|Builder||Electro-Motive Corporation (EMC)|
|Total produced||8 A units, 3 B units|
|AAR wheel arr.||A1A-A1A|
|Gauge||4 ft 8 1⁄2 in (1,435 mm)|
|Prime mover||Winton 201-A, 2 off|
|Power output||1,800 hp (1,300 kW)|
|Railroad(s)||Atchison, Topeka and Santa Fe Railway|
|Number||2–9 (A units), 2A–4A (B units)|
The EMC E1 was an early passenger-train diesel locomotive developing 1,800 hp, with an A1A-A1A wheel arrangement, and manufactured by Electro-Motive Corporation of La Grange, Illinois. They were built during 1937 and 1938 for the Atchison, Topeka and Santa Fe Railway for a new generation of diesel-powered streamlined trains. 8 cab-equipped lead A units and three cabless booster B units were built. The initial three locomotives were AB pairs built to haul the Santa Fe's Super Chief diesel streamliners, while the others were built as single A units to haul shorter trains. The locomotives were diesel-electrics with two 900 hp Winton 201-A engines each, with each engine driving its own generator to power the traction motors. The E1 was the second model in a long line of passenger diesels of similar design known as EMD E-units. All Winton 201A-engined Santa Fe passenger units, including the E1's, were extensively rebuilt into the 80-class E8M engines in 1952-53. These were similar to production E8 models, but derated to 2000 hp so as not to burn out the early traction (axle) motors (which were reused).
Significance and influence
The E1—along with the more-or-less simultaneous EA/EB for the Baltimore and Ohio Railroad and the E2 for the Union Pacific Railroad, Chicago and North Western Railway and Southern Pacific Railroad—represented an important step in the evolution of the passenger diesel locomotive. While the EA, E1 and E2 were each built for a specific railroad, they were largely identical mechanically and were a step further away from the custom-built, integrated streamliner and towards mass-produced passenger locomotives—a step achieved with the E3, E4, E5, and E6, EMD's next models.
The EA/EB and E1 featured largely identical and innovative styling showing the influence of the Electro-Motive Corporation's new buyer General Motors. While mechanically they had much in common with previous, experimental EMC locomotives, GM understood the importance of looking new and exciting, not merely being technically innovative. This basic "slant nose" style was continued in the subsequent E3, E4, E5 and E6 models, while a more "bulldog nose" style was tried in the E2 and a style somewhere in between was used for the E7, E8 and E9, as well as the freight diesel cab units. It could fairly be said that the overall styling influenced passenger locomotives around the world. The "shovelnose" styling was modified on later models because the streamlined headlight was found less satisfactory than more common types with vertical lenses, and the elegantly sloped nose had a bad habit of deflecting vehicles up toward the cab in a grade crossing collision. More enduring was the paint scheme—E1 number two and her booster #2A were the first locomotives to wear the world-famous Santa Fe "Warbonnet" red and silver colors. In fact, these units used stainless steel sides on the carbody to better match the road's new stainless passenger cars. Interestingly, this decor was not developed by the Santa Fe, but by EMC—or rather, by GM's Art and Color section.
Numbers and assignments
Each E1 was initially ordered for and assigned to a particular train. The ATSF practice was to give all locomotive units in a set the same number, distinguished by letter. The lead unit was designated 'L', but this was not carried on its numberboards. The second unit was 'A'; subsequent units were 'B', 'C', if present. This numbering was part of the railroads' ultimately successful campaign to convince the railroad unions that a multiple-unit diesel locomotive should be considered one locomotive of several parts (and thus needing only one crew) rather than multiple locomotives requiring multiple crews under union agreements.
- 2 and 2A - for the original streamlined Super Chief.
- 3 and 3A - for the second streamlined Super Chief trainset.
- 4 and 4A - backup power for the Super Chief.
- 5 - for the El Capitan.
- 6 - for the El Capitan.
- 7 - for the San Diegan.
- 8 - for the Golden Gate.
- 9 - for the Golden Gate.
- Lamb, J. Parker (2007). Evolution of the American Diesel Locomotive. Railroads Past and Present. Bloomington, IN, USA: Indiana University Press. ISBN 9780253348630.
- Marre, Louis A. (1995). Diesel Locomotives: The First 50 Years: A Guide to Diesels Built Before 1972. Railroad Reference Series (Book 10). Waukesha, WI, USA: Kalmbach Publishing. ISBN 0890242585.
- Pinkepank, Jerry A. (1973). The Second Diesel Spotter’s Guide. Milwaukee, WI: Kalmbach Publishing Company. ISBN 0-89024-026-4.
- Schafer, Mike (1998). Vintage Diesel Locomotives. Enthusiast Color Series. Osceola, WI, USA: MBI Publishing. ISBN 0760305072.
- Solomon, Brian (2000). The American Diesel Locomotive. Osceola, WI, USA: MBI Publishing. pp. 53–56, 63, 65, 67, 68, 70. ISBN 0760306664.
- Solomon, Brian (2006). EMD Locomotives. St. Paul, MN, USA: Voyageur Press. ISBN 9780760323960.
- Solomon, Brian (2010). Vintage Diesel Power. Minneapolis, MN, USA: MBI Publishing. ISBN 9780760337950.
- Solomon, Brian (2011). Electro-Motive E-Units and F-Units: The Illustrated History of North America's Favorite Locomotives. Minneapolis, MN, USA: Voyageur Press. ISBN 9780760340073.
- Solomon, Brian (2012). North American Locomotives: A Railroad-by-Railroad Photohistory. Minneapolis, MN, USA: Voyageur Press. ISBN 9780760343708.
- Wilson, Jeff (2002). E Units: Electro-Motive's Classic Streamliners. Classic Trains / Golden Years of Railroading series. Waukesha, WI, USA: Kalmbach Publishing. ISBN 0890246068.
|Wikimedia Commons has media related to EMC E1 locomotives.|
- Anderson, Norm. Santa Fe Passenger Diesels. Posting on Railfans.net forums, May 1, 2004. Retrieved from Railfan.net Forums on December 22, 2004.
- Photos at North-East Rails, including a picture of the cab interior.