Invention and Engineering

4-4-4-4

A 4-4-4-4 steam locomotive, in the Whyte notation for describing locomotive wheel arrangements, has a four-wheel leading truck, two sets of four driving wheels, and a four-wheel trailing truck. While it would be possible to make an articulated locomotive of this arrangement, the only 4-4-4-4s ever built were duplex locomotives—with two sets of cylinders driving two sets of driven wheels in one rigid frame, essentially a 4-8-4 with divided drive.

Also on this shelf

See also

• ▸Bradyll (locomotive)
• ▸Jerry Weiss (artist)
• ▸JNR Class D50

Uncatalogued shelf

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