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The F7 succeeded the F3 model in GM-EMD's F-unit series, and was replaced in turn by the F9. Final assembly was at GM-EMD's La Grange, Illinois , plant or GMD's London, Ontario , facility. There was no F4, -5 or -6 model; "7" was chosen to match the contemporary twin-engine E7 , and was also applied to the new GP7 road-switcher.
Type Road number Build year Total produced AAR wheel arrangement Prime mover Power output Image EMC 1800 hp B-B: ATSF 1: 1935 1 B-B+B-B: Dual Winton 12-201-A: 1,800 hp (1,342 kW)
An EMD E7, one of the American "bulldog noses" "Bulldog nose" is the nickname given, due to their appearance, to several cab-unit diesel-electric locomotives manufactured by GM-EMD and its licensees from 1939 to 1970. The term originated with EMD F-units, as well as later E-unit models such as the E7, E8, and E9.
The FT, introduced in 1939 with the new 1,350 hp (1.01 MW) 567 engine and Blomberg B trucks, was a successful design, and remained in production during WWII.. The F3 (1946) had a different roof arrangement that included the replacement of the FT's boxy dynamic brake structure with two under-roof grids, two exhaust stacks instead of four, and four cooling fans grouped together instead of ...
CSX ex-EMD GP40 road slug 2358 in Chester, Pennsylvania. It lacks radiator openings and fans, compared to the trailing unit. It lacks radiator openings and fans, compared to the trailing unit. A road slug is designed to serve as part of a regular locomotive consist for road haulage.
As of 2008, EMD employed approximately 3,260 people, [4] and in 2010 it held approximately 30% of the market for diesel-electric locomotives in North America. [5] The only significant competitor is Wabtec -owned GE Transportation , which holds the rest of the 70% market share of the North American market.
Santa Fe's aging fleet of F7 units were approaching retirement age in 1970. These units were remanufactured into switchers and named CF7. Santa Fe used them for a decade and sold many of them to short lines around the states. Many of those were still being used as of 2003. [4]
However, GM-EMD had then developed the GP30 model to compete with it; GP30 production had commenced in 1961. Over many years, the GP30's reliability had given it a sales advantage, and when EMD introduced its successor, the Dash 2, in 1972, the Universal Series became completely obsolete. The Dash 7 Series was intended to redress the ensuing ...