USRA 2-6-6-2 [SEP] designer
USRA 2-6-6-2
The USRA 2-6-6-2 was a standardized design of 2-6-6-2 Mallet locomotives developed by the United States Railroad Administration during World War I.
Design.
The USRA 2-6-6-2 locomotive was a Mallet, or compound articulated type, having both low-pressure and high-pressure cylinders. The smaller high-pressure cylinders powered the rear set of driving wheels, and the larger low-pressure cylinders powered the
20 USRA Heavy Pacifics were built.
Steam locomotive types USRA Light 4-8-2 "Mountain".
47 of the USRA Light Mountain type were built.
Steam locomotive types USRA Heavy 4-8-2 "Mountain".
15 USRA Heavy Mountains were constructed.
Steam locomotive types 2-6-6-2.
30 of the USRA 2-6-6-2 type were built.
Steam locomotive types 2-8-8-2.
106 of the USRA 2-