Bombardier HR-412

The Bombardier HR-412, also known as the MLW HR-412, was a 4 axle, 2,400 horsepower (1.8 MW) freight locomotive manufactured in Montreal, Quebec, Canada. Ten were built for Canadian National Railway in between September and November 1981, numbered 2580–2589, and one was built for Bombardier as a demonstrator in May 1982, numbered BBD 7000. BBD 7000 was later sold to Canadian National.[1]

Bombardier HR-412
Type and origin
Power typeDiesel-electric
BuilderBombardier
Serial numberM6115-01 to M6115-10
ModelHR-412
Build dateSeptember 1981–May 1982
Total produced11
Specifications
Configuration:
​
 • AARB-B
 • UICBo′Bo′
Gauge4 ft 8+1⁄2 in (1,435 mm)
Wheel diameter40 inches (1.0 m)
Minimum curve30°
WheelbaseBetween truck centers:
47 ft 7 in (14.50 m)
Truck wheelbase:
9 ft 4 in (2.84 m)
Length61 feet 0 inches (18.59 m)
Width10 feet 5 inches (3.18 m)
HeightCab roof: 14 ft 11 in (4.55 m)
Overall: 15 ft 7 in (4.75 m)
Loco weight272,000 lb (123,000 kg)
or 136 short tons (121 long tons; 123 t)
Fuel typeDiesel
Fuel capacity2,000 US gal (7,600 L)
Lubricant cap.160 US gal (610 L)
Coolant cap.200 US gal (760 L)
Sandbox cap.56 cu ft (1.6 m3)
Prime moverAlco 251C
RPM range450 - 1050
Engine typeV12 4-stroke diesel
AspirationMechanically-assisted turbocharger
GeneratorGE GTA17
Cylinders12
Cylinder size9 in (23 cm) diameter × 10+1⁄2 in (27 cm) stroke
Loco brakeStraight air, Dynamic
Train brakes26-L air
Performance figures
Maximum speed67 mph (108 km/h)
Power output2,400 hp (1.8 MW)
Tractive effort60,000 lbf (267 kN)
Career
OperatorsCanadian National Railway
ClassMR-20d
Numbers2580-2589 (later 3580-3589)
LocaleNorth America

The model designation stood for HR - High Reliability, 412 - 4 axles, 12 cylinder engine. The HR-412 was designed as the successor to the MLW M-420.

See also

References
  1. Foster, Gerald L. (1996). A field guide to trains of North America. Boston: Houghton Mifflin. p. 74. ISBN 0-395-70112-0.


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