For the first time, the car body was of an all-welded low-alloy high tensile (LAHT) steel construction. Cars 1803–1852 were renumbered 2950–2999 in 1970.Īs the first series of post-war subway cars, the R10s introduced many innovations. The R10s were originally numbered 1803–18–3349. Two cars have been preserved, while the rest were scrapped. The remaining R10s were replaced by the R68s and R68As and last ran on October 29, 1989. Some R10s were replaced by the R46s in the late 1970s the remaining cars, despite having low reliability rates, outlasted several newer car classes. Various modifications were made over the years to the R10 fleet, and about 110 cars were lightly overhauled in 1984–1986. The first R10s entered service on November 20, 1948. The R10s introduced many innovations, including an all-welded low-alloy high tensile (LAHT) steel construction, dynamic braking, improved propulsion, and various cosmetic features. Two versions were manufactured: Westinghouse (WH)-powered cars and General Electric (GE)-powered cars. A total of 400 cars were built, arranged as single units. They were built by the American Car and Foundry Company from 1948 to 1949 for the IND/ BMT B Division. The R10 was the first series of post-war New York City Subway cars. All four axles motorized.Įdison B4H (32 Volt) battery with 24 cells.Ĥ ft 8 + 1⁄ 2 in ( 1,435 mm) standard gauge Westinghouse cars: WH ABS type UP-631-A switch group, with XM-179 master controller, using Westinghouse 1447-A motors (100 hp (75 kW) each). General Electric cars: GE PCM type 17KG116A switch group, with 17KC76A1 master controller, using GE 1240-A3 motors (100 hp or 75 kW each).
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