Chateaugay 2-6-0 "Mogul" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 15 (Locobase 12505)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 22, p. 122. Works number was 16737 in May 1899.

Very similar to the Rockwood & Tennessee River Mogul shown in Locobase 12358, this example operated in New York State. The specs outline the stiff demands imposed by narrow gauge, mountain operation: "Estimated to haul about 150 tons up straight grade of 169 ft per mile [3.2%]. " Maximum curvature on the main line was 16 degrees, in the sidings 26 degrees.

It began operation on 5 December 1887 between Plattsburg, New York to Lake Saranac. It ran two passenger trains a day along the entire length of the line. Soon after the 15 and 16 arrived on the property, however, the Delaware & Hudson gained control of the line and widened the gauge to standard.

Out of a job in the East, the 15 & 16 went to the Tonopah in Nevada as 2 and 1, but that line converted to standard gauge in 1905. Oregon's Sumpter Valley Railroad in Baker City rescued the two and put them into service in 1906. The 1 was wrecked in 1927 and the 2 retired in 1930.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID12,505
Number in Class2
Road Numbers15-16
Number Built2
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11 / 3.35
Engine Wheelbase (ft / m)17.83 / 5.43
Ratio of driving wheelbase to overall engine wheebase 0.62
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)66,600 / 30,209
Engine Weight (lbs / kg)74,700 / 33,883
Tender Loaded Weight (lbs / kg)56,000 / 25,401
Total Engine and Tender Weight (lbs / kg)130,700 / 59,284
Tender Water Capacity (gals / ML)2600 / 9.85
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)37 / 18