Sierra No. 3

Specifications
Specifications
Configuration:;
• Whyte	4-6-0
• UIC	2'C
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	2 ft 2 in (660 mm)
Driver dia.	4 ft 8 in (1,422 mm)
Fuel type	New: Coal; Now: Oil
Boiler pressure	150 psi (1,000 kPa)
Cylinders	Two, outside
Cylinder size	17 in × 24 in (432 mm × 610 mm)
Valve gear	Stephenson
Valve type	Slide valves

Type and origin
Type and origin
Power type	Steam
Builder	Rogers Locomotive and Machine Works
Serial number	4493
Build date	March 26, 1891

Sierra No. 3
Sierra No. 3
	Sierra Railway No. 3 hauling its first train on July 3, 2010, after its overhaul
Power type
Type and origin
Power type	Steam
Builder	Rogers Locomotive and Machine Works
Serial number	4493
Build date	March 26, 1891
Configuration:;
Specifications
Configuration:;
• Whyte	4-6-0
• UIC	2'C
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	2 ft 2 in (660 mm)
Driver dia.	4 ft 8 in (1,422 mm)
Fuel type	New: Coal; Now: Oil
Boiler pressure	150 psi (1,000 kPa)
Cylinders	Two, outside
Cylinder size	17 in × 24 in (432 mm × 610 mm)
Valve gear	Stephenson
Valve type	Slide valves
Tractive effort
Performance figures
Tractive effort	17,470 lbf (77,710 N)
Operators
Career
Operators	Prescott & Arizona Central Railway; Sierra Railroad; Railtown 1897 State Historic Park;
Numbers	PACR 3; SRC 3
Official name	W.N. Kelly
Retired	1932
Restored	1948
Current owner	Railtown 1897 State Historic Park
Disposition	Operational

Sierra No. 3, often called the "Movie Star locomotive", is a 19th-century 4-6-0 "Ten-Wheeler" type steam locomotive owned by the State of California and preserved and operated by the Railtown 1897 State Historic Park in Jamestown, California.

William L. Withhuhn, the former Transportation History curator at the Smithsonian Institution, described the locomotive's historical and cultural significance:

Sierra Railway No. 3 has appeared in more motion pictures, documentaries, and television productions than any other locomotive. It is undisputedly the image of the archetypal steam locomotive that propelled the USA from the 19th century into the 20th.

Built in 1891, the locomotive returned to operation in July 2010 after a 14-year absence from service and a three-year-long overhaul, requiring the replacement of its original boiler. It was listed on the National Register of Historic Places in 2023.