12-14 at the Wayback Machine "The Keystone" Magazine - Autumn 2012 Volume 45 - Number 3 - The S2 Turbine 686
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Steam locomotives consume vast quantities of water because they operate on an open cycle, expelling their steam immediately after a single use rather than recycling it in a closed loop as stationary and marine steam engines do. Water was a constant logistical problem, and condensing engines were devised for use in desert areas.