Uintah Railway 0-6-2 Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 20 (Locobase 12801)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 27, , and Uintah Railway Assorted Steam Locomotive diagrams supplied in August 2013 by Allen Stanley from his extensive Rail Data Exchange. See also George E Long, "The Uintah Railway: The Crookedest Railroad in the West", dated May 1972 at [], last accessed on 30 June 2011. Works numbers 25896 in July 1905 and 25953 in August.

Both of these tanks never left the Gilsonite Route's rails from the time they were delivered to the line's closure in 1939. They traveled the troublesome alignment described in Long's account. As exciting as the prospect of decades of mining Gilsonite, a nearly pure hydrocarbon, from its remote location with no competition may have been: "There was though only one "hitch," and that was the mountain itself. The only feasible place to cross this obstruction was at 8,500 foot Baxter Pass, This pass was named after Frank and Charles Baxter who were promoters of the Gilsonite business."

Oops. Well, they could go around it, right? Well:

"There was no other alternative place to cross this barrier in order to reach their holdings at Dragon. This would mean grades of 7.5 percent and even 65 degree curves in places, a situation practically unheard of in the history of railroading. There was mile after mile of these sharp curves and steep grades. There weren't many level stretches on the entire track. Nonetheless, it was surveyed and construction soon started."

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID12,801
RailroadUintah Railway
Number in Class2
Road Numbers20-21
Number Built2
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.25 / 2.21
Engine Wheelbase (ft / m)13.17 / 4.01
Ratio of driving wheelbase to overall engine wheebase 0.55
Overall Wheelbase (engine & tender) (ft / m)13.17 / 4.01
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)56,000 / 25,401
Engine Weight (lbs / kg)62,000 / 28,123
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)62,000
Tender Water Capacity (gals / ML)970 / 3.67
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT) 1.50
Minimum weight of rail (calculated) (lb/yd / kg/m)31 / 15.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)34 / 864
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)13" x 18" / 330x457
Tractive Effort (lbs / kg)12,168 / 5519.32
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.60
Heating Ability
Firebox Area (sq ft / m2)49 / 4.55
Grate Area (sq ft / m2) 9.25 / 0.86
Evaporative Heating Surface (sq ft / m2)509 / 47.30
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)509 / 47.30
Evaporative Heating Surface/Cylinder Volume184.07
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1480
Same as above plus superheater percentage1480
Same as above but substitute firebox area for grate area7840
Power L12472
Power MT291.95

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