The C1a Class were a type of
4-4-4
Under the Whyte notation for the classification of steam locomotives, 4-4-4 represents the wheel arrangement of four leading wheels on two axles, four powered and coupled driving wheels on two axles, and four trailing wheels on two axles. In ...
steam locomotive
A steam locomotive is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam. It is fuelled by burning combustible material (usually coal, oil or, rarely, wood) to heat water in the locomot ...
built for the
Philadelphia and Reading Railway in 1915. Four locomotives were built, road numbers #110-113. They used front and rear trucks that were effectively identical. During a year of operation, they proved to be quite unstable; after that year, they were rebuilt to
4-4-2 "Atlantic" locomotives, reclassified as P7sa, and renumbered #350-353.
Steam locomotives of the United States
4-4-4 locomotives
Philadelphia and Reading Railroad locomotives
Railway locomotives introduced in 1915
Standard gauge locomotives of the United States
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