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The FM H-12-46 was a light road switcher of Fairbanks-Morse design manufactured exclusively by the Canadian Locomotive Company from October, 1951–January, 1953 for the Canadian National Railway. Only thirty of the 1,200 hp, six-cylinder opposed piston engine locomotives were produced. The units (assigned #7600–#7629) were configured in an A1A-A1A wheel arrangement, mounted atop a pair of three-axle trucks.

FM H-12-46
Type and origin Power type Diesel Builder Fairbanks-Morse Model H-12-44 Build date October 1951 — January 1953 Total produced 30
Specifications Configuration: ​  • AAR A1A-A1A Gauge 4 ft 8+1⁄2 in (1,435 mm) Prime mover FM 38D-8 1/8 Engine type 2-stroke diesel Aspiration Roots blower Displacement 6,222 in³ (101.8 L) Cylinders 6 (Opposed piston) Cylinder size 8.125 in × 10 in (206 mm × 254 mm) Transmission DC generator, DC traction motors Loco brake Straight air Train brakes Air
Performance figures Maximum speed 60  mph (97 km/h) Power output 1,200 hp (895 kW)
Career Locale North America

Externally, they boasted many of the same Raymond Loewy design influences found on the larger and more powerful FM H-16-66 model, some of which were built during the same period. None of the units are known to exist today.

References

• "Fairbanks-Morse 38D8 Diesel Engine". PSRM Diesel Locomotives. Archived from the original on May 26, 2006. Retrieved January 1, 2006.
• Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Milwaukee, Wisconsin: Kalmbach Publishing. ISBN 978-0-89024-026-7.
• Kirkland, John F. (November 1985). The Diesel Builders Volume 1: Fairbanks-Morse and Lima-Hamilton. Interurban Press. ISBN 0-916374-69-6.

External links

• Fairbanks-Morse H12-44, H12-44TS & H12-46 Roster

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