Southern Pacific AC-9
E649259
The Southern Pacific AC-9 was a class of massive articulated 2-8-8-4 steam locomotives built in the late 1930s for the Southern Pacific Railroad, primarily used for heavy freight service across challenging western routes.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Southern Pacific AC-9 canonical | 2 |
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
2-8-8-4 locomotive
ⓘ
cab-forward type locomotive ⓘ steam locomotive class ⓘ |
| allUnitsScrapped | yes ⓘ |
| articulationType | Mallet-type ⓘ |
| boilerPressure | 250 psi ⓘ |
| buildDate | 1939 ⓘ |
| builder | Lima Locomotive Works NERFINISHED ⓘ |
| configuration | 2-8-8-4 ⓘ |
| conversion | converted from coal to oil firing ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| cylinderArrangement | compound articulated ⓘ |
| cylinderCount | 4 ⓘ |
| designer | Lima Locomotive Works NERFINISHED ⓘ |
| distinctiveFeature |
large Vanderbilt tender
ⓘ
semi-streamlined skyline casing ⓘ |
| driverDiameter | 63 in ⓘ |
| fleetNumbers | 3800–3811 ⓘ |
| fuelType |
coal
ⓘ
oil (after conversion) ⓘ |
| gauge | standard gauge ⓘ |
| introduced | late 1930s ⓘ |
| manufacturer | Lima Locomotive Works NERFINISHED ⓘ |
| notableRoute |
El Paso–Tucson line
NERFINISHED
ⓘ
Rio Grande Division NERFINISHED ⓘ |
| operator | Southern Pacific Railroad NERFINISHED ⓘ |
| powerType | steam ⓘ |
| preservedUnits | 0 ⓘ |
| primaryUse |
freight service
ⓘ
heavy freight service ⓘ |
| railwayCompany | Southern Pacific Railroad NERFINISHED ⓘ |
| railwayRegion | American West NERFINISHED ⓘ |
| regionOfOperation |
Arizona
NERFINISHED
ⓘ
New Mexico NERFINISHED ⓘ Texas NERFINISHED ⓘ |
| retirementDate | early 1950s ⓘ |
| scrapped | yes ⓘ |
| serviceRole | drag freight ⓘ |
| serviceType | freight ⓘ |
| successor | diesel-electric locomotives on Southern Pacific ⓘ |
| superheater | yes ⓘ |
| totalProduced | 12 ⓘ |
| trackGauge | 1,435 mm ⓘ |
| tractiveEffort | 124,300 lbf (approx.) ⓘ |
| UICClassification | (1D)D2 ⓘ |
| usedFor |
challenging western grades
ⓘ
long heavy freight trains ⓘ |
| valveGear | Walschaerts ⓘ |
| wheelArrangement | 2-8-8-4 ⓘ |
| whyNotCabForward | coal-fired ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.