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EMD SD45T-2

The SD45T-2 is a model of diesel-electric locomotive built by EMD for the Southern Pacific Railroad . Like the later SD40T-2 it is colloquially nicknamed a tunnel motor . 247 to...

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The SD45T-2 is a model of diesel-electric locomotive built by EMD for the Southern Pacific Railroad. Like the later SD40T-2 it is colloquially nicknamed a tunnel motor. 247 total units (including the original EMD/SP joint-venture prototype) were produced from February 1972 to June 1975, including 84 for SP's subsidiary Cotton Belt. From April 1986 to December 1989, 126 were rebuilt and re-designated as SD45T-2R, including 24 for Cotton Belt.

The SD45T-2 is a variant of the SD45-2 that featured the "Dash 2" upgrade components such as improved electronics and high traction trucks, with the "T" denoting its cooling system modifications. The intake for radiator cooling air was moved to the walkway level and the cooling fans themselves were under the radiator cores, instead of above. Tunnel motors were built for mountainous areas in the western United States, where SP had previously encountered repeated overheating issues on their SD45s.

The later SD40T-2 looks similar to the SD45T-2. One spotting difference is the longer hood on the SD45T-2 to accommodate the V20 prime mover vs. the V16 used on the SD40T-2. The SD45T-2's cab is further forward on the frame, so there is less "front porch". This mimics the differences between the SD45-2 and the SD40-2. Another spotting difference is the SD45T-2's three fan access doors on each side above the cooling air intake, while the SD40T-2 has two.

EMD SD45T-2 vs SD40T-2 radiator fan motor access doors

Like their SD40T-2, some of SP's SD45T-2 tunnel motors were obtained by Kansas City Southern Railway, Bessemer and Lake Erie Railroad, Duluth, Missabe and Iron Range Railway, and by the Union Pacific Railroad when it merged the SP in 1996. Cotton Belt 9385 was purchased by Americana Latina Logistica and exported to Brazil.

Some SD45T-2s were rebuilt and designated to SD45T-3, SD40T-3 and SD40-2T. In addition, some locomotive leasing companies own the SD45 tunnel motor locomotives. They are scattered all over North America and are an increasingly rare sight.

Rebuilds

SD45T-2R

A partir de 1986, la Southern Pacific Transportation Company y la St. Louis Southwestern Railway (también conocida como la "Cotton Belt Route") comenzaron a reconstruir la mayoría de sus locomotoras EMD SD45T-2 en lo que se convertiría en la EMD SD45T-2R. [ 1 ] [ 2 ] [ 3 ] Ambos ferrocarriles reconstruyeron un total de 126 de sus locomotoras EMD SD45T-2 en locomotoras EMD SD45T-2R, lo que dejó un total de 121 EMD SD45T-2 sin reconstruir y todas fueron renumeradas como 6793–6832, 6834–6868 y 6869–6892. [ 1 ] [ 4 ] [ 2 ] [ 3 ]

Propietarios originales

Preservación

Referencias

  1. 1 2 Wilson, Jeff (2017). Guía de locomotoras diésel norteamericanas . Kalmbach Books. pág.  82. ISBN 978-1-62700-455-8.
  2. 1 2 Shine (1988) , pág. 117 
  3. 1 2 La era del diésel: Volumen 2 Número 3 . Withers Publishing . 1991. pág. 8. 
  4. ↑ Shippen & Shine (1999) , pág. 153 
  5. 1 2 Wilson, Jeff (2017). Guía de locomotoras diésel norteamericanas . Kalmbach Books. pág. 82. ISBN  978-1-62700-455-8.
  6. ↑ "Lista maestra de equipos ferroviarios" (PDF) . Museo Estatal del Ferrocarril de California . 10 de septiembre de 2020. Consultado el 5 de noviembre de 2022 .
  • Shine, Joseph W. (1988). Southern Pacific Motive Power Pictorial 1987/88 - The Interim Years (1.ª  ed.). Four-Ways West Publications. ISBN 9780961687434.
  • Shippen, Bill; Shine, Joseph W. (1999). Southern Pacific en transición . Four Ways Publications . ISBN 9781885614261.
  • Guss, Chris (marzo de 2016). "Túneles (motores) del pasado" . Revista Trains . Archivado del original el 9 de febrero de 2019. Recuperado el 7 de febrero de 2019 .
  • Logotipo de Wikimedia CommonsContenido multimedia relacionado con las locomotoras EMD SD45T-2 en Wikimedia Commons.