4-6-0+0-6-4
diagram of the wheel arrangement
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In the Whyte notation for the classification of steam locomotives by wheel arrangement, the 4-6-0+0-6-4 is a Garratt articulated locomotive. The wheel arrangement is effectively two 4-6-0 locomotives operating back to back, with the boiler and cab suspended between the two power units. Each power unit has two pairs of leading wheels in a leading bogie, followed by three coupled pairs of driving wheels, with no trailing wheels. A similar wheel arrangement exists for Mallet type locomotives, but is referred to as 4-6-6-4.
Other equivalent classifications are:
- UIC classification: 2C+C2 (also known as German and Italian classifications)
- French classification: 230+032
- Turkish classification: 35+35
- Swiss classification: 3/5+3/5 up to the early 1920s, later 6/10
Overview
This was a rare wheel arrangement for Garratt locomotives, with only seven locomotives built for two customers. The first was for the metre-gauge Mogyana Railway of Brazil, with five examples built by Beyer, Peacock and Company in 1912 and 1914.[1] The other was two locomotives built for the 3-foot gauge Ferrocarril Pacifico de Colombia by Armstrong-Whitworth in 1924.[2]
Gauge | Railway | Works no. | Units | Year | Builder |
---|---|---|---|---|---|
Template:TrackGauge | Ferrocarril Pacifico de Colombia | 565-566 | 2 | 1924 | Armstrong Whitworth |
Template:TrackGauge | Mogyana Railway, Brazil | 5529-5530 | 2 | 1912 | Beyer, Peacock |
Template:TrackGauge | Mogyana Railway, Brazil | 5787-5789 | 3 | 1914 | Beyer, Peacock |
References
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