View source for EMD F2

{{Short description|American diesel freight locomotive}}
{{no footnotes|date=July 2016}}
{{Infobox Locomotive
| name=EMD F2
| image=Rock Island EMD F2 diesel locomotives heading a freight at Joliet Union Station, 16 Aug 1963.jpg
| caption=[[Chicago, Rock Island and Pacific Railroad|Rock Island]] F2 locomotive no. 43 and a contemporary B unit lead a freight train through [[Joliet Union Station|Joliet]], Illinois, in August 1963
| powertype=Diesel-electric
| gauge={{track gauge|ussg}}
| builder=[[Electro-Motive Diesel|General Motors Electro-Motive Division]] (EMD)
| buildmodel=F2
| aarwheels=B-B
| builddate=July 1946 – November 1946
| totalproduction=74 [[A unit]]s, 30 [[B unit]]s
| primemover = [[Electro-Motive Diesel|EMD]] [[EMD 567|16-567B]]
| generator = EMD D8
| maxspeed={{convert|65-102|mph|kph|0|abbr=on}}
| poweroutput=1,350 [[horsepower|hp]] (1000&nbsp;kW)
|disposition=All scrapped
}}

The '''EMD F2''' was a [[freight]]-hauling [[diesel locomotive]] built by [[Electro-Motive Diesel|General Motors Electro-Motive Division]] between July 1946 and November 1946. It succeeded the [[EMD FT|FT]] model in GM-EMD's [[EMD F-unit|F-unit]] sequence, and was replaced in turn by the [[EMD F3|F3]]. The F2 was in many respects a transitional type between those two; it kept the {{Convert|1350|hp|abbr=on|lk=in}} rated D8 generator from the FT due to late development of the new D12 generator intended for the F3, but in a revised carbody design and internal layout that would be continued through the rest of the F-unit series. 74 cab-equipped lead [[A unit]]s and 30 cabless booster [[B unit]]s were produced.

There are no reliable recognition features for an F2. They were built with what has become known as 'Type 1' side panels, with three portholes and no filter grilles, but this was carried over into early F3 production and in any case, could be changed later by the customer. Like some early F3s, they were built with small side number boards on the nose. They, and all subsequent F-units, are readily distinguished from the FT by having two exhaust stacks instead of four, and by having no large overhang on the end of the B units, while the trucks were a little further away from the other ends. 

They also had four [[radiator (engine cooling)|radiator]] fans at the center of the unit next to each other in line on the roof instead of two at each end. This external feature was the result of a major change in internal arrangement, the replacement of all mechanical and belt-drives for radiator fans and [[traction motor]] blowers with [[electric motor]]s. Power for these accessories was produced by a new D14 [[three phase]] [[alternator]] built into the main DC generator, called a “companion alternator”. This device has been used in all later EMD road locomotives to the present.

All F2's were scrapped, making them the only EMD F-unit model with no extant examples.

==Original owners==
EMD built 104 F2 locomotives: 74 [[A unit]]s and 30 [[B unit]]s. Nine railroads purchased A units; of these, four purchased B units. The most significant buyers were the [[Ferrocarriles Nacionales de México]], [[Atlantic Coast Line Railroad]], and [[Boston and Maine Railroad]], which purchased 28, 24, and 21 locomotives, respectively.{{sfnp|Cook|2015a|p=25}}

== Notes ==
{{reflist}}

== References ==
* {{cite magazine | last1=Calloway | first1=Warren | last2=Cupper | first2=Dan | last3=Withers | first3=Paul | title=EMD's F2 - An Interim Model | magazine=Diesel Era | date=March–April 1996 | pages=31–46 | issn=1049-5622}}
* {{cite magazine | last=Cook | first=Preston |title=F Units, T to 9 | magazine=Classic Trains | date=Spring 2015 | pages=20–35 | issn=1527-0718 | ref={{harvid|Cook|2015a}} }}
* {{Lamb-Evolution}}
* {{Marre-diesel-50}}
* {{Pinkepank diesel spotters guide 2}}
* {{Schafer-Vintage Diesel}}
* {{Solomon-American Diesel}}
* {{Solomon-EMD F-Unit}}
* {{Solomon-EMD Locomotives}}
* {{Solomon-Vintage Diesel}}
* {{Solomon-Electro-Motive}}
* {{Solomon-North American Locomotives}}
* {{Wilson-F Units}}

== External links ==
{{commonscat|EMD F2 locomotives}}
* [https://www.american-rails.com/f2.html EMD "F2" Locomotives: Specs, Roster, History]

{{EMD cab and cowl}}

{{DEFAULTSORT:Emd F2}}
[[Category:B-B locomotives]]
[[Category:Electro-Motive Division locomotives|F02]]
[[Category:Diesel–electric locomotives of the United States]]
[[Category:Railway locomotives introduced in 1946]]
[[Category:Locomotives with cabless variants]]
[[Category:Scrapped locomotives]]
[[Category:Standard-gauge locomotives of the United States]]
[[Category:Standard-gauge locomotives of Mexico]]
[[Category:Diesel–electric locomotives of Mexico]]
[[Category:Streamlined diesel locomotives]]
[[Category:Chicago, Burlington and Quincy locomotives]]
[[Category:New York Central Railroad locomotives]]