WHEEL ARRANGEMENT: 4 WHEEL TRUCKS (2)
TYPE TYPE NAME: SW9
MANUFACTURER: GENERAL MOTORS ELECTRO-MOTIVE DIVISION (EMD)
POWER SOURCE: 567C V12 DIESEL (1200 HP)
BUILD DATE: 1950-1953
TOTAL NUMBER PRODUCED: 786
RAIL GAUGE: STANDARD GAUGE (4 ft 8-1/2 in)
ROAD NAME: CHESAPEAKE AND OHIO
DC/DCC: DCC EQUIPPED (Converted)
OVERVIEW:
This was my second Diesel Locomotive and I also had to convert this unit to run on DCC. This unit is used for yard switching of the rolling stock as well as any other smaller operations.
"An EMD SW9 is a diesel switcher locomotive built by General Motors Electro-Motive Division between November 1950 and December 1953. Additional SW9s were built by General Motors Diesel in Ontario Canada from December 1950 to March 1953. Power was provided by an EMD 567B 12-cylinder engine, producing 1,200 horsepower (895 kW). 786 examples of this model were built for American railroads and 29 were built for Canadian railroads.
The SW9 was EMD's successor to the SW7. Like the SW7, the SW9 retained a power output of 1,200 hp and the same general design. It differed in lacking the upper hood vents found in the SW7, and with the installation of a 567B engine to replace the 567A found in the SW7.
Starting in October 1953 a number of SW9s were built with the 567BC engine. In December 1953, one locomotive, Weyerhaeuser 305, was built with a 567C engine. The 567C was subsequently installed on the SW9's successor, the SW1200.
In addition to the single units produced, ten TR5 cow-calf paired sets were produced (eight for the Union Pacific Railroad, and two for the Union Railroad of Pittsburgh). The Union Railroad also bought an additional two TR5B "calves"." -https://en.wikipedia.org/wiki/EMD_SW9
Another source for information on the SW9:
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