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Specifications
Specifications
Configuration:;
• Whyte	4-6-0
• UIC	2′C n2, later 2′C h2
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Adhesive weight	114,000 lb (52,000 kg)
Loco weight	148,500 lb (67,400 kg)
Fuel type	Coal
Boiler pressure	165 lbf/in2 (1,140 kPa)
Cylinders	Two, outside
Cylinder size	19 in × 24 in (483 mm × 610 mm)
Valve gear	Stephenson
Valve type	Slide

Type and origin
Type and origin
Power type	Steam
Builder	American Locomotive Company (Cooke Works)
Serial number	2054
Model	UP Class T-57
Build date	October 1890

Union Pacific 1243
Union Pacific 1243
	UP No. 1243 on static display at the Durham Museum
Power type
Type and origin
Power type	Steam
Builder	American Locomotive Company (Cooke Works)
Serial number	2054
Model	UP Class T-57
Build date	October 1890
Configuration:;
Specifications
Configuration:;
• Whyte	4-6-0
• UIC	2′C n2, later 2′C h2
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Adhesive weight	114,000 lb (52,000 kg)
Loco weight	148,500 lb (67,400 kg)
Fuel type	Coal
Boiler pressure	165 lbf/in2 (1,140 kPa)
Cylinders	Two, outside
Cylinder size	19 in × 24 in (483 mm × 610 mm)
Valve gear	Stephenson
Valve type	Slide
Tractive effort
Performance figures
Tractive effort	21,300 lbf (95 kN)
Factor of adh.	5.35
Operators
Career
Operators	Union Pacific Railroad
Numbers	UP 1477; UP 1243
Retired	1956
Restored	1990 (cosmetically)
Current owner	Durham Museum,; Union Pacific Railroad
Disposition	On static display

Union Pacific 1243 is a preserved 4-6-0 "Ten Wheeler" type steam locomotive on display at the Durham Museum in Omaha, Nebraska. Built in 1890, No. 1243 is one of the oldest "Ten Wheelers" owned by the Union Pacific Railroad (UP). It is often named the "Harriman Engine" because, along with sister locomotive No. 1242 currently displayed in Cheyenne, Wyoming, it is the only engine owned by the Union Pacific Railroad from the era when E. H. Harriman controlled the Union Pacific.

History

UP No. 1243 was built in 1890 by the American Locomotive Company's Cooke Works, originally numbered as UP No. 1477. It operated on various branch lines of the Union Pacific in Nebraska. It was renumbered 1243 in 1915.^[2] From the 1930s until 1956, the No. 1243 operated on the railroad's Encampment Branch in Wyoming. That same year, the No. 1243 was retired from active service.

Following retirement, No. 1243 resided in Rawlins, Wyoming before going to Cheyenne, Wyoming. In 1990, the 1243 was cosmetically restored and transported on a flat car in a special train to Omaha, Nebraska, where it was placed on display at the Durham Museum in October 1996.

UP 1243 is now a static exhibit at the museum, with no plans to restore it to running condition. It currently sits inside the Trish and Dick Davidson Gallery exhibit, along with a variety of other railroad equipment.