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    Alco RS-27

    Production Roster    		 Somebody's Large Digital Image Here
    -- Joe Stauber photo (R. Craig collection)
    Reformatted: 20 October 2020
    		Format by: R. Craig
    Original Owner Road Numbers Bldr Numbers Bldr Dates Notes
    Alco (Demonstrator) 640-1 83555 12/1959 Rebuilt to PRR C424 2415 (C424) > Penn Central 2415 > Conrail 2415
    Alco (Demonstrator) 640-2 to 640-3 83556 & 83557 12/1959 Sold to UP 675 & 676 > MLW 675 & 676 > Devco Rwy
    Alco (Demonstrator) 640-4 & 640-5 83558 & 83559 1/1960 Sold to UP 677 & 678 > 678 to Erie Mining as a parts source.
    C&NW 900 83601 3/1962 Traded-in to Alco for C425 > Precision National 900 > Alco Leasing > Peabody Coal 900
    C&NW 901 & 903 83602 & 83604 3/1962 Traded-in to Alco for C425 > Precision National 901 & 903 > GB&W 318 & 316 > Minnesota Commercial 318 & 316
    C&NW 902 83603 3/1962 Traded-in to Alco for C425; sold to GB&W 317
    GB&W 310 83600 11/1960 -
    Pennsylvania RR 2400-2407 83607-83614 10/1962 Conveyed to Penn Central 2400-2407 > Conrail 2400-2407
    Pennsylvania RR 2408-2414 84373-84379 10/1962 Conveyed to Penn Central 2408-2414 > Conrail (2408-2414
    SOO Line 415 & 416 83605 & 83606 4/1962 -
    Union Pacific 675-678 83556 & 83557 12/1959 Ex Alco Demonstrators 640-2 to 640-5; sold to MLW 675-677 > Devco Rwy
    RS-27 Spotting features:
    • Not likely to be mistaken for any other Alco model
    • Short front nose (cab moved forward to facilitate installation of 16-cylinder engine)
    Railraod Abbreviations:
    • C&NW - Chicago & North Western
    • GB&W - Green Bay & Western
    • MLW - Montreal Locomotive Works
    • PRR - Pennsylvania RR
    • UP - Union Pacific
    -
    Technical Data

    Data Sheet by: JEAN-DENIS BACHAND

    		 Somebody's Large Digital Image Here

    Drawing by: Jacques Belanger

    Engine Builder: Alco 4-cycle Model 251B V12
    Horsepower: 2400
    Bore & Stroke: 9" X 10.5" RPM (Maximum / Minimum): 1025 / 400
    Gear Ratio: 74:18 (70 mph) 65:18 (80 mph) Weight: 265,000 lbs
    Truck: 4-Wheel (B-B) Traction Motors: GE 752 (four)
    Multiple Unit Capability: Yes Dynamic Braking: Yes
    Main Generator: GE GT581D2 Alternator: GE Exciter GY27
    Air Brake: Westinghouse 26L Compressor: Westinghouse 3CDC
    Quantity Built: 27 (12/1959 to 10/1962)
    - -
    Total Length: 58'-10" Pilot to Pilot: 52'-00"
    Truck Wheel Base: 9'-04" Wheel Diameter: 40"
    Height to Top Engine Hood: 14'-06" Height to Top Cab Hood: 15'-00"
    Cab Width: 10'-00" Engine Hood Width: 5'-11"
    Center Bolster: 31'-00" Distance between Truck CenterS: 40'-04"
    Minimum Turning Radious 30 degrees
    - -
    Fuel Oil: 2400 Lubricating Oil: 250
    Engine Cooling Water: 320 Sand Capacity: 48 cu. ft.
    Options:
    • Fully Automatic Transition
    • Air Signal Lines
    • Seal Beam with TrainLines Control
    • Railroad Model Craftsman, Issue June 1966
    • Diesel Locomotive, Vol. 2 by Model Railroader (Bob Hayden)
    • The Diesel Builders, Vol.2 by John F. Kirkland
    • Extra 2200 South Newsletter

    New: 9 April 2005
    -
    Somebody's Large Digital Image Here Drawing by: Jean-Denis Bachand

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