2-4-0

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A 3 ft gauge 2-4-0 built for Central Sucre by the Vulcan Iron Works.
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A 3 ft gauge 2-4-0 built for Central Sucre by the Vulcan Iron Works.

In Whyte notation, a 2-4-0 is a railroad steam locomotive that has two leading wheels followed by two coupled driving wheels, with no trailing wheels.

The equivalent UIC classification is 1'B.

In the UK several classes of 2-4-0s were designed by James Holden for the Great Eastern Railway, including the T19, the "Humpty dumpty" and the T26.


Steam locomotive types
Single engine types
0-2-2 | 2-2-0 | 2-2-2 | 2-2-4 | 4-2-0 | 4-2-2 | 4-2-4 | 6-2-0
0-4-0 | 0-4-2 | 0-4-4 | 2-4-0 | 2-4-2 | 2-4-4 | 4-4-0 | 4-4-2 | 4-4-4
0-6-0 | 0-6-2 | 0-6-4 | 2-6-0 | 2-6-2 | 2-6-4 | 2-6-6 | 4-6-0 | 4-6-2 | 4-6-4
0-8-0 | 0-8-2 | 0-8-4 | 2-8-0 | 2-8-2 | 2-8-4 | 2-8-6 | 4-8-0 | 4-8-2 | 4-8-4 | 4-8-6 | 6-8-6
0-10-0 | 0-10-2 | 2-10-0 | 2-10-2 | 2-10-4 | 4-10-0 | 4-10-2
0-12-0 | 2-12-0 | 2-12-2 | 2-12-4 | 4-12-2 | 4-14-4
Duplex engine types
4-4-4-4 | 6-4-4-6 | 4-4-6-4 | 4-6-4-4
Garratt (articulated) types
0-4-0+0-4-0 | 2-6-0+0-6-2 | 4-6-2+2-6-4 | 2-8-0+0-8-2 | 4-8-4+4-8-4
Mallet (articulated) types
0-4-4-0 | 0-4-4-2 | 2-4-4-2
0-6-6-0 | 2-6-6-0 | 2-6-6-2 | 2-6-6-4 | 2-6-6-6 | 2-6-8-0 | 4-6-6-2 | 4-6-6-4
0-8-8-0 | 2-8-8-0 | 2-8-8-2 | 2-8-8-4 | 4-8-8-2 | 4-8-8-4
2-10-10-2 | 2-8-8-8-2 | 2-8-8-8-4