Southern Pacific 5021

Southern Pacific 5021
Type and origin
Power type Steam
Builder American Locomotive Company (ALCO)
Serial number 66793
Build date 1926
Specifications
Configuration 4-10-2
Gauge 4 ft 8 1⁄2 in (1,435 mm) standard gauge
Driver dia. 63 1⁄2 in (1,613 mm)
Adhesive weight 317,500 lb (144,000 kg)
Tender cap 16,152 US gal (61,140 l; 13,449 imp gal) water
4,912 US gal (18,590 l; 4,090 imp gal) fuel oil
Boiler pressure 225 psi (1,550 kPa)
Cylinders 3
Cylinder size (inside) 25 in × 28 in (635 mm × 711 mm) dia × stroke
(outside) 25 in × 32 in (635 mm × 813 mm) dia × stroke
Performance figures
Tractive effort 84,200 lbf (375,000 N)
96,540 lbf (429,400 N) with booster
Career
Operators Southern Pacific Railroad
Class SP-2
Number in class 49
Numbers 5021
Retired 1955
Current owner 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 range 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.

The engine itself made a cameo appearance in the 1994 Kidsongs Video: Boppin' with the biggles.

References


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