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Patar knight (talk | contribs) Adding local short description: "Steam locomotive wheel arrangement", overriding Wikidata description "locomotive wheel arrangement" |
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{{Short description|Steam locomotive wheel arrangement}}
{{one source|date=February 2015}}
Under the [[Whyte notation]] for the classification of [[steam locomotive]]s, '''4-2-2-0''' represents the [[wheel arrangement]] of four [[leading wheel]]s on two axles, four independently driven [[driving wheel]]s on two axles, and no [[trailing wheel]]s. The arrangement became known as ''double single''.<ref>{{cite book |url=https://books.google.com/books?id=DuTvDwAAQBAJ&pg=PA63 |title=L&SWR Drummond Passenger and Mixed Traffic Locomotive Classes |year=2020 |publisher=Pen and Sward Transport |language=en |page=63|isbn=978-1-5267-6984-8 }}</ref><ref>{{cite web|title=The Evolution of Compound Locomotives |periodical=|publisher=|url=http://mikes.railhistory.railfan.net/r043.html |url-status=|format=|access-date=2023-07-08|archive-url=|archive-date=|last=|year=1935|language=en|pages=|quote=}}</ref>
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