Locomotive Definitions
0-6-0 S Switcher
0-8-0 SE Switcher (8 wheel)
2-6-0 M Mogul
2-8-0 C Consolidation (a few early ones once called Mastodon along with
others below)
2-10-0 D Decapod
4-4-0 E Eightwheeler (commonly called American by many others)
4-6-0 T Tenwheeler
4-8-0 Tw Twelvewheeler (earlier called Mastodon on SP)
4-10-0 - Named El Gobernador - only one - scrapped before class names
2-6-2 Pr Prairie
2-6-2T s Suburban (note small "s")
2-8-2 Mk Mikado
2-10-2 F Fourteenwheeler (commonly called "Decapods" or "Decs" by
railroaders)
2-8-4 B Berkshire
4-6-2 P Pacific
4-8-2 Mt Mountain
4-10-2 SP Southern Pacific
4-8-4 GS Golden State - changed to General Service in WW II
2-6-6-2 MM Mallet Mogul (compound)
4-6-6-2 MM Mallet Mogul (compound)
4-6-6-2 AM Articulated Mogul (simple)
2-8-8-2 MC Mallet Consolidation (compound)
2-8-8-2 AC Articulated Consolidation (simple)
2-8-8-4 AC Articulated Consolidation (simple)
4-8-8-2 AC Articulated Consolidation (simple)
Kyle K. Wyatt
Curator of History & Technology
California State Railroad Museum
111 "I" Street
Sacramento, CA 95814
My work address is: kwyatt@parks.ca.gov
My personal address is: kylewyatt@aol.com
[from the R&LHS Newsgroup.]
posted from CPRR Discussion Group at 8:55 AM
4 Comments:
4-6-6-2 Mallet mogul (compound, SP), Articulated Mogul (simple, SP)
2-10-2 Two Ten Two (UP, class TTT)
4-8-4 Four Eight Four (UP, class FEF)
4-10-2 Four Ten Two (UP class FTT)
2-8-8-2 Simple Articulated (UP class SA - ex C&O engines), Mallet Compounds (UP class MC - earlier new engines and ex N&W engines)
2-8-8-0 Mallet Compound (UP, class MC), Simple Articulated - Consolidations (UP, class SA-C)
4-6-6-4 Challenger Simple Articulated (UP class CSA - the first design of UP Challengers. The later and more famous group were UP class "4664")
4-6-4 I think it should read "Hudson" - a typo
2-8-0 Consolidation seems to have been left out. Some early classes of SP
2-8-0s were also called Mastodon (grouped with the SP 4-8-0s)
0-6-2, 0-6-4 Bogie - Mason bogies all were built with either 4 or 6 wheel trailing trucks. They are all technically single Fairlies. I'm not familiar with any "bogies" with 2 wheel trailing trucks.
Kyle K. Wyatt
Curator of History & Technology
California State Railroad Museum
111 "I" Street
Sacramento, CA 95814
My work address is: kwyatt@parks.ca.gov
My personal address is: kylewyatt@aol.com
Re: Steam Wheel Arrangement Names/Nicknames
0-4-0 Four-coupled or four-wheeled switcher, Goat, Planet
0-4-2 Patentee four-couple, Lion, Vulcan
0-6-0 Six-coupled or six-wheeled switcher
0-8-0 Eight-coupled or eight-wheeled switcher
0-10-0 Ten-coupled or ten-wheeled switcher, Decapod (UK)
0-10-2 Union switcher
2-2-0 Planet single
2-2-2 Patentee single, Jenny Lind, Pioneer
2-4-0 Porter, John Bull
2-4-2 Columbia
2-6-0 Mogul
2-6-2 Prairie
2-6-4 Adriatic
2-8-0 Consolidation, Mastodon (SP)
2-8-2 Mikado, Bee, MacArthur (US during WWII), Mud Hen (D&RGW)
2-8-4 Berkshire, Big Emma (L&N), Big Mike (W&LE), Kanawha (C&O), Lima
(B&M/IC), 4000 (B&M)
2-10-0 Decapod (US)
2-10-2 Santa Fe, Bohunk (C of G), Central (IC), Decapod, Dec (SP),
Fourteen-wheeler, Mudsucker (B&M), Russian Bohunk (Gainesville
Midland), Two Ten Two (UP)
2-10-4 Texas, Colorado (CB&Q), Selkirk (CP)
2-12-0 Centipede
4-2-0 Jervis, Six-wheeler
4-2-2 Bicycle, Single
4-2-4 Pearson, Single
4-4-0 American, Eight-wheeler, Standard
4-4-2 Atlantic, Chautauqua (Brooks Loco Works), Milwaukee (CMStP&P)
4-4-4 Jubilee, Double-ender, Lady Baltimore (B&O), Reading (Reading)
4-4-6 Four-couple
4-6-0 Ten-wheeler, Casey Jones (?)
