GE C36-7

The GE C36-7 emerged in 1978 as General Electric's answer to growing demand for higher-horsepower six-axle freight locomotives. Developed as a successor to the earlier U36C model, the C36-7 represented GE's continued refinement of its seven series platform, which had itself been introduced in the mid-1970s as a comprehensive update to the long-running Universal series. The locomotive found customers across multiple continents over the course of its production run, which extended from 1978 through 1987 in North America, with licensed and contracted production continuing somewhat beyond that period in other countries. Domestically, the C36-7 was acquired by several major American freight railroads during a period of significant industry consolidation and motive power renewal. Among the most notable early customers was Missouri Pacific, which accumulated a substantial fleet before its eventual absorption into Union Pacific. The locomotive's service life in the United States proved lengthy for many units, and a notable chapter in the type's history unfolded in 2003 when Union Pacific exported approximately 58 former Missouri Pacific C36-7s to Eesti Raudtee in Estonia, giving the design a second career in European freight service. Production of the type also took place outside the United States, with GE do Brasil assembling 15 units for Ferrocarriles Nacionales de México, and A Goninan and Company constructing a small number of units in Australia for Hamersley Iron's heavy haul iron ore operations. By far the largest single customer for the C36-7 design was the People's Republic of China, which acquired a substantial number of units designated as the China Railways ND5. This export order represented a major commercial achievement for GE and helped establish the American manufacturer's presence in the Chinese market at a time when that country's railway network was undergoing significant expansion. The roughly 599 units built across the full production run made the C36-7 one of the more widely distributed six-axle road locomotives of its era, and survivors remained in active freight service in various countries well into the twenty-first century.

The C36-7 is a six-axle diesel-electric locomotive riding on a C-C wheel arrangement, with each of its two three-axle trucks powered by individual traction motors supplied with direct current from a main generator. Motive power comes from the GE FDL16, a sixteen-cylinder turbocharged diesel engine that in its standard configuration produces 3,600 horsepower, though certain variants built to particular customer specifications were reportedly rated at 3,750 horsepower. The FDL series engine was a proven and well-regarded prime mover that GE employed across much of its locomotive product line during this period, valued for its reliability in heavy freight service and its relatively straightforward maintenance characteristics. Externally the C36-7 bears a close family resemblance to the contemporary C30-7, sharing the same general carbody proportions and hood configuration. The two types can be distinguished primarily by the larger air intake openings located beneath the radiator section at the rear of the hood, a feature necessitated by the higher output engine's greater cooling requirements. On units produced later in the production run, the resistor grids associated with the dynamic braking system are enclosed within a raised housing positioned immediately behind the cab, a detail that further aids identification and reflects incremental refinements GE made to the design as production continued through the 1980s.

Models by: Rapido Trains