Editing 2-8-2 (section)

{{Short description|Locomotive wheel arrangement}}
{{Use dmy dates|date=December 2019}}
{{Infobox steam wheel arrangement
| name             = 2-8-2 (Mikado)
| image            = WheelArrangement 2-8-2.svg
| alt              = Diagram of one small leading wheel, four large driving wheels joined by a coupling rod, and one small trailing wheel
| caption          = 
| image2           = NKP 639.jpg
| alt2             = 
| caption2         = USRA Light Mikado No. 639 from the [[Nickel Plate Road]]
<!--Equivalent classifications-->
| hatnote          = 
| UIC/Germany/Italy= 1D1, 1'D1'
| French/Spanish   = 141
| Turkish          = 46
| Swiss            = 4/6
| Russian          = 1-4-1
<!--First known tank engine version-->
| date             = 1884
| country          = Australia
| locomotive       = [[Queensland_8D15_class_locomotive|8D15 class]]
| railway          = [[Queensland Rail|Queensland Railways]]
| designer         = 
| builder          = [[Dübs and Company|Dübs & Co.]]
| evolvedfrom      = [[2-8-0]]
| evolvedto        = [[2-8-4]]
| mainbenefit      = Larger coal bunker.
| maindrawback     = 
<!--First known tender engine version-->
| date2            = 1884
| country2         = United States of America
| locomotive2      = ''Calumet''
| railway2         = [[Baltimore and Ohio Chicago Terminal Railroad#History|Chicago & Calumet Terminal Railway]]
| designer2        = 
| builder2         = 
| evolvedfrom2     = [[2-8-0]], [[2-6-2]]
| evolvedto2       = [[2-8-4]], [[2-10-2]]
| mainbenefit2     = Larger firebox aft of drivers
| maindrawback2    = 
<!--First known "True type" version-->
| date3            =1867 
| country3         =United States 
| locomotive3      =No. 82 ''Bee''
| railway3         =[[Lehigh Valley]] 
| designer3        =Alexander Mitchell 
| builder3         =Norris Locomotive Works 
| evolvedfrom3     =[[2-10-0]] 
| evolvedto3       = 
| mainbenefit3     =Better stability on tight curves 
| maindrawback3    = 
}}

Under the [[Whyte notation]] for the classification of [[steam locomotive]]s, '''{{nowrap|2-8-2}}''' represents the [[wheel arrangement]] of two [[leading wheel]]s on one axle, usually in a [[leading truck]], eight powered and coupled [[driving wheel]]s on four axles and two [[trailing wheel]]s on one axle, usually in a [[trailing truck]]. This configuration of steam locomotive is most often referred to as a '''Mikado''',<ref>{{cite web|url=https://www.steamlocomotive.com/locobase.php?country=USA&wheel=2-8-2|title=2-8-2 "Mikado" Locomotives in the USA}}The name comes the first locomotives of this wheel arrangement, made by Baldwin in 1893 for Nihon Tetsudo (Japan Railways), a private railway at the time. </ref> frequently shortened to '''Mike'''.<ref name="steam glossary">{{cite web |url=http://www.railway-technical.com/st-glos.shtml |title=Steam Locomotive Glossary |work=Railway Technical Web Pages |date=28 June 2007 |access-date=8 February 2008 |archive-url=https://web.archive.org/web/20130517230056/http://www.railway-technical.com/st-glos.shtml |archive-date=17 May 2013 |url-status=dead  }}</ref>

It was also at times referred to on some railroads in the United States as the '''McAdoo Mikado''' and, during [[World War II]], the '''MacArthur'''.<ref name="Trains Mag">{{cite web|url=http://trn.trains.com/en/Railroad%20Reference/Ask%20Trains/2006/06/Ask%20Trains%20from%20August%202006.aspx| title=Ask Trains for August 2006| publisher=[[Kalmbach Media|Kalmbach Publishing]]| access-date=29 January 2008}}</ref>

The notation '''2-8-2T'''<!--which redirects here--> indicates a [[tank locomotive]] of this wheel arrangement, the "T" suffix indicating a locomotive on which the water is carried in tanks mounted on the engine rather than in an attached [[tender (rail)|tender]].
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