Alco S5

Production Roster
Somebody's Large Digital Image Here

Revised: 10 April 2019

Info from: John Komanesky
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Photograph from: John Mech Collection
Original owner Road Numbers Qty. Bldr Numbers Bldr Dates
Alco (demo) 909 1 80915 6/1954
Boston & Maine 860-865 6 80916-80921 6/1954
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Alco S-6

Production Roster
Somebody's Large Digital Image Here

Revised: 20 December 2020

Info from: John Komanesky

Craig Walker photo at Anaheim, California on 16 July 1975
Original owner Road Numbers Qty. Bldr Numbers Bldr Dates
Armco Steel 1202 1 81720 2/1956
Belt Ry. of Chicago 420 1 82297 2/1957
B. Perini & Sons 101 1 81721 2/1956
Columbia Geneva Steel 1 1 82303 9/1957
Northern Pacific 750 1 80922 5/1955
Ohio River Co. 56 1 81717 1/1956
Republic Steel 153 1 82307 10/1959
317, 318 2 82301, 82302 7/1957
Semet-Solvay 110 1 81718 1/1956
Sheffield Steel 15, 16 2 82299. 82300 6/1957
South Buffalo 40 1 81420 11/1955
41 1 81719 4/1956
42-45 4 82293-82296 11-12/1956
Southern Pacific 1033-1039 7 80923-80929 5/1955
1040-1051 12 81290-81301 5-6/1955
1052 1 81433 12/1955
1053-1063 11 81724-81734 6-8/1956
1064-1072 9 81805-81813 8-9/1956
1073-1078 7 81819-81824 11/1956
1079-1090 12 82281-82292 11/1956
4634-4645 12 81421-81432 11-12/1955
Tennessee Copper 107 1 82304 9/1957
U.S. Pipe & Foundry 38 1 81816 10/1956
Western Maryland 151, 152 2 81722, 81723 3/1956

EXPORT

MEXICO

Chihuahua Pacifico 60 1 81715 1/1956
Cia. Fundidora de Hierro y Acero 1, 2 2 82305, 82306 12/1958, 1/1959
3 1 82308 12/1960
Ferrocaril del Pacifico 701-708 8 81302-81309 6-8/1955
709 1 81384 9/1955
710-724 15 81405-81419 9-10/1955
National de Mexico 5300 1 81716 1/1956
Secretarias Communicaciones de Obras Publicas - S.C.O.P. 7133-1, 7133-2 2 81814, 81815 10/1956
7133-3 1 83812 11/1960
Unidos de Yucatan 301 1 83811 11/1960

S5 & S6 Technical Data

Somebody's Large Digital Image Here
New: 2 April 2005 Data Sheet & Drawing by: JEAN-DENIS BACHAND
S5 Engine: Alco 4-cycle 251A (800hp) --- S6 Engine Alco 4-cycle 251B 6L (900-hp) Main Generator: GE - GT581 (see note1)
Bore & Stroke: 9" X 10.5" RPM (Maximum / Minimum): 1000 / 370
Gear Ratio: 74:18 with max. speed: 60 mph Weight: 230,000 lbs
4-Wheel Configuration: B-B Track Motors: GE 731
Tractive Effort (starting) 57,500 lbs @ 30% Tractive Effort (continuous): 46,000 lbs @ 5 mph
Multiple Unit Capability: No Dynamic Braking: Yes
Auxilary Generator: GE GMC139 Air Brake: Westinghouse Model: 26L
S5 Quantity Built: 7 (Dates: 4 & 5/1954) --- S6 Quantity Built: 126 (Dates: 5/55 to 12/1960)
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Total Length: 45'-05" Pilot to Pilot: 36'-06"
Wheel Diameter: 40" Truck Wheel Base: 8'-00"
Height to Top Engine Hood: 12'-03" Height to Top Cab Hood: 14'-08"
Cab Width 10'-00"
Distance between Truck Centers: 30'-00" Minimum Turning Radious: 50 degrees
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Fuel Oil capacity: 635 Lubricating Oil: 140
Engine Cooling Water: 110 Sand Capacity: 26 cu. ft.
Note(s)
  1. Occasionally four GE287 traction motors, from trade-in units, would be installed rather than GE731s.
Options: Dynamic Brakes
  • Dynamic Brakes
  • Air Signal Lines
  • Hump Control
  • Stanley Heater
Reference Sources:
  • Alco Design Data
  • Alco Reference #1 by Bob Liljestrand
  • Brotherhood of Locomotive Firemen and Enginemen Magazine, October 1953

Additions/corrections from: Howard Wise and Karl L. Swartz


Alco SSB-5

Production Roster
Somebody's Large Digital Image Here
- Photograph by: John Kuehl
Oliver Iron Mining 1217A, 1218A 2 81817, 81818 10/1956
1217B, 1218B 2 82311, 82312 10/1956

Source of information: Extra 2200 South and Kalmbach's Diesel Spotters Guide

 

Original upload: 14 November 2009

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