USRA 2-6-6-2 articulated locomotive

E452576

Mallet-type locomotive USRA standard locomotive design articulated locomotive steam locomotive

The USRA 2-6-6-2 articulated locomotive was a standardized World War I–era American steam freight engine featuring a Mallet-type articulated wheel arrangement designed for heavy, slow freight service on steep grades and curving track.

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Observed surface forms (1)

Surface form	Occurrences
Mallet articulated locomotives	1

Statements (44)

Predicate	Object
instanceOf	Mallet-type locomotive ⓘ USRA standard locomotive design ⓘ articulated locomotive ⓘ steam locomotive ⓘ
administration	United States Railroad Administration NERFINISHED ⓘ
articulationType	Mallet NERFINISHED ⓘ
boilerType	fire-tube boiler ⓘ
brakingSystem	air brakes ⓘ
category	USRA locomotive design NERFINISHED ⓘ articulated steam locomotive ⓘ freight steam locomotive ⓘ
configuration	articulated ⓘ
control	locomotive engineer ⓘ
controlSystem	manual valve gear ⓘ
countryOfOrigin	United States of America ⓘ surface form: United States
designedDuring	World War I NERFINISHED ⓘ
designedFor	American mainline railroads ⓘ curving track ⓘ heavy trains at low speed ⓘ operation on heavy grades ⓘ operation on sharp curvature ⓘ slow freight service ⓘ steep grades ⓘ
designer	United States Railroad Administration NERFINISHED ⓘ
designGoal	high tractive effort at low speed ⓘ standardization across US railroads ⓘ
driveType	steam-powered driving wheels ⓘ
era	World War I era ⓘ
frontEngineUnit	six driving wheels ⓘ
fuelType	coal ⓘ
historicalRole	standard heavy freight locomotive design in WWI USRA era ⓘ
leadingWheels	two wheels ⓘ
powerType	steam ⓘ
primaryUse	freight service ⓘ heavy freight service ⓘ
rearEngineUnit	six driving wheels ⓘ
serviceType	mountain freight ⓘ road freight ⓘ
standardizationProgram	USRA standard locomotive program NERFINISHED ⓘ
trackAdaptation	curves ⓘ steep gradients ⓘ
trailingWheels	two wheels ⓘ
wheelArrangement	2-6-6-2 ⓘ
wheelArrangementNotationSystem	Whyte notation NERFINISHED ⓘ

Referenced by (2)

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

USRA standard steam locomotive designs → hasPart → USRA 2-6-6-2 articulated locomotive ⓘ

Baldwin Locomotive Works → notableWork → USRA 2-6-6-2 articulated locomotive ⓘ

this entity surface form: Mallet articulated locomotives