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Encyclopedia > EMD AB6
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Rock Island AB6 750.

The EMD AB6 was a diesel locomotive type built exclusively for the Chicago, Rock Island and Pacific Railroad (the "Rock Island Line") by General Motors' Electro-Motive Division and delivered in June 1940. Two examples were built, numbered #750 and #751. They were built for the Rocky Mountain Rocket passenger train, which travelled as a unified train from Chicago, Illinois to Limon, Colorado but then divided, one segment going to Colorado Springs, Colorado and the other to Denver, Colorado. The Rock Island desired a locomotive which could look like an integrated part of the train during the Chicago-Limon portion of the route, but could then be driven independently to take 3 cars to Colorado Springs. A regular, cab-equipped A unit could have been purchased, but that would have ruined the streamlined look of the train, so the RI had EMD build a flat-fronted locomotive based on an E-series EMD E6B (B unit) but with a driving cab, headlight, pilot and other features to enable it to operate as an independent locomotive. Chicago, Rock Island and Pacific Railroad EMD AB6 diesel locomotive #750 at Limon, Colorado, July 7, 1940. ... Chicago, Rock Island and Pacific Railroad EMD AB6 diesel locomotive #750 at Limon, Colorado, July 7, 1940. ... Great Western Railway No. ... The Chicago, Rock Island & Pacific Railroad (AAR reporting mark RI) was a Class 1 railroad in the United States. ... General Motors Corporation (NYSE: GM), also known as GM, is a United States-based automobile maker with worldwide operations and brands including Buick, Cadillac, Chevrolet, Daewoo, GMC, Holden, Hummer, Opel, Pontiac, Saturn, Saab, and Vauxhall. ... General Motors Electro-Motive Division (normally shortened to GM EMD or just EMD) is the worlds largest builder of railroad locomotives. ... 1940 was a leap year starting on Monday (link will take you to calendar). ... This article is about trains in rail transport. ... Chicago (officially named the City of Chicago) is the third largest city in the United States (after New York City and Los Angeles) and the largest inland city in the country, with an official population of 2,896,016, as of the 2000 census. ... Limon is a town located in Lincoln County, Colorado. ... Colorado Springs is a middle-sized city, located just east of the geographic center of the state of Colorado in the United States. ... Denver is the largest city and capital of the state of Colorado, United States of America. ... Categories: Stub | EMD locomotives ... Brand new Union Pacific Railroad E6 number 8-M-1 at Denver, Colorado in September 1940. ... Bold textExtra-Ordinariness This page is a candidate for speedy deletion. ... In railroading, the pilot is the device mounted at the front of a locomotive to deflect obstacles from the track that might otherwise derail the train. ...


Since the small 3 and 4 car trains the units would have to haul independently were very light, the AB6 pair were built with only one 1,000 hp EMD 567 V12 engine, and a baggage compartment where the second engine would have been. Later, with increasing trainloads, the baggage compartment was replaced with a second engine. A V12 is an internal combustion engine with 12 cylinders in V configuration. ...


In 1965, the units had their steam generators replaced with head-end power and were reassigned to push-pull suburban service in the Chicago area. In this form, they lasted until the mid 1970s. In a nuclear power plant, steam generators are where the primary cooling loop transfers its thermal energy into the secondary cooling loop. ... Push-pull can also refer to a type of electronic amplifier. ... Events and trends Although in the United States and in many other Western societies the 1970s are often seen as a period of transition between the turbulent 1960s and the more conservative 1980s and 1990s, many of the trends that are associated widely with the Sixties, from the Sexual Revolution...


Reference

  • Marre, Louis A. (1995). Diesel Locomotives: The First 50 Years, p.123. Kalmbach Publishing Co. ISBN 0-89024-258-5.


Diesel locomotives built by GM-EMD
Switchers: SC, NC, NC1, NC2, T, NW2, NW3, NW4, NW5, TR1, SW1, SW7, SW8, SW9, SW600, SW900, SW1000, SW1001, SW1200, SW1500, SW1504, MP15DC, MP15AC, MP15T, GMD1, RS1325
Four axle road power: BL2, GP7, GP9, GP15-1, GP15AC, GP15T, GP18, GP20, GP20D, GP28, GP30, GP35, GP38, GP38AC, GP38-2, GP39, GP39DC, GP39X, GP39-2, GP40, GP40P, GP40P-2, GP40TC, GP40X, GP40-2, GP49, GP50, GP59, GP60
Six axle road power: SD7, SD9, SD18, SD24, SD28, SD35, SDP35, SD38, SD38AC, SD38-2, SD39, SDL39, SD40, SD40A, SD40-2, SD40-2W, SD40T-2, SD402-SS, SDP40, SD45, SD45X, SD45-2, SD45T-2, SDP45, SD50, SD60, SD70, SD80MAC, SD90MAC
Eight axle road power: DD35, DD35A, DDA40X
Cab units (F- & E-units) FT, F2, F3, F7, FP7, F9, FP9, FL9, TA, EA/EB, E1, E2, E3, E4, E5, E6, E7, E8, E9, AB6
Cowl units: F45, FP45, F40C, F40PH, F40PH-2, F40PH-2C, F40PH-2M, SDP40F, SD40-2F, SD50F, F59PH, F59PHI, SD60F
Electrics: SW1200MG, AEM7, GM6, GM10, GF6C
Industrial, military, export and narrow gauge: Model 40, DHI, GMDH-1, GMDH-3, MRS-1, GA8, G8, G12, G16, NF210, JT42CWR (Series 66), JT42HW-HS, GT46MAC
Streamliners: M-10000, M-10001, M-10002, M-10003-6, Pioneer Zephyr, General Pershing Zephyr, Green Diamond, Flying Yankee
Experimentals: EMD 1800 hp B-B

  Results from FactBites:
 
Informat.io on List Of Gm Emd Locomotives (298 words)
EMD AB6 — a unique cab-equipped booster built for the Chicago, Rock Island and Pacific Railroad.
Cowl units, originally produced at the request of the Santa Fe, had a full-width 'cowl' body built on a hood unit frame which provided all the structural strength; the bodywork was cosmetic, rather than a load-bearing bridge truss frame as in cab units.
The vast majority were EMD engines and components inside a carbody built by another manufacturer, since EMD did not have the ability to build their own bodies until 1936.
  More results at FactBites »


 

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