Bingham & Garfield Other Articulated Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 100 (Locobase 6941)

Data from B&G - UCCO Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection and from the Utah Rails site and, accessed 1 July 2005. The firebox heating surface includes 5 arch tubes of 60 sq ft.

The Bingham Central originally was created in 1907 to ensure that the ore from the Bingham mines would get to the Garfield smelter. In 1908 Utah Copper organized the system as the B & G and began surveying the route immediately. Construction took the next 3 years with the first trip of this mighty Mallet and 41 new cars occurring on 14 Sept 1911.

The first four engines were produced individually in June (works #49978), July (50018), and November (50483) 1911 and August 1912 (51710). Three more followed with only detail differences in March 1917 (56788 & 56965) and November 1918 (59492). A chart in the diagram book shows that the locomotives varied in the number of tubes (262, 261, 256, 264, 263, 255, and 265, respectively).

Very few 16-coupled Mallets with no auxiliary axles were built for US operation, but the B & G found them satisfactory.

Kennecott Copper Corporation bought Utah Copper (parent of the Bingham & Garfield) in 1936. In 1947, Kennecott inaugurated the new, all-electric Copperton Low Line that supplanted the steam-powered Utah Copper Division line.

Specifications by Steve Llanso of Sweat House Media
Locobase ID6941
RailroadBingham & Garfield
Number in Class7
Road Numbers100-103, 104-106
Number Built7
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase14.17'
Engine Wheelbase40.17'
Ratio of driving wheelbase to overall engine wheebase 0.35
Overall Wheelbase (engine & tender)59.12'
Axle Loading (Maximum Weight per Axle)55900 lbs
Weight on Drivers462840 lbs
Engine Weight462840 lbs
Tender Light Weight237100 lbs
Total Engine and Tender Weight699940 lbs
Tender Water Capacity13200 gals
Tender Fuel Capacity (oil/coal)19 tons
Minimum weight of rail (calculated)96 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter51"
Boiler Pressure130 psi
High Pressure Cylinders (dia x stroke)26" x 28"
Low Pressure Cylinders (dia x stroke)41" x 28" (2)
Tractive Effort58497 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 7.91
Heating Ability
Firebox Area411 sq. ft
Grate Area100 sq. ft
Evaporative Heating Surface5598 sq. ft
Superheating Surface1577 sq. ft
Combined Heating Surface7175 sq. ft
Evaporative Heating Surface/Cylinder Volume325.35
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation13000
Same as above plus superheater percentage15860
Same as above but substitute firebox area for grate area65185
Power L15642
Power MT214.99

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