Reading Company C1a Class

P&RR C1a class 4-4-4 Reading Type and P7sa Class 4-4-2 Atlantic Type locomotives
Reading No. 110, as built
Type and origin Power type Steam Builder Reading Company Build date 1915 Total produced 4 Rebuild date 1916
Specifications Configuration: ​  •  Whyte 4-4-4 Gauge 4 ft 8+1⁄2 in (1,435 mm) Driver dia. 6 ft 8 in (2.032 m) Loco weight 230,800 lb (104,700 kg) Fuel type Coal Boiler pressure 240 psi (1.65 MPa) Cylinders Two, outside Cylinder size 23.5 in × 26 in (597 mm × 660 mm)
Performance figures Tractive effort 36,604 lbf (162.82 kN)
Career Retired 1940-1949 Scrapped 1941-1949 Disposition All scrapped by 1949

The Reading Company C1a Class were a type of 4-4-4 steam locomotive 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 from 1915-1916, 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 they remained as Rebuilt 4-4-2 Atlantic Type locomotives from 1916 to the 1940’s . All 4 locomotives pulled passenger trains and some freight trains as larger and powerful steam locomotives were built in the 1920’s and 1930’s and 1940’s took over pulling passenger trains and all 4 locomotives were replaced by 1940 and 1949 and scrapped from 1941-1949 . ^[1]

References

1. "1915 Reading Company Locomotive 110". www.catskillarchive.com. Retrieved 2024-09-25.