Alco C-643 (DL-643)

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Data Sheet Information Compiled by: JEAN-DENIS BACHAND
New: 12 April 2005 Drawing by: JEAN-DENIS BACHAND
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Engine Builder: American Locomotive Co. Engine: Two 4-cycle Model 251C V12
Bore & Stroke 9" X 10.5"
RPM (maximum / minimum) 1050 / 375
Main Generator: Voith Hydraulic Horsepower: 4300
Trucks: Trimount Configuration: C-C
Gear Ratio: 78:22 Speed: 77 mph
Weight: 378,000 lbs. Traction Motors: GE 752 (Six)
Traction Motor Blowers: Voith Type and Number: Torque - Three
Tractive Effort (starting) ?? lbs @ 25% Tractive Effort (continuous): ?? Lbs. @ 11 mph
Multiple Unit Capability: Yes Dynamic Braking: Yes
Auxilary Generator: GE 5GY27A Alternator: --
Air Brake: Westinghouse Model: 26L
Compressor: Westinghouse Model: 3CDB
Boiler Type: Steam (Vapor-Clarkson) PSI: 275 (3000 lbs capacity)
Quantity Built: 3 Date: September 1964
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Exterior Dimensions C-643H
Total Length 75'10"
Pilot to Pilot 71'-06"
Wheel Diameter 40"
Truck Wheel Base 13'-10"
Height to Top Engine Hood 15'-05"
Height to Top Cab Hood 15'-00"
Cab Width 10'-00"
Walkway Width 5'-01"
Engine Hood Width 10'-00"
Center Bolster 51'-00"
Center Front Truck to Front Pilot 10'-02"
Center Rear Truck to Rear Pilot 9'-04"
Distance between Truck Centers 59'-05"
Minimum Turning Radius 25 degrees
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Fuel Oil: 4000 Gallons Lubricating Oil: 400 Gallons
Engine Cooling Water: 600 Gallons Sand Capacity: 48 Cubic Feet
Equipment & Options:
  • Fuel Oil Heater
  • Speed Recorder
  • Oscillating Headlight
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Reference Sources:
  • SP Mechanical Data Book
  • The Diesel Builders, Vol.2, by John F. Kirkland
  • Alco: A Centennial Remembrance, by Richard T. Steinbrenner

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