View source for 6-8-6

{{Short description|Locomotive wheel arrangement}}
[[File:WheelArrangement 6-8-6.svg|thumb|300px|Front of locomotive to the left]]
[[File:PRR S2.jpg|thumb|300px|The single S2, {{Abbr|No.|Number}} 6200, in a PRR promotional image.]]
Under the [[Whyte notation]] for the classification of [[steam locomotive]]s by [[wheel arrangement]], '''{{nowrap|6-8-6}}''' represents the arrangement of six unpowered [[leading wheel]]s, eight powered and coupled [[driving wheel]]s, and six unpowered [[trailing wheel]]s.

Other equivalent classifications are:
* [[UIC classification]]: 3D3 (also known as German classification and [[Italian classification]])
* [[French classification]]: 343
* [[Turkish classification]]: 410
* [[Swiss classification]]: 4/10.

The only known example of the 6-8-6 wheel arrangement is the experimental [[Pennsylvania Railroad]] [[Pennsylvania Railroad class S2|S2]] [[steam turbine locomotive]].<ref>{{Harvnb|Staufer|Pennypacker|1962|pp=240–242}}</ref>

== Notes ==
{{Reflist}}

== References ==
* {{Staufer-Pennsy}}

{{whyte types}}

[[Category:6-8-6 locomotives| ]]
[[Category:Whyte notation|8,6-8-6]]

{{steam-loco-stub}}