South African Class GF 4-6-2+2-6-4
The South African Railways Class GF 4-6-2+2-6-4 of 1927 was an articulated steam locomotive.
No. 2427 at Mason's Mill, 6 July 1962
Gf 2401
Col F.R. Collins DSO
Gf
Under the Whyte notation for the classification of steam locomotives by wheel arrangement, a 4-6-2+2-6-4 is a Garratt or Union Garratt articulated locomotive using a pair of 4-6-2 engine units back to back, with the boiler and cab suspended between them. The 4-6-2 wheel arrangement of each engine unit has four leading wheels on two axles, usually in a leading bogie, six powered and coupled driving wheels on three axles, and two trailing wheels on one axle, usually in a trailing truck.
SAR Class GF, the first 4-6-2+2-6-4 Double Pacific
NZR G class
SAR Class GF
Class GH Union Garratt, c. 1930