6000 Horsepower SD90MAC-II Locomotives
Union Pacific SD90MAC-II units No. 8536 and 8551 lead a 120 car ILBG1 container train at Lake Point, Utah the afternoon of Aug. 20, 2000. Between 1996 and 1999, EMD built 21 SD90MAC-H and 40 SD90MAC-II locomotives for the Union Pacific Railroad. Originally numbered 8501-8521 and 8522-8561, the 6000 horsepower units were in direct competition with GE’s new AC6000CW series. The units were equipped with radial steering trucks, AC traction motors, and isolated safety cabs with shock absorbers. Operational flexibility compared to UP’s smaller units plagued them from the beginning and UP retired all of its 6000 HP EMD units by 2008.
6000 Horsepower SD90MAC-II Locomotives
Union Pacific SD90MAC-II units No. 8536 and 8551 lead a 120 car ILBG1 container train at Lake Point, Utah the afternoon of Aug. 20, 2000. Between 1996 and 1999, EMD built 21 SD90MAC-H and 40 SD90MAC-II locomotives for the Union Pacific Railroad. Originally numbered 8501-8521 and 8522-8561, the 6000 horsepower units were in direct competition with GE’s new AC6000CW series. The units were equipped with radial steering trucks, AC traction motors, and isolated safety cabs with shock absorbers. Operational flexibility compared to UP’s smaller units plagued them from the beginning and UP retired all of its 6000 HP EMD units by 2008.