Alco RSD-4 (E1663) and RSD-5 (E1664)

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Data Sheet Information Compiled by: JEAN-DENIS BACHAND
Updated: 20 May 2005 RSD-4 Drawing by: Jean-Denis Bachand
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Engine Builder: Alco Engine: 4-cycle Model 244 V12
Bore & Stroke 9" X 10.5"
RPM (Maximum / Minimum) 1025 / 400
Main Generator: GE - GT581 RSD-4 HP: 1500 / RSD-5 HP: 1600
Gear Ratio: 74:18 Speed: 65 mph
Trucks: Tri-Mount (6-Wheel) Configuration: D-D
Traction Motor Blowers: Mechanical Driven (2) Model: ?
Weight: 356,000 lbs / 360,000 Traction Motors: GE 752 (six)
Tractive Effort (starting) 89,000 / 90,000 lbs @ 25% Tractive Effort (continuous): 78,750 / 79,500 lbs @ 12 mph
Multiple Unit Capability: Yes Dynamic Braking: Yes
Auxilary Generator: GE GMG139 Alternator: not applicable
Air Brake: Westinghouse Model: 24L
Compressor: Westinghouse Model: 3CDC
Boiler Type: -- Lbs/hr: --
Quantity Built: 36 (RSD-4s) and 204 (RSD-5s) Dates: 3/1951 to 8/1951 (RSD-4) and 3/1952 to 3/1956 (RSD-5)
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Exterior Dimensions RSD-4 / RSD-5
Total Length 55'-11" / 56'-05.75"
Pilot to Pilot 48'-02" / 48'-02"
Wheel Diameter 40" / 40"
Truck Wheel Base 12'-06" / 12'-06"
Height to Top Engine Hood 12'-02" / 12'-02"
Height to Top Cab Hood 14'-05" / 14'-09"
Cab Width 10'-00" / 10'-00"
Top Walkway Width 7'-04" / 7'-04"
Walkway Width 5'-00" / 5'-00"
Engine Hood Width 5'-05" / 5'-00"
Center Bolster 34'-09" / 34'-09"
Center Front Truck to Front Pilot 6'-07" / 6'-07"
Center Rear Tucrk to Rear Pilot 6'-07" / 6'-07"
Distance between Truck Centers 45'-11" / 45'-11"
Minimum Turning Radious 21 degrees / 21 degrees
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Fuel Oil: 800 Lubricating Oil: 200
Engine Cooling Water: 250 Sand Capacity: 22 cu. ft.
Options: Dynamic Brakes
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RSD-5 Drawing by: Jacques Belanger
Reference Sources:
  • Extra 2200 South, Issues 58 & 59
  • ATSF Mechanical Data Book
  • PRR Mechanical Data Book

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