4-6-2+2-6-4

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A 4-6-2+2-6-4, in the Whyte notation for the classification of steam locomotives by wheel arrangement, is a Garratt articulated locomotive. The wheel arrangement is effectively two 4-6-2 "Pacific" locomotives operating back-to-back. This arrangement is thus referred to as a "Double Pacific."

The double Pacific type was fairly common for Garratt locomotives, especially those intended for faster passenger service. The first appear to have been 37 locomotives of 3 ft 6 in gauge built by Hanomag of Hanover, Germany in 1927 for the South African Railways,^[1] while the first built by Beyer Peacock (the owner of the Garratt patent) were three G class locomotives constructed for the New Zealand Government Railways in 1928.^[2]

[edit] References

1. ^ Hamilton, Gavin (1998). Garratt locomotives from other builders. The Garratt Locomotive.
2. ^ Hamilton, Gavin (1998). Garratt Locomotives produced by Beyer Peacock. The Garratt Locomotive.

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