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‘D’ 0-8-0 Locomotive class
After WhaleExplain 'Whale, George (1842—1910)' had rebuilt a number of ‘A’ classExplain '‘A’ 0-8-0 Locomotive Class' 3-cylinder simple 0-8-0 goods engines into class ‘C’Explain '‘C’ Class 0-8-0 Locomotive class' simple engines by fitting new inside cylinders and Joy’s valve gearExplain 'Joy’s Valve Gear', it was decided that their cylindersExplain 'Cylinder' were too large for their original boilersExplain 'Boiler'. Sixty three were therefore fitted with 5ft 2in diameter boilers similar to those used on the ‘Experiment’ classExplain 'Experiment 4-6-0 Locomotive Class (2)' 4-6-0 engines. In 1911 these became known as class ‘D’. View more details
Dock Tank 0-4-2T Locomotive Class
See Bissell TankExplain 'Bissell Tank 0-4-2T Locomotive Class' View more details
Dreadnought Locomotive Class
Designed by F.W. WebbExplain 'Webb, Francis William (1836—1906)', the ‘Dreadnought’ class was basically an ‘Experiment’Explain 'Experiment Locomotive Class (1)' enlarged to produce more power. The boilerExplain 'Boiler' was larger, with 176 psiExplain 'PSI (Pounds per Square Inch)' instead of 150 psi, and the valve gearExplain 'Valve Gear' was modified. In many ways the ’Dreadnought’ was the first modern Webb engine. In addition to a circular smoke boxExplain 'Smoke Box' door, tommy-bar screw couplingExplain 'Screw Coupling', it was the first engine to have the new 3in thick tyres made of steel.
‘DX’ 0-6-0 Locomotive Class
The ‘DX’ 0-6-0s were designed by John RamsbottomExplain 'Ramsbottom, John (1814—1897)', and incorporated all the usual Ramsbottom features; his own design of chimney top, safety valvesExplain 'Ramsbottom Safety-Valve' and screw reverseExplain 'Screw Reverse', horizontal smoke boxExplain 'Smoke Box' door, coupling rodsExplain 'Coupling Rods' with split ends and wedge adjustment, slotted splashersExplain 'Splasher' wooden buffer beamsExplain 'Buffer Beam' and brake blocksExplain 'Brake Blocks', no brakes on the engine and green livery lined in black. View more details
‘E’ 0-8-0 Locomotive class
The WebbExplain 'Webb, Francis William (1836—1906)' 4-cylinder class ‘B’ compound goods engines suffered with excessive weight on their leading wheels and, in an attempt to reduce this, 26 were modified from 1904 to have a leading pony truckExplain 'Pony Truck'. From 1911 these became known as class ‘E’. View more details
Eight-Coupled Locomotive
A locomotive with eight driving wheels coupled together, usually 0-8-0 or 2-8-0 wheel arrangement. View more details
Experiment Locomotive Class (1)
A series of 30 three cylinder compoundsExplain 'Three-cylinder compound' built in the 1880’s, the first of Webb’s compoundsExplain 'Webb Compound' apart from a few experimental engines. The name might be thought to have a scientific connection, as with “Problem” and “Theorem”. This class, however, was Webb’s large-scale experiment with a class of express compound locomotives, and the first engine was named accordingly.
Experiment 4-6-0 Locomotive Class (2)
Built from 1905, these were a class of 105 two cylinder simpleExplain '2-Cylinder Simple' 4-6-0’s built by George WhaleExplain 'Whale, George (1842—1910)'. Unlike the Webb “Experiments” there was nothing experimental about the class, which was a 4-6-0 development of the Whale “Precursors”. The first engine simply inherited the name of the first Webb “Experiment” after that engine was scrapped.
Extra Large Bloomer 2-2-2 Locomotive Class
In 1861 McConnellExplain 'McConnell, James Edward (1815—1883)' produced three enlarged ‘Bloomers’ at Wolverton WorksExplain 'Wolverton' . They had 7ft 6in driving wheelsExplain 'Drive Wheel' and boilersExplain 'Boiler' with various McConnell patent features. See also BloomerExplain 'Bloomer Locomotive Class', Large BloomerExplain 'Large Bloomer 2-2-2 Locomotive Class', and Small BloomerExplain 'Small Bloomer 2-2-2 Locomotive Class'
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