Southern Pacific 5021

Southern Pacific 5021

Infobox Locomotive
name=Southern Pacific 5021
powertype=Steam
railroad=Southern Pacific Railroad
roadnumber=5021
whytetype=4-10-2
cylindercount=3
builder=American Locomotive Company (ALCO)
builddate=1926
serialnumber=66793
weightondrivers=317,500 lb.
driversize=63½ in diameter
gauge=4 ft 8½ in (1435 mm)
boilerpressure=225 psi
cylindersize=(inside) 25 in dia × 28 in stroke
(outside) 25 in dia × 32 in stroke
tractiveeffort=84,200 lbf
96,540 lbf with booster
tenderc

4,912 gal. fuel oil
numinclass=49
railroadclass=SP-2
retiredate=1955
currentowner=Railway and Locomotive Historical Society
disposition=static display at the Los Angeles County Fairgrounds, Pomona, California

Southern Pacific Railroad (SP) number 5021 is an SP-2 class 4-10-2 steam locomotive built in 1926 by ALCO at their Schenectady, New York, shops. It is the only member of this class of SP locomotives to be preserved, and it is one of only four 3-cylinder locomotives preserved in North America.

It was designed to haul mixed freight and passenger trains over the Sierra Nevada Mountains between Northern California and Nevada. Later in its career, 5021 was shifted to service in Oregon, until its retirement in 1955. SP donated 5021 to the Railway and Locomotive Historical Society on March 8 1956.

5021 is currently on static display at the Los Angeles County Fairgrounds in Pomona, California.

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