GE Dash 8-40CM
Introduction The '''GE C40-8M''' is a 6-axle diesel locomotive built by GE Transportation Systems from 1990 to 1994.It is part of the GE Dash 8 Series of freight locomotives, and is often referred to as a '''Dash 8-40CM'''.Mechanically identical to the Dash 8-40CW, the Dash 8-40CM was constructed only for Canadian railways, with a production total of 84 units. It is distinguished from the Dash 8-40CW by the addition of a full-width "Draper Taper" style cowl body, of which they are the last locomotives built with this feature, and the use of a Canadian-specific nose and windshield configuration. The trucks also differ; all units built ride on Dofasco Hi-Ad trucks identical to locomotives built by Montreal Locomotive Works, Bombardier, and Morrison-Knudsen.
Technical The Dash 8-40CM is powered by a  7FDL-16 diesel engine driving a GE GMG187 main alternator. The power generated by the main alternator drives six GE 752AG or 752AH direct current traction motors, each with a gear ratio of 83:20 and connected to  wheels which allow the Dash 8-40CM a maximum speed of 70 mph (110 km/h).Depending on customer options, the Dash 8-40CM carries approximately  of diesel fuel,  of lubricating oil, and  of coolant. Like most North American diesel locomotives, the Dash 8-40CM uses normal water for cooling. The Dash 8-40CM has a tractive effort rating of  at . Overall dimensions for the Dash 8-40CM are  in Length,  in height and  in width.
Original owners  Railroad Quantity Road numbers NotesBC Rail264601-4626To CN with BCOL reporting marks. All have cab bell. 4609 is the last one in service. 4618 preserved at Alberta Railway MuseumCanadian National Railway552400-2454First 30 ordered have high mount cab bell. None are left in serviceQuebec North Shore and Labrador Railway3401-403Sold to AEX. AEX renumbered them to 100017-100019.Scrapped in 2016
Preservation * In September 2023, Canadian National donated former BCOL #4618 to the Alberta Railway Museum.
See also *List of GE locomotives
References === Notes ====== Further reading ===* * *