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EMD F-units were a line of Diesel-electric locomotives produced between November 1939 and November 1960 by General Motors Electro-Motive Division. A Diesel locomotive is a type of Railroad Locomotive in which the prime mover is a Diesel engine. Year 1939 ( MCMXXXIX) was a Common year starting on Sunday (link will display the full calendar of the Gregorian calendar. Year 1960 ( MCMLX) was a Leap year starting on Friday (link will display full calendar of the Gregorian calendar. General Motors Corporation ( GM) ( is a multinational automobile manufacturer founded in 1908 and headquartered in the United States. Electro-Motive Diesel Inc (formerly the Electro-Motive Division of General Motors Corporation is currently the world's second largest builder of Railroad Final assembly for all F-units was at the GM-EMD plant at La Grange, Illinois. La Grange, a Suburb of Chicago, is a village in Cook County, in the U They were sold to railroads throughout the United States, Canada and Mexico. The United States of America —commonly referred to as the Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page The United Mexican States ( or commonly Mexico (ˈmɛksɪkoʊ () is a federal constitutional Republic in North America. The term F-unit refers to the model numbers given to each successive type, all of which began with F.

EMD's FT demonstrator set #103, the locomotive that sold US railroads on the freight-hauling Diesel-electric locomotive.
EMD's FT demonstrator set #103, the locomotive that sold US railroads on the freight-hauling Diesel-electric locomotive.

F-units were originally designed for freight service, although some hauled passenger trains. Almost all F-units were B-B locomotives; they ran on two Blomberg B two-axle trucks with all axles powered. The AAR wheel arrangement system is a method of classifying locomotive (or unit Wheel arrangements that was developed by the Association of American Railroads. The Blomberg B was a "B" Diesel locomotive truck. These trucks were the standard EMD truck from the FT up until the Dash 2 A bogie (ˈboʊgi (BŌ-gē is a Wheeled wagon or trolley In mechanics terms a bogie is a Chassis or framework carrying wheels attached to a vehicle The prime mover in F-units was a sixteen cylinder EMD 567 series mechanically aspirated two-stroke Diesel engine, progressing from model 16-567 through 16-567C. The EMD 567 is a line of Diesel engines built by General Motors' Electro-Motive Division. The Roots type Supercharger or Roots blower is a positive displacement pump which operates by pulling Air through a pair of meshing lobes not The two-stroke Internal combustion engine differs from the more common Four-stroke engine by completing the same four processes (intake compression combustion exhaust A diesel engine is an Internal combustion engine which operates using the Diesel cycle (named after Dr

Structurally, the locomotive was a carbody unit with the body as the main load-bearing structure, of a bridge-truss like design, and covered with cosmetic panels. A cab unit and a carbody unit are body styles of Locomotives in Railroad terminology. In Architecture and Structural engineering, a truss is a structure comprising one or more triangular units constructed with straight slender members whose The so-called bulldog nose was a distinguishing feature of the locomotive's appearance, and made a lasting impression in the mind of the traveling public. The Bulldog, colloquially known as the British Bulldog or English Bulldog, is a medium-size breed of Dog that originated in England

The F-units were the most successful "first generation" road Diesel locomotives in North America, and were largely responsible for the replacing of the steam locomotive in road freight service. A steam locomotive is a Locomotive powered by Steam. The term usually refers to its use on Railways but can also refer to a "road locomotive"

F-units were sometimes known as covered wagons, due to the similarity in appearance of the roof of an F-unit to the canvas roof of a Conestoga wagon, an animal-drawn wagon used in the westward expansion of the United States during the late 1700s and 1800s. The Conestoga wagon is a heavy broad-wheeled covered freight carrier used extensively during the United States in the late 1700s and 1800s The United States of America —commonly referred to as the When a train's locomotive consist included only F-units, the train would then be called a wagon train. Wagon Train is a Television Western Series on NBC from 1957 - 1962 and then on ABC from 1962- These two usages are still popular with the railfan community. A railfan or rail buff ( American English) railway enthusiast or railway buff ( Australian / British English) or (often

Contents

Models

Passenger service

While the F-unit series was originally conceived for freight service, many were used to haul passenger trains. The EMD FT was a Diesel-electric locomotive produced between November 1939 and November 1945 by General Motors ' Electro-Motive Division (the "F" Year 1939 ( MCMXXXIX) was a Common year starting on Sunday (link will display the full calendar of the Gregorian calendar. Year 1945 ( MCMXLV) was a Common year starting on Monday (link will display the full calendar The EMD F2 was a Freight -hauling Diesel locomotive built by General Motors Electro-Motive Division between July 1946 and November 1946 Year 1946 ( MCMXLVI) was a Common year starting on Tuesday (link will display full 1946 calendar of the Gregorian calendar. The EMD F3 was a, B-B Freight -hauling Diesel locomotive produced between July 1945 and February 1949 by General Motors Year 1945 ( MCMXLV) was a Common year starting on Monday (link will display the full calendar Year 1949 ( MCMXLIX) was a Common year starting on Saturday (link will display the full calendar of the Gregorian calendar. The EMD F7 was a, B-B Diesel-electric locomotive produced between February 1949 and December 1953 by General Motors ' Electro-Motive Division Year 1949 ( MCMXLIX) was a Common year starting on Saturday (link will display the full calendar of the Gregorian calendar. Year 1953 ( MCMLIII) was a Common year starting on Thursday (link will display full calendar of the Gregorian calendar. The EMD FP7 was a, B-B dual-service passenger and freight-hauling Diesel locomotive produced between June 1949 and December 1953 by General Motors ' Year 1949 ( MCMXLIX) was a Common year starting on Saturday (link will display the full calendar of the Gregorian calendar. Year 1953 ( MCMLIII) was a Common year starting on Thursday (link will display full calendar of the Gregorian calendar. The EMD F9 was a 1750hp B-B Freight -hauling Diesel locomotive built between February 1953 and May 1960 by General Motors Year 1954 ( MCMLIV) was a Common year starting on Friday (link will display full 1954 Gregorian calendar) Year 1957 ( MCMLVII) was a Common year starting on Tuesday (link displays the 1957 Gregorian calendar) The EMD FP9 was a, B-B dual-service passenger and freight-hauling Diesel locomotive produced between February 1954 and December 1959 by Year 1954 ( MCMLIV) was a Common year starting on Friday (link will display full 1954 Gregorian calendar) The year 1959 ( MCMLIX) was a Common year starting on Thursday (link will display full calendar of the Gregorian calendar. The EMD FL9 (New Haven Class EDER-5 was a dual-power Electro-diesel locomotive, capable of self-powered Diesel-electric operation and of operation as an Year 1956 ( MCMLVI) was a Leap year starting on Sunday (link will display full calendar of the Gregorian calendar. Year 1960 ( MCMLX) was a Leap year starting on Friday (link will display full calendar of the Gregorian calendar. A train is a connected series of vehicles that move along a track ( Permanent way) to transport freight or passengers from one place to another The original FT, as delivered, did not contain a steam generator for train heating, but a large empty space in the rear of their B units was used to add one on several railroads. Steam generator is the term used to describe a type of boiler used to produce Steam for climate control and Potable water heating in Railroad A "B" unit in railroad terminology, is a Locomotive unit (generally a Diesel locomotive) which does not have a driving Cab, or crew compartment Learning from this, EMD offered an optional steam generator on the F3 and later models. This was mounted at the rear of the carbody; steam-generator equipped locomotives can be recognised by the exhaust stack and safety valves protruding at the rear of the roof.

The F units were popular passenger locomotives on mountain grades (where they were recommended by EMD), because a four-unit set had more motored axles than a trio of E-units of equivalent power (sixteen versus twelve) and thus had less chance of overloading the traction motors. EMD E-units were a line of Passenger train Diesel locomotives built by the General Motors Electro-Motive Division (EMD and its predecessor the Electro-Motive Additionally, that 4-unit F set had all its weight on driven wheels and was thereby capable of greater tractive effort. Tractive Effort (abbr TE is the pulling force exerted normally by a Locomotive, though the term could also be used for anything else that pulls a load The F7 was also popular in passenger service for commuter services and other service where the trains were short.

Options

There were several options that could be specified by ordering railroads, such as type and mounting location of horns, bells, and the like. Train horns are audible warning devices found on most diesel and electric Locomotives Their primary purpose is to alert persons and animals to the presence of a train

Dynamic brakes

Dynamic brakes were an option on F units ordered by railroads with mountainous terrain and heavy grades. Dynamic braking is the use of the electric Traction motors of a Railroad vehicle as generators when slowing the vehicle

Passenger or freight pilot

Either a passenger or freight style pilot could be ordered. 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 The passenger pilot, similar to that standard on EMD E units, sloped smoothly down from the bottom of the nose, making a single slope all the way down from the headlight. EMD E-units were a line of Passenger train Diesel locomotives built by the General Motors Electro-Motive Division (EMD and its predecessor the Electro-Motive The coupler was retractable with concealing doors. The result was a very attractive appearance that enhanced the impression of a powerful and speedy machine.

The freight pilot curved inward a little way below the bottom of the nose before sloping out again, to give more clearance to the coupler and hoses. The coupler was non-retractable and protruded through a rectangular opening in the pilot.

See also

CF7

References

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