UP 6915, preserved by the Southern California chapter of the Railway and Locomotive Historical Society at the Los Angeles County Fairplex in Pomona, California.

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EMD DDA40X

The EMD DDA40X was a 6600 horsepower (4.9 MW) D-D diesel locomotive built by General Motors' Electro-Motive Division of La Grange, Illinois for the Union Pacific Railroad. 47 locomotives were built between June 1969 and September 1971; they were numbered UP #6900–6946. Download high resolution version (2304x1728, 683 KB) Wikipedia does not have an article with this exact name. ... Download high resolution version (2304x1728, 683 KB) Wikipedia does not have an article with this exact name. ... Pomona is a city located in Los Angeles County, California, in the eastern San Gabriel Valley. ... Image File history File links Commons-logo. ... The Wikimedia Commons (also called Commons or Wikicommons) is a repository of free content images, sound and other multimedia files. ... The AAR wheel arrangement system is a method of classifying locomotive (or unit) wheel arrangements that was developed by the Association of American Railroads. ... Great Western Railway No. ... You may be looking for the arena found in Vancouver, see GM place 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, 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. ... La Grange is a relatively affluent suburb of Chicago located in Cook County, in the U.S. state of Illinois. ... The Union Pacific Railroad NYSE: UNP is the largest railroad in the United States. ... 1969 (MCMLXIX) was a common year starting on Wednesday For other uses, see Number 1969. ... 1971 (MCMLXXI) is a common year starting on Friday (click for link to calendar). ...

The first locomotive, #6900, was delivered in time to participate in the celebrations of the 100th anniversary of the completion of the transcontinental railroad by driving a golden spike at Promontory Summit, Utah. The class was therefore named Centennial by the Union Pacific. A transcontinental railroad is a railway that crosses a continent, typically from sea to sea. Terminals are at or connected to different Oceans. ... The golden spike is a gold railroad spike which was hammered in by Leland Stanford to commemorate the completion of the first transcontinental railroad in the world, when the Central Pacific and Union Pacific railroads met on May 10, 1869 at Promontory Summit in Box Elder County in the Utah... Promontory is a location in Box Elder County, Utah, centered approximately at 41°3707N, 112°3251W, with an elevation of 1494 meters (4902 feet) above sea level. ...

The DDA40X is still the longest diesel locomotive design ever built, at 98 ft 5 in (30 m). The locomotive frame length required exceeded the abilities of EMD's plant, so the frames were fabricated by an outside contractor, the John Mohr Company of Chicago. Even today, it is one of the most powerful diesel locomotives ever, although it achieves this by using two diesel prime movers. A locomotive frame is the structure that forms the backbone of the railway locomotive, giving it strength and supporting the superstructure elements such as a cab, boiler or bodywork. ...

The 'X' in the designation stood for Experimental: the DDA40X locomotives were the testbeds for much technology that would go into future EMD products. They pioneered the modular electronic control systems later used on EMD's Dash-2 line of locomotives. For the first time, the locomotive was able to load-test itself, using its dynamic braking resistors as an electrical load so that external equipment was not required. The DDA40X used the wide-nosed cab from the FP45 cowl units. This design closely resembles the "North American safety cab" used on nearly all hood unit diesels today, but predates it by two decades. On January 1, 1972, General Motors Electro-Motive Division (EMD) introduced its new Dash 2 line of diesel-electric locomotives. ... Regenerative braking is any technology which allows a vehicle to recapture and store part of the kinetic energy that would ordinarily be lost when braking. ... An EMD FP45 of the Santa Fe Railway. ... The GE P42 is one of many cowl designs. ... A GP40 running long hood forward A hood unit, in railroad terminology, is a body style for locomotives. ...

There is a rumor that the Henry Ford Museum in Dearborn, MI has aqcuired one of these engines.

Surviving locomotives

UP 6930, at the Illinois Railway Museum, July 16, 2005.

Image File history File links Download high resolution version (855x456, 95 KB) UP 6930, an EMD DDA40X preserved at the Illinois Railway Museum, July 16, 2005. ... Image File history File links Download high resolution version (855x456, 95 KB) UP 6930, an EMD DDA40X preserved at the Illinois Railway Museum, July 16, 2005. ... The Union Pacific Railroad NYSE: UNP is the largest railroad in the United States. ... The only surviving EMD E5 is used regularly on the museums excursion trains, usually pulling the Nebraska Zephyr. ... July 16 is the 197th day (198th in leap years) of the year in the Gregorian Calendar, with 168 days remaining. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... For other uses, see Omaha (disambiguation). ... Historic downtown Pocatello Pocatello is a city located in Bannock County, with a small portion in neighboring Power County, in southeastern Idaho. ... Mexico City (Spanish: Ciudad de México) is the name of a megacity located in the Valley of Mexico (Valle de México), a large valley in the high plateaus (altiplano) at the center of Mexico, about 2,240 metres (7,349 feet) above sea-level, surrounded on most sides... Nickname: Big D Motto: Official website: www. ... Pomona is a city located in Los Angeles County, California, in the eastern San Gabriel Valley. ... Ogden sign over Washington Boulevard at the Ogden River; toward downtown John Moses Browning (January 21, 1855 – November 26, 1926), born in Ogden, Utah, was an American firearms designer who developed many varieties of weapons which were used in the U.S. military for decades in the 20th century. ... Grain elevator along the Union Pacific Railroad in downtown North Platte North Platte is a small city located in Lincoln County in southwestern Nebraska on I-80 where the South Platte River and the North Platte River join to form the Platte River. ... Chamberlain is a city located in Brule County, South Dakota. ... The only surviving EMD E5 is used regularly on the museums excursion trains, usually pulling the Nebraska Zephyr. ... Union is a village located in McHenry County, Illinois. ... Union Pacific 6936 is an EMD DDA40X locomotive owned by Union Pacific Railroad. ... North Little Rock is a city located in Pulaski County, Arkansas. ... The Gateway Arch, shown here behind the Old Courthouse, is the most recognizable part of the St. ... Portola is a city located in Plumas County, California. ...

Specifications

You may be looking for the arena found in Vancouver, see GM place 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, 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. ... 1969 (MCMLXIX) was a common year starting on Wednesday For other uses, see Number 1969. ... 1971 (MCMLXXI) is a common year starting on Friday (click for link to calendar). ... The EMD 645 is a line of diesel engines built by General Motors Electro-Motive Division. ... The gallon is a unit of volume used for measuring liquids (as well as dry matter). ...

References

• Strack, Don. Union Pacific’s DDA40X Centennial Locomotives. Retrieved on May 11, 2005.
• Hayden, Bob (Ed.) (1980). Model Railroader Cyclopedia-Volume 2: Diesel Locomotives, Kalmbach Books. ISBN 0-89024-547-9.

May 11 is the 131st day of the year in the Gregorian Calendar (132nd in leap years). ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ...

6- and 8-axle diesel locomotives built by GM-EMD
Six axle road power: SD7, SD9, SD18, SD24, SD28, SD35, SDP35, SD38, SD38AC, SD38-2, SD39, SDL39, SD40, SD40X, SD40A, SD40-2, SD40-2W, SD40T-2, SD402-SS, SDP40, SD45, SD45X, SD45-2, SD45T-2, SDP45, SD50, SD60, SD70, SD75M, SD75I, SD80MAC, SD90MAC Eight axle road power: DD35, DD35A, DDA40X, DDM45 See also: List of GM-EMD locomotives