Invention and Engineering

2-4-0

Under the Whyte notation for the classification of steam locomotives, 2-4-0 represents the wheel arrangement of two leading wheels on one axle, four powered and coupled driving wheels on two axles and no trailing wheels. In most of North America it became known as a Porter. The notation 2-4-0T indicates a tank locomotive of this wheel arrangement, on which its water and fuel is carried on board the engine itself, rather than in an attached tender. A subset is 2-4-0WT, a configuration in which the water is under the bolier in a well tank.

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See also

• ▸Airplane
• ▸Hercules
• ▸DuPont Experimental Station

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