Union Pacific 3967

Union Pacific 3967
Type and origin Power type Steam Designer Otto Jabelmann Builder American Locomotive Company (ALCO) Serial number 69777 Build date 1942
Specifications Configuration: ​  • Whyte 4-6-6-4  • UIC (2′C)C2′ h4g Gauge 4 ft 8 1⁄2 in (1,435 mm) standard gauge Driver dia. 69 in (1,753 mm) Wheelbase 60 ft 4 1⁄2 in (18.402 m) Engine 121 ft 10 7⁄8 in (37.157 m) Engine + tender Adhesive weight 403,700 lb (183,115 kg) Loco weight 627,000 lb (284,000 kg) Tender weight 436,500 lb (198,000 kg) Total weight 1,063,500 lb (482,400 kg) Fuel type Coal, oil Fuel capacity 32 short tons (29 t; 29 long tons) Water cap 25,000 US gal (95,000 l; 21,000 imp gal) Firebox:  • Firegrate area 132 sq ft (12 m2) Boiler 94 in (2,400 mm) Boiler pressure 280 lbf/in2 (1.93 MPa) Heating surface 4,795 sq ft (445.5 m2)  • Tubes 527 sq ft (49.0 m2)  • Flues 3,687 sq ft (342.5 m2)  • Firebox 602 sq ft (55.9 m2) Superheater: ​  • Heating area 2,162 sq ft (200.9 m2) Cylinders Four Cylinder size 21 in × 32 in (533 mm × 813 mm)
Performance figures Maximum speed 70 mph (110 km/h) Tractive effort 97,352 lbf (433.04 kN) Factor of adh. 4.15
Career Operators Union Pacific Railroad Class 4664-3 Last run May 17, 1953 Disposition Scrapped

Union Pacific 3967 was a 4-6-6-4 Challenger built by the American Locomotive Company in 1942 for the Union Pacific Railroad.

History

Union Pacific 3967 was constructed in 1942 by the American Locomotive Company and it was delivered to the Union Pacific Railroad.

The engine became popular when it became the first Union Pacific Excursion Star, after it pulled an excursion for the Rocky Mountain Railroad Club from Denver, Colorado to Laramie, Wyoming on May 17, 1953.

In May of 1993, Union Pacific Heavy Challenger #3985 had masqueraded as #3967 as part of the 40th anniversary of the Rocky Mountain Railroad Club excursion, in which the original 3967 pulled the same excursion on May 17, 1953.

See also

• Union Pacific 3985
• Union Pacific Challenger

Sources

• Welsh, Joe (2008). Union Pacific's Streamliners. Voyageur Press. ISBN 9781616731151. Search this book on
• Wright, Roy (1942). American Engineer and Railroad Journal - Volume 116. Simmons-Boardman Publishing Corporation. Search this book on
• Solomon, Brian (2014). The Twilight of Steam: Great Photography from the Last Days of Steam Locomotives in America. Voyageur Press. ISBN 978-0760345863. Search this book on

Further reading

• Trains - Volume 4. Kalmbach Publishing Company. 1944. Search this book on

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