The EMD SD89MAC was a 4,500 horsepower (3,360 kW)
C-Cdiesel-electric locomotive produced by
General Motors Electro-Motive Division. Along with the
SD80MAC and
SD90MAC, the SD89MAC was one of the largest single-engine locomotives produced by EMD. The SD89MAC featured
radial steering trucks and an isolated
cab which was mounted on shock absorbers to reduce vibration. The SD89MAC used AC
traction motor technology. Like the SD90MAC, it was a
hood unit fitted with a safety cab and has an enlarged radiator section, nearly the entire width of the locomotive, which makes it easy to spot. The frame of GM 92, the only SD89MAC ever built, has since been retrofitted with a different engine for Tier 4 compliance tests conducted by EMD.
The SD89MAC was intended to be less-powerful version of the
SD90MAC, and eventual successor to the
SD70 series. One demonstrator was built, but generated no orders.[1]
The EMD SD89MAC was a 4,500 horsepower (3,360 kW)
C-Cdiesel-electric locomotive produced by
General Motors Electro-Motive Division. Along with the
SD80MAC and
SD90MAC, the SD89MAC was one of the largest single-engine locomotives produced by EMD. The SD89MAC featured
radial steering trucks and an isolated
cab which was mounted on shock absorbers to reduce vibration. The SD89MAC used AC
traction motor technology. Like the SD90MAC, it was a
hood unit fitted with a safety cab and has an enlarged radiator section, nearly the entire width of the locomotive, which makes it easy to spot. The frame of GM 92, the only SD89MAC ever built, has since been retrofitted with a different engine for Tier 4 compliance tests conducted by EMD.
The SD89MAC was intended to be less-powerful version of the
SD90MAC, and eventual successor to the
SD70 series. One demonstrator was built, but generated no orders.[1]