Alco RSD-12 (DL702)

The RSD-12 (DL702) Was Built By Alco and MLW
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Data Sheet Information Compiled by: JEAN-DENIS BACHAND
Updated: 20 May 2005 SP Drawing by: Jean-Denis Bachand
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Engine Builder: Alco and Dominion Engineering Works Engine: 4-cycle Model 251B V12
Bore & Stroke 9" X 10.5"
RPM (Maximum / Minimum) 1025 / 400
Main Generator: GE - GT586 1800
Gear Ratio: 74:18 Speed: 65 mph
Tri-Mount 6-Wheel Configuration: C-C
Traction Motor Blowers: Mechanical Driven (2) Model: Stuart
Weight: 350,000 lbs Traction Motors: GE 752 (Four)
Tractive Effort (starting) 81250,000 lbs @ 25% Tractive Effort (continuous): 78,500 lbs @ 6 mph
Multiple Unit Capability: Yes Dynamic Braking: Yes
Auxilary Generator: GE GY27 Alternator:
Air Brake: Westinghouse Model: 24L
Compressor: Westinghouse Model: 3CDC
Boiler Type: Optional Lbs/hr: --
Quantity Built: 161 by Alco / 10 by MLW Dates: 4/1956 to 6/1960 (MLW 10/1962)
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NKP Drawing by: Jacques Belanger
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Exterior Dimensions RS-11
Total Length 58'-01"
Pilot to Pilot 49'-09"
Wheel Diameter 40"
Truck Wheel Base 12'-06"
Height to Top Engine Hood 14'-06"
Height to Top Cab Hood 14'-06"
Cab Width 10'-01"
Top Walkway Width 10'-01"
Walkway Width 5'-01"
Engine Hood Width 9'-11"
Center Bolster 35'-03"
Center Front Truck to Front Pilot 6'-10"
Center Rear Tucrk to Rear Pilot 6'-10"
Distance between Truck Centers 47'-09"
Minimum Turning Radious 30 degrees
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Fuel Oil: 2000 Lubricating Oil: 200
Engine Cooling Water: 250 Sand Capacity: 28 cu. ft.
Options:
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RFFS Drawing by: Jean-Denis Bachand
Reference Sources:
  • Railroad Model Craftsman, March 1966
  • Alco and MLW Design Data Books
  • Canadian National Design Data Book
  • Chespeake & Ohio Mechanical Data Book
  • Pennsylvanic RR Design Data Book

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