4-6-4-4

4-6-4-4

4-6-4-4

Duplex locomotive wheel arrangement

In Whyte notation, a 4-6-4-4 is a railroad steam locomotive that has four leading wheels followed by six coupled driving wheels, a second set of four driving wheels and four trailing wheels.

Other equivalent classifications are:
UIC classification: 2CB2 (also known as German classification and Italian classification)
French classification: 2322
Turkish classification: 3524
Swiss classification: 3/5+2/4 up to the early 1920s, later 5/9

The sole example of this arrangement was the PRR Q1. This locomotive was essentially a prototype in the development of the PRR Q2, a 4-4-6-4.

References


    Stub icon

    This steam locomotive-related article is a stub. You can help Wikipedia by expanding it.
    Share this article:

    This article uses material from the Wikipedia article 4-6-4-4, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.