EMD SD90MAC
The EMD SD90MAC is a model of AAR wheel arrangement#C-C, C-C Diesel-electric transmission, diesel-electric locomotive produced by Electro-Motive Diesel, General Motors Electro-Motive Division (EMD). It is, with the EMD SD80MAC, SD80MAC, one of the largest single-engined locomotives produced by EMD and among the most powerful diesel-electric locomotives, surpassed only by the dual-engined EMD DDA40X, DDA40X. The SD9043MAC is the variant, using a 16-cylinder EMD 710, 710G engine instead of the EMD 265, H-engine, which was originally intended as a temporary alternative while EMD tried to solve the EMD 265, H-engine's issues. However, the accompanying upgrade program was never utilized by its customers. The SD90MAC's features include radial steering trucks with Alternating Current, AC traction motors and an isolated cab (locomotive), safety cab which is mounted on shock absorbers to lessen vibrations in the cab. The SD90MAC, like the SD80MAC, EMD SD70ACe, SD70ACe, and EMD SD70M- ...
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