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A Crocodile of the Swiss Federal Railways.Each set of 6 driving wheels is driven by a jackshaft between the driving wheels, gear-driven by a pair of traction motors. A jackshaft is an intermediate shaft used to transfer power from a powered shaft such as the output shaft of an engine or motor to driven shafts such as the drive axles of a locomotive.
The early ones used sprocket chain drive but later versions had spur gears. The Avonside Engine Company produced a small number of narrow gauge geared steam locomotives for sugar cane plantations in Natal. These were similar in design to Heislers. The Kitson-Still locomotive used different ends of the same cylinders for steam or diesel ...
Power transmission was through a chain drive and, in their first deployment in a transport application, André Citroën's chevron gears. [2] Three sets of brakes operated: on the vertical driving wheels; on the horizontal wheels; and directly onto the centre rail with a horizontally opposed pair of brake shoes. [2]
Drive shafts are another common method used to move mechanical power around that is sometimes evaluated in comparison to chain drive; in particular belt drive vs chain drive vs shaft drive is a key design decision for most motorcycles. Drive shafts tend to be tougher and more reliable than chain drive, but the bevel gears have far more friction ...
The Fate-Root-Heath patent application filed in 1925 shows a far more conventional 4-speed transmission and reverse gears driving the jackshaft and final chain drive to the 2 driving axles. [ 5 ] All early Plymouth locomotives were powered by gasoline -burning internal combustion engines , but in 1927 the first diesel was produced.
Hornsby chain tractor (working scale model) Although the first traction engines employed a chain drive, it is more typical for large gears to be used to transfer the drive from the crankshaft to the rear axle. The machines typically have two large powered wheels at the back and two smaller wheels for steering at the front.
The Bulleid chain-driven valve gear is a type of steam locomotive valve gear designed by Oliver Bulleid during the Second World War for use on his Pacific (4-6-2) designs. It was peculiar to the Southern Railway in Britain , and borrowed from motor-vehicle practice in an attempt to create a compact and efficient design with a minimum of service ...
Motor Rail was a British locomotive-building company, originally based in Lewes, Sussex, they moved in 1916 to Bedford. Loco manufacture ceased in 1987, and the business line sold to Alan Keef Ltd of Ross-on-Wye , who continue to provide spares and have built several locomotives to Motor Rail designs.