Pacific

E757142

Pacific is a type of steam locomotive wheel arrangement, typically featuring a 4-6-2 configuration widely used for express passenger services.

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Statements (47)

Predicate Object
instanceOf Whyte notation wheel arrangement
steam locomotive wheel arrangement
hasAlternativeNotation 2-3-1 (French classification)
231 (French numeric form)
2′C1′ (UIC classification)
4-6-2 (British and American usage)
hasDesignAdvantage ability to carry wide firebox behind driving wheels
balanced running at speed
good adhesion for fast trains
hasDrivingAxles 3
hasDrivingWheels 6
hasFeature good high-speed stability
good steaming capacity
large driving wheels
hasLeadingAxles 2
hasLeadingTruckType two-axle leading truck
hasLeadingWheels 4
hasTrailingAxles 1
hasTrailingTruckType single-axle trailing truck
hasTrailingWheels 2
hasTypicalDrivingWheelDiameter between 72 and 80 inches
hasWhyteNotation 4-6-2
isAlsoBuiltFor broad gauge
narrow gauge
isClassifiedBy number of leading, driving, and trailing wheels
isCommonGauge standard gauge
isDevelopmentOf Atlantic (4-4-2) wheel arrangement NERFINISHED
Ten-wheeler (4-6-0) wheel arrangement NERFINISHED
isDocumentedIn Whyte notation literature NERFINISHED
steam locomotive classification manuals
isNamedAfter Pacific Ocean NERFINISHED
isRelatedTo Hudson (4-6-4) wheel arrangement NERFINISHED
Mikado (2-8-2) wheel arrangement
Mountain (4-8-2) wheel arrangement NERFINISHED
isSupersededBy diesel locomotives
electric locomotives
isUsedFor express mail trains
mainline passenger services
supports large firebox
typicalUse express passenger services
high-speed passenger trains
wasCommonUntilEra mid 20th century
wasIntroducedInEra early 20th century
wasWidelyUsedIn Asia NERFINISHED
Australia NERFINISHED
Europe NERFINISHED
North America NERFINISHED

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Standard Passenger Pacific of the PRR configurationName Pacific
subject surface form: Pennsylvania Railroad K4s class
LNER Class A3 locomotiveType Pacific
LNER Class A1 nicknamed Pacific