Southern Pacific 5021

Last updated
Southern Pacific 5021
SP 5021 San Bernardino, CA February 1972.jpg
Southern Pacific 5021 as it appeared in February 1972
Type and origin
Power typeSteam
Builder American Locomotive Company
Serial number66793
Build date1926
Specifications
Configuration:
   Whyte 4-10-2
Gauge 4 ft 8+12 in (1,435 mm) standard gauge
Driver dia.63+12 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 pressure225 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
Maximum speed70 mph (113 km/h) (Passenger Service)
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 class49
NumbersSP 5021
Retired1955 (revenue service)
1963 (excursion service)
Restored1961
Current ownerRailway and Locomotive Historical Society
DispositionOn static display at the RailGiants Train Museum in Pomona, California

Southern Pacific 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 five three-cylinder locomotives preserved in North America.

Contents

History

The locomotive was built in 1926 by Alco. It was designed to haul mixed freight and passenger trains over the Sierra Nevada range between northern California and Nevada. Later in its career, No. 5021 was shifted to service in Oregon, where it remained until its retirement in 1955.

Southern Pacific donated 5021 to the Railway and Locomotive Historical Society on 8 March 1956. In 1961 it was fired up and used for operation on the museum's spur line. However, the Southern Pacific did not like this, so they were forced to pull the tracks in 1963. Following this, 5021 was stored in the roundhouse of the Atchison, Topeka and Santa Fe Railway. While it was stored, a possible excursion career for 5021 was being arranged by the Santa Fe, but the plans were dropped.

5021 sat in Southern Pacific's San Bernardino yard until 1975, when it was moved to the Southern Pacific Taylor Yard in Glendale, CA. Shortly after, it was moved back to the RailGiants Train Museum, when the GS-4 class 4449 was on display with the American Freedom Train in the Los Angeles County Fairgrounds. As of 2023, 5021 is on permanent display at the Fairplex railway exhibit in Pomona, California.

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