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ALCO S-6

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This is an old revision of this page, as edited by Blacksmokemonster (talk | contribs) at 21:35, 21 May 2020 (Original owners: Changed Western Maryland "Railroad" to "Railway". WM Railroad was gone as an entity in 1908, and the WM Railway was its legal successor and the company that ordered Alco S6's.). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

ALCO S-6
SP No. 1231 at El Centro, California, in 1970
Type and origin
Power typeDiesel
BuilderALCO
ModelS-6
Build dateMay 1955–December 1960
Total produced126
Specifications
Configuration:
 • AARB-B
 • UICBo′Bo′
Gauge4 ft 8+12 in (1,435 mm)
Length45 ft 5 in (13.84 m)
Width10 ft (3.05 m)
Height14 ft 8 in (4.47 m)
Loco weight230,000 lb (104.3 tonnes)
Fuel capacity635 US gal (2,400 L; 529 imp gal)
Lubricant cap.140 US gal (530 L; 120 imp gal)
Coolant cap.110 US gal (420 L; 92 imp gal)
Sandbox cap.26 cu ft (0.74 m3)
Prime moverALCO 251A or B
RPM range375–1000 rpm
Engine typeFour-stroke diesel
GeneratorGE GT533
Traction motors4 × GE 731
CylindersStraight 6
Cylinder size9 in × 10+12 in (229 mm × 267 mm)
Performance figures
Maximum speed60 mph (97 km/h)
Power output900 hp (670 kW)
Career
LocaleUnited States, Mexico
[1]

The Alco S-6 (specification DL 430) was a diesel-electric locomotive of the switcher type constructed by ALCO of Schenectady, New York; a total of 126 locomotives were built between May 1955 and December 1960. The S-6 was an improved version of the earlier S-5.

Design

Visually indistinguishable from the S-5, the S-6 used an ALCO 251A or 251B prime mover rated at 900 horsepower (670 kW). The locomotive rode on two-axle AAR trucks, giving a B-B wheel arrangement. ALCO produced a cow-calf variant for the Oliver Iron Mining Company designated SB-8/SSB-9.[2]

Original owners

Railroad Quantity Road Number Notes
Allied Chemical Company 1 110
ARMCO Steel 1 1202
B. Perini & Sons Construction Company 1 101 to Upper Merion and Plymouth Railroad 101
Belt Railway of Chicago 1 420
Ferrocarril Chihuahua al Pacífico 1 60 Renumbered 106
Cia Fundidora de Hierro y Acero 3 1–3
Ferrocarril del Pacífico 24 701–723
Ferrocarriles Nacionales de México 1 5300
Northern Pacific Railway 1 750 to Burlington Northern Railroad 950
Ohio River Company (ORCo) 1 56
Republic Steel 3 153,317,318
Secretaria de Comunicaciones de Obras Publicas (SCOP) 3 7133-1,2,3 to Ferrocarril del Sureste (same numbers)
Sheffield Steel 2 15,16
Southern Pacific Railroad 70 1033–1082,4634–4645 renumbered 1200–1257, 1270–1281
South Buffalo Railway 6 40–45
Tennessee Copper 1 107
Upper Merion and Plymouth Railroad 1 61
U.S. Pipe and Foundry 1 38
Columbia Geneva Steel 1 1
Western Maryland Railway 2 151,152
Ferrocarriles Unidos de Yucatán 1 301

See also

References

  1. ^ "ALCO S-6 Data Sheet". The Diesel Shop. Retrieved 2006-11-29.
  2. ^ Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Milwaukee, Wisconsin: Kalmbach Publishing. p. 230. ISBN 978-0-89024-026-7.