Canadian National No. 4803 is a photograph by Lingfai Leung which was uploaded on January 1st, 2016.
Canadian National No. 4803
This diesel-electric road-switching locomotive appears to be mechanically complete and was previously restored to its pre-1960 paint scheme by the... more
Title
Canadian National No. 4803
Artist
Lingfai Leung
Medium
Photograph - Photographs
Description
This diesel-electric road-switching locomotive appears to be mechanically complete and was previously restored to its pre-1960 paint scheme by the railway in 1984.
The rare high-nose GP7 was built by General Motors Diesel of London, Ontario, in August, 1953, as CN 7558. High-nose GP7's and GP9's - so called because their cab was located behind part of the hood, with limited forward visibility - were among the most significant of the diesel locomotive types which displaced steam power during the 1950's. It is powered by a 16-cylinder two cycle diesel engine in an �Vee� configuration. Each of the sixteen cylinders displaces 567 cubic inches, or about six times the entire displacement of the engine in a modern Toyota Corolla. CN 4803 is also equipped with electrodynamic braking, evidenced by the bulge at the roofline on either side of the long hood. Electrodynamic braking is a process by which the electric motors are turned into generators and the current load produced by the momentum of the train is then dissipated as heat.
In 1984, 4803 was donated to the City by the railway in a public ceremony involving then-Mayor Art Eggleton. A brass plaque commemorating that event is held by CN's public affairs office on Front Street and will be returned to the City for installation on the locomotive when the museum is established.
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�2015 Lingfai Leung
Uploaded
January 1st, 2016
