MLW M-420 / 420R/ 420B

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Data Sheet Information Compiled by: JEAN-DENIS BACHAND
New: 16 April 2005 Drawings by: Jacques Belanger
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Engine Builder: Montreal Locomotive Works Engine: 4-cycle Model 251C V12
Bore & Stroke 9" X 10.5"
RPM (Maximum / Minimum) 1050 / 450
Main Generator: GE GTA17 Horsepower: 2400
Gear Ratio: 74:18 Speed: 67 mph
4-Wheel Configuration: B-B
Traction Motor Blowers: Chicago Model: Mechanical Driven (2)
Weight: 272,000 lbs Traction Motors: GE 752 (four)
Tractive Effort (starting) 60,400 lbs @ 25% Tractive Effort (continuous): 35,000/35,000/38,000 lbs @ 8
Multiple Unit Capability: Yes Dynamic Braking: Yes
Auxilary Generator: GE 553 GY27 Alternator: GE Exciter GY2P7
Air Brake: Westinghouse Model: 26LUM
Compressor: Westinghouse Model: 3CDCL
Quantity Built: ?? Dates: ??
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Exterior Dimensions M-420 / 420R/ 420B
Total Length 61'-00"/61'-00"/60'-00"
Pilot to Pilot 52'-04" / 52'-04" / 51'-09"
Wheel Diameter 40"
Truck Wheel Base 9'-04"
Height to Top Engine Hood 15'-06"
Height to Top Cab Hood 14'-10"
Cab Width 10'-04"
Top Walkway Width 9'-08"
Walkway Width 5'-01"
Engine Hood Width 10'-03"
Center Bolster 36'-05"
Center Front Truck to Front Pilot 7'-08"
Center Rear Truck to Rear Pilot 7'-08"
Distance between Truck Centers 47'-05" / 45'-09" / 45'-09"
Minimum Turning Radious 30 degrees
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Fuel Oil: 2500 Lubricating Oil: 216
Engine Cooling Water: 260 Sand Capacity: 56 cu. ft.
Options:
  • Fully Automatic Transition
  • Hi-Adhesion Trucks
  • Air Signal Lines
  • Seal Beam with TrainLines Control
  • Automatic Locomotive Testing
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Somebody's Large Digital Image Here
Somebody's Large Digital Image Here
Drawings by: Jacques Belanger
Reference Sources:
  • Alco: A Centennial Remembrance, by Richard T. Steinbrenner
  • Bombardier Design Data
  • Canadian National Mechanical Data Book

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