4-6-2 Pacific
4-6-4 Hudson, Baltic (Europe/CMStP&P), Shore Line (NYNH&H)
4-8-0 Twelve-wheeler, Mastodon (SP)
4-8-2 Mountain, Mohawk (NYC), New Haven (NYNH&H)
4-8-4 Northern, Confederation (CN), Dixie (NC&StL), Four Eight Four
(UP), General Service & Golden State (SP), Generals & Governors
(RF&P), Greenbrier (C&O), Niagara (NYC, NdeM), Pocono (DL&W), Potomac
(WM), Wyoming (LV)
4-10-0 Mastodon, El Gobernador (SP)
4-10-2 Southern Pacific, Four Ten Two & Overland (UP), Super Mountain
4-12-2 Union Pacific
4-14-4 Soviet AA20, Adriev
4-4-4-4 T-1 duplex (PRR), George Emerson (B&O)
4-4-6-4 Q-2 duplex (PRR)
4-6-4-4 Q-1 duplex (PRR)
6-2-0 Crampton, John Stevens
6-4-4-6 S-1 duplex (PRR)
0-6-6-0 Articulated, Old Maud (B&O)
0-8-8-0 Angus
2-6-6-0 Denver & Salt Lake
2-6-6-2 Articulated
2-6-6-4 Norfolk & Western
2-6-6-6 Allegheny (C&O), Blue Ridge (Vgn)
2-8-8-0 Bull Moose, Mallet compound & Simple articulated
consolidation (UP)
2-8-8-2 Chesapeake (C&O), Articulated consolidation (simple, SP),
Mallet consolidation (compound, SP), Mallet compound & Simple
articulated (UP)
2-8-8-4 Yellowstone, Articulated consolidation (simple, SP)
2-8-8-8-2 Erie triplex
2-8-8-8-4 Virginian triplex
2-10-10-2 Virginian
4-6-6-2 Articulated mogul (simple, SP), Mallet mogul (compound, SP)
4-6-6-4 Challenger, Challenger simple articulated (UP)
4-8-8-4 Big Boy (UP)
Includes only reciprocating rigid-framed and articulated locomotives (less Fairlies and Garratts); no turbines, tank engines (although many have the wheel arrangements below), etc. Most common name first and the other names and nicknames alphabetically with a reference to the road or place to which a given name is associated if known.
—Mark Zogg
[from the R&LHS Newsgroup.]
I just rechecked the list for the later classes of the SP Cab Aheads. The list has them listed as though the cab was in the normal rear position, as a 2-8-8-4. As I recall, there was an argument presented that the wheel arrangement standard counts wheels in order from the smokebox to the firebox. Of course an argument can be made that the 4-wheel truck under the firebox of the SP Cab Aheads was in fact designed as a lead truck, not as a normal trailing truck, and that the wheel arrangement should be 4-8-8-2 - Articulated Consolidation (SP class AC).
Kyle K. Wyatt
Curator of History & Technology
California State Railroad Museum
111 "I" Street
Sacramento, CA 95814
[from the R&LHS Newsgroup.]
... In the case of there Central Pacific, "El Gobernador" ("The Governor" in Spanish, in honor of Gov. Stanford, President of the Central Pacific, who ordered its construction, to the surprise of his partners) the name is in fact for the locomotive, which happens to have a 4-10-0 wheel arrangement. It is sort of like saying that "Jupiter" is a name for the 4-4-0 wheel arrangement because a locomotive of that wheel arrangement and name happened to represent the Central Pacific at the driving of the Golden Spike in May 1869. The Central Pacific named all their locomotives built through 1869, then stopped the practice. The exception was El Gobernador in 1884.
In many ways I am much more comfortable with including such wheel arrangement and type names as Big Boy, Pennsy Duplex, and even Mudhen, than I am El Gobernador. I tend to think of the Lady Baltimore in the same way as I do El Gobernador - a name for a locomotive, not a wheel arrangement or a type. Just as Lord Baltimore is not another name for the 4-6-2 wheel arrangement. Lady Baltimore just happens to have an unusual wheel arrangement.
Kyle K. Wyatt
Curator of History & Technology
California State Railroad Museum
111 "I" Street
Sacramento, CA 95814
[from the R&LHS Newsgroup.]
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