Southern Pacific class AC-12: Difference between revisions
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{{Infobox |
{{Infobox locomotive |
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| name = Southern Pacific class AC-12 |
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| image = Southern Pacific 4294, a cab-forward steam locomotive.jpg |
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| imagesize = 300 |
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gauge={{railgauge|ussg}}| |
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| caption = [[Southern Pacific 4294]] on display at the [[California State Railroad Museum]] |
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railroadclass=AC-12| |
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| totalproduction = 20 |
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| gauge = {{track gauge|ussg|allk=on}} |
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roadnumber=4275 – 4294| |
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numinclass=20| |
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| locotenderweight= {{convert|977900|lb|kg t|abbr=on}} |
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| cylindercount = 4 (simple articulated) |
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disposition=scrapped; one preserved| |
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| operator = [[Southern Pacific Railroad]] |
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| operatorclass = AC-12 |
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| fleetnumbers = 4275–4294 |
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| disposition = One preserved ([[Southern Pacific 4294|#4294]]); remainder [[scrap]]ped |
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[[Southern Pacific Railroad]]'s '''AC-12''' class of [[cab forward]] [[steam locomotive]]s was the last class of steam locomotives ordered by Southern Pacific. They were built by [[Baldwin Locomotive Works]] during [[World War II]], with the first, number 4275, entering service on October 27, 1943, and the last, 4294, on March 19, 1944. |
[[Southern Pacific Railroad]]'s '''AC-12''' class of simple [[articulated locomotive|articulated]] [[4-8-8-2]] [[cab forward]] [[steam locomotive]]s was the last class of steam locomotives ordered by Southern Pacific. They were built by [[Baldwin Locomotive Works]] during [[World War II]], with the first, number 4275, entering service on October 27, 1943, and the last, 4294, on March 19, 1944. The locomotives were effectively a conventional 2-8-8-4 locomotive running in reverse; the tender being coupled at the smokebox end of the locomotive. This was made possible by the use of oil-firing. The distinct features of these locomotives include: a streamlined front with white band, an air horn on the front, a streamlined pilot, a SP 12 wheel box tender, and air compressors mounted on the smokebox. Southern Pacific used these locomotives all over its system, but they were extremely famous for working on Donner Pass & Cascade Summit. |
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SP used the AC-12s for a little over a decade with the first retirements occurring on April 5, 1955, and the last on September 24, 1958. |
SP used the AC-12s for a little over a decade with the first retirements occurring on April 5, 1955, and the last on September 24, 1958. Only one AC-12, [[Southern Pacific 4294|SP 4294]], has survived into preservation and is now on display at the [[California State Railroad Museum]]. |
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== References == |
== References == |
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{{Commons}} |
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* {{cite book| |
* {{cite book|author1=Diebert, Timothy S. |author2=Strapac, Joseph A. |name-list-style=amp | title=Southern Pacific Company Steam Locomotive Conpendium| publisher=Shade Tree Books| year=1987| isbn=0-930742-12-5}} |
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{{SP cab forward locomotives}} |
{{SP cab forward locomotives}} |
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{{SP AC class locomotives}} |
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[[Category:Southern Pacific Railroad locomotives|AC-12]] |
[[Category:Southern Pacific Railroad locomotives|AC-12]] |
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[[Category:Railway locomotives introduced in 1943]] |
[[Category:Railway locomotives introduced in 1943]] |
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[[Category:Steam locomotives of the United States]] |
[[Category:Steam locomotives of the United States]] |
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[[Category:Standard gauge locomotives of the United States]] |
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[[Category:Freight locomotives]] |
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[[Category:Cab_forward_steam_locomotives]] |
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Revision as of 23:26, 3 February 2024
 | This article relies largely or entirely on a single source. (July 2016) |
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 Southern Pacific 4294 on display at the California State Railroad Museum | |||||||||||||||||||||||||
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Southern Pacific Railroad's AC-12 class of simple articulated 4-8-8-2 cab forward steam locomotives was the last class of steam locomotives ordered by Southern Pacific. They were built by Baldwin Locomotive Works during World War II, with the first, number 4275, entering service on October 27, 1943, and the last, 4294, on March 19, 1944. The locomotives were effectively a conventional 2-8-8-4 locomotive running in reverse; the tender being coupled at the smokebox end of the locomotive. This was made possible by the use of oil-firing. The distinct features of these locomotives include: a streamlined front with white band, an air horn on the front, a streamlined pilot, a SP 12 wheel box tender, and air compressors mounted on the smokebox. Southern Pacific used these locomotives all over its system, but they were extremely famous for working on Donner Pass & Cascade Summit.
SP used the AC-12s for a little over a decade with the first retirements occurring on April 5, 1955, and the last on September 24, 1958. Only one AC-12, SP 4294, has survived into preservation and is now on display at the California State Railroad Museum.
References
Wikimedia Commons has media related to Southern Pacific class AC-12.
- Diebert, Timothy S. & Strapac, Joseph A. (1987). Southern Pacific Company Steam Locomotive Conpendium. Shade Tree Books. ISBN 0-930742-12-5.