EMD TR1
Encyclopedia
The EMD TR1 was a two-unit "cow-calf
" diesel locomotive
built by General Motors
Electro-Motive Division of La Grange, Illinois
in 1941. Two pairs were built for the Illinois Central Railroad
, the only purchaser.
The locomotive units strongly resembled the EMD NW3
, with a long frame, Blomberg B
road trucks
, and a large cab connected to a wide area of hood that tapered going forward. The locomotives incorporated the machinery of the EMD FT
in switcher
bodywork; a V16
EMD 567
diesel engine
of 1350 hp in each unit.
The cow and calf units were semipermanently coupled together with a drawbar instead of couplers, in similar fashion to the FT's twin-unit sets.
The two locomotive pairs were numbered 9250A&B and 9251A&B, later renumbered 1350A&B and 1351A&B. They initially were assigned to Markham Yard south of Chicago, IL, but by the early 1950s had been reassigned to the yard at East St. Louis, IL.
Both remained in this service until they were retired in 1966 and traded in to EMD in part exchange for new EMD GP40
locomotives.
Cow-calf
In North American railroading, a cow-calf locomotive is a set of switcher-type diesel locomotives. The set usually is a pair; some 3-unit sets were built, but this was rare. A cow is equipped with a driving cab; a calf is not...
" diesel locomotive
Diesel locomotive
A diesel locomotive is a type of railroad locomotive in which the prime mover is a diesel engine, a reciprocating engine operating on the Diesel cycle as invented by Dr. Rudolf Diesel...
built by General Motors
General Motors
General Motors Company , commonly known as GM, formerly incorporated as General Motors Corporation, is an American multinational automotive corporation headquartered in Detroit, Michigan and the world's second-largest automaker in 2010...
Electro-Motive Division of La Grange, Illinois
La Grange, Illinois
La Grange, a suburb of Chicago, is a village in Cook County, in the U.S. state of Illinois. The population was 15,608 at the 2000 census.-History:...
in 1941. Two pairs were built for the Illinois Central Railroad
Illinois Central Railroad
The Illinois Central Railroad , sometimes called the Main Line of Mid-America, is a railroad in the central United States, with its primary routes connecting Chicago, Illinois with New Orleans, Louisiana and Birmingham, Alabama. A line also connected Chicago with Sioux City, Iowa...
, the only purchaser.
The locomotive units strongly resembled the EMD NW3
EMD NW3
The EMD NW3 was a 1,000 hp road switcher diesel-electric locomotive built by General Motors Electro-Motive Division of La Grange, Illinois between November 1939 and March 1942...
, with a long frame, Blomberg B
Blomberg B
The Blomberg B was a "B" diesel locomotive truck. These trucks were the standard EMD four wheel truck from the FT up until the GP60. EMD introduced the truck in 1936. Unofficially it is named after Martin Blomberg, who joined the company the year before...
road trucks
Bogie
A bogie is a wheeled wagon or trolley. In mechanics terms, a bogie is a chassis or framework carrying wheels, attached to a vehicle. It can be fixed in place, as on a cargo truck, mounted on a swivel, as on a railway carriage/car or locomotive, or sprung as in the suspension of a caterpillar...
, and a large cab connected to a wide area of hood that tapered going forward. The locomotives incorporated the machinery of the EMD FT
EMD FT
The EMD FT was a diesel-electric locomotive produced between November 1939, and November 1945, by General Motors' Electro-Motive Division . All told 555 cab-equipped A units were built, along with 541 cabless booster B units, for a grand total of 1,096 units. The locomotives were all sold to...
in switcher
Switcher
A switcher or shunter is a small railroad locomotive intended not for moving trains over long distances but rather for assembling trains ready for a road locomotive to take over, disassembling a train that has been...
bodywork; a V16
V16 engine
A V16 engine is a V engine with 16 cylinders. Engines of this number of cylinders are uncommon in automotive use.A V16 engine is perfectly balanced regardless of the V angle without requiring counter-rotating balancing shafts which are necessary to balance Straight-4 and odd number of cylinder...
EMD 567
EMD 567
The EMD 567 is a line of diesel engines built by General Motors' Electro-Motive Division. This engine, which succeeded Winton's 201-A, was used in EMD's locomotives from 1938 until its replacement in 1966 by the EMD 645. It has a bore of , a stroke of and a displacement of 567 in³ per cylinder...
diesel engine
Diesel engine
A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber...
of 1350 hp in each unit.
The cow and calf units were semipermanently coupled together with a drawbar instead of couplers, in similar fashion to the FT's twin-unit sets.
The two locomotive pairs were numbered 9250A&B and 9251A&B, later renumbered 1350A&B and 1351A&B. They initially were assigned to Markham Yard south of Chicago, IL, but by the early 1950s had been reassigned to the yard at East St. Louis, IL.
Both remained in this service until they were retired in 1966 and traded in to EMD in part exchange for new EMD GP40
EMD GP40
The EMD GP40 is a 4-axle diesel-electric road switcher locomotive built by General Motors Electro-Motive Division between November 1965 and December 1971...
locomotives.