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{{Infobox Locomotive|
{{Infobox locomotive
name=ALCO S-6|
| name = ALCO S-6
| image = Hugh llewelyn 1231 (5963970156).jpg
powertype=Diesel-electric|
| alt =
builder=[[American Locomotive Company|ALCO]]|
| caption = SP {{Abbr|No.|Number}} 1231 at El Centro, California, in 1970
buildmodel=S-6|
| powertype = Diesel
gauge={{4ft8.5in}}|
| builder = [[American Locomotive Company|ALCO]]
poweroutput=900 [[horsepower|hp]]|
| ordernumber =
aarwheels=B-B|
| serialnumber =
| buildmodel = S-6
| builddate = May 1955–December 1960
| totalproduction = 126
| rebuilder =
| rebuilddate =
| numberrebuilt =
| aarwheels = B-B
| uicclass = Bo′Bo′
| gauge = {{track gauge|ussg}}
| trucks =
| bogies =
| wheeldiameter =
| trailingdiameter =
| minimumcurve =
| wheelbase =
| length = {{convert|45|ft|5|in|m|2|abbr=on}}
| width = {{convert|10|ft|m|2|abbr=on}}
| height = {{convert|14|ft|8|in|m|2|abbr=on}}
| axleload =
| weightondrivers =
| locoweight = {{convert|230000|lb|t|1|abbr=in}}
| fueltype =
| fuelcap = {{convert|635|usgal|abbr=on}}
| lubecap = {{convert|140|usgal|abbr=on}}
| coolantcap = {{convert|110|usgal|abbr=on}}
| watercap =
| sandcap = {{convert|26|cuft|abbr=on}}
| powersupply =
| consumption =
| watercons =
| primemover = [[American Locomotive Company|Alco]] [[ALCO 251|251A or B]]
| rpmrange = 375–1000 rpm
| enginetype = [[Four-stroke]] [[Diesel engine|diesel]]
| aspiration =
| displacement =
| alternator =
| generator = GE GT-533 (or GE GT-584)
| tractionmotors = 4 × GE 731 (GE 752 optional<ref>{{cite book|last=Strapac|first=Joseph A.|title=Southern Pacific Historic Diesels Volume 18: Alco and GE Diesel Switchers|location=Bellflower, CA|publisher=Shade Tree Books|page=73|date=March 2013|isbn=978-0-930742-44-7}}</ref>)
| headendpower =
| cylindercount = [[Straight 6]]
| cylindersize = {{convert|9|x|10+1/2|in|mm|0|abbr=on}}
| transmission =
| multipleworking =
| maxspeed = {{convert|60|mph|km/h|0|abbr=on}}
| poweroutput = {{convert|900|hp|kW|abbr=on|lk=in}}
| tractiveeffort =
| factorofadhesion =
| trainheating =
| locobrakes =
| locobrakeforce =
| trainbrakes =
| safety =
| operator =
| operatorclass =
| powerclass =
| numinclass =
| fleetnumbers =
| officialname =
| nicknames =
| axleloadclass =
| locale = [[United States]], [[Mexico]]
| deliverydate =
| firstrundate =
| lastrundate =
| retiredate =
| withdrawndate =
| preservedunits =
| restoredate =
| scrapdate =
| currentowner =
| disposition =
| notes =<ref>{{cite web
|url = http://www.thedieselshop.us/DataS6.HTML
|title = ALCO S-6 Data Sheet
|work = The Diesel Shop
|access-date = 2006-11-29}}</ref>
}}
}}
The '''Alco S-6''' (specification '''DL 430''') was a [[diesel–electric powertrain|diesel–electric]] [[switcher locomotive]] 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 [[ALCO S-5|S-5]].
The '''Alco S6''' (DL 461) was a [[diesel-electric locomotive]] of the [[switcher]] type rated at 900&nbsp;[[horsepower]], that rode on two-axle [[bogie|trucks]], having a [[AAR wheel arrangement#B-B|B-B]] wheel arrangement. A [[cow-calf]] version was produced exclusively for [[Oliver Iron Mining]], who bought two: this was the '''SSB-9'''.

== Design ==
Visually indistinguishable from the S-5, the S-6 used an ALCO 251A or 251B prime mover rated at {{convert|900|hp}}. The locomotive rode on two-axle [[Association of American Railroads|AAR]] [[bogie|trucks]], giving a [[AAR wheel arrangement#B-B|B-B]] wheel arrangement. ALCO produced a [[cow–calf]] variant for the [[Oliver Iron Mining Company]] designated SB-8/SSB-9, two sets were produced of this version.<ref>{{Pinkepank diesel spotters guide 2|page=230}}</ref>

== Original owners ==
{| class="wikitable"
!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 (company)|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||
|}

== In popular culture ==
* In ''[[Back to the Future Part III]]'', two double headed S-6 locomotives destroyed the [[DeLorean time machine]], when it returned to 1985.

== See also ==
* [[List of ALCO diesel locomotives]]
* [[List of MLW diesel locomotives]]


==References==
==References==
{{reflist}}
* Sarberenyi, Robert. ''[http://users.inna.net/~jaydeet/s6.htm Alco S5, S6, and SSB9 Original Owners]''.

==External links==
{{commons category|ALCO S-6 locomotives}}
* Sarberenyi, Robert. ''[http://www.trainweb.org/jaydeet/s6.htm Alco S5, S6, and SSB9 Original Owners]''.


{{diesel-loco-stub}}
{{ALCO diesels}}
{{ALCO diesels}}
{{MLW diesels}}
{{Diesel_Switchers}}

[[Category:B-B locomotives]]
[[Category:B-B locomotives]]
[[Category:ALCO locomotives|S6]]
[[Category:ALCO locomotives|S6]]
[[Category:Diesel–electric locomotives of the United States]]
[[Category:Railway locomotives introduced in 1955]]
[[Category:Locomotives with cabless variants]]
[[Category:Standard gauge locomotives of the United States]]
[[Category:Standard gauge locomotives of Mexico]]
[[Category:Diesel–electric locomotives of Mexico]]
[[Category:Shunting locomotives]]


{{diesel-loco-stub}}

Latest revision as of 02:22, 27 October 2024

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+1⁄2 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 GT-533 (or GE GT-584)
Traction motors4 × GE 731 (GE 752 optional[1])
CylindersStraight 6
Cylinder size9 in × 10+1⁄2 in (229 mm × 267 mm)
Performance figures
Maximum speed60 mph (97 km/h)
Power output900 hp (670 kW)
Career
LocaleUnited States, Mexico
[2]

The Alco S-6 (specification DL 430) was a diesel–electric switcher locomotive 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

[edit]

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, two sets were produced of this version.[3]

Original owners

[edit]
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
[edit]

See also

[edit]

References

[edit]
  1. ^ Strapac, Joseph A. (March 2013). Southern Pacific Historic Diesels Volume 18: Alco and GE Diesel Switchers. Bellflower, CA: Shade Tree Books. p. 73. ISBN 978-0-930742-44-7.
  2. ^ "ALCO S-6 Data Sheet". The Diesel Shop. Retrieved 2006-11-29.
  3. ^ Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Milwaukee, Wisconsin: Kalmbach Publishing. p. 230. ISBN 978-0-89024-026-7.
[edit]
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