The EMD SD50 is a 3,500-horsepower (2,610 kW) diesel-electric locomotive built by General Motors Electro-Motive Division. It was introduced in May 1981 as part of EMD's "50 Series"; production ceased in January 1986.

2024年12月16日 · As Greg McDonnell notes in his book, "Locomotives: The Modern Diesel & Electric Reference (Second Edition)," the '50 was essentially a transition model. The standard production SD50 was cataloged only between November, 1984-May, 1985 and subsequently replaced by the SD60, equipped with EMD's latest 710 prime mover.

The EMD, Electro Motive Division, SD50 is a 3,500/3,600 hp, six-axle, diesel locomotive built between 1980–1987. There were 427 units built. Many are still in service, albeit rebuilt or downgraded. The EMD SD50 was originally designed to be a successor to the EMD SD40 line, but it actually had...

The Electromotive Division SD50 is a 6 axle, 3,500 HP diesel-electric locomotive built by EMD from 1981 to 1986. It's 16 cylinder 645F3B engine could be rated between 3,300 HP and 3,500 HP. It was the last engine to use the 645 engine, the …

The EMD (Electro Motive Division) SD50 is a type of 3,500hp (or 3,600hp in some cases) six-axle diesel locomotive built from 1980 to 1986, but didn't officially begin production until 1984 after receiving full order placements in 1983. 487 were built for a handful of Class 1 railroads, most...

Diesel Locomotives, The First 50 Years by Louis A. Marre The Second Diesel Spotter's Guide, by Jerry A. Pinkepank "Early Diesel and Electric Locomotives," Rail Heritage Publications

The General Motors Model SD50 diesel-electric locomotive, Fig. 1-1, is equipped with a turbocharged 16 cylinder diesel engine which drives the main generator. Electrical power from the main generator is distributed to the traction motors through the …

The EMD SD50 is a 3,500-horsepower (2,610 kW) diesel-electric locomotive built by General Motors Electro-Motive Division. It was introduced in May 1981 as part of EMD's "50 Series"; production ceased in January 1986. The SD50 was a transitional model between EMD's Dash 2 series which was produced throughout the 1970s and the microprocessor ...

The SD50 was an interim locomotive design, a step up in performance and efficiency from the SD40-2 but not quite as good as the SD60. Conrail purchased a total of 135 units between 1983 and 1986, making them the second largest owner of the model next to …

EMD introduced the SD-50 in the early 1980s with a 16 cylinder, 3500 h.p. engine to attain the power that they had early gotten from a 20 cylinder locomotive. The new, longer frame allowed the dynamic brake resistors to be relocated to a cooler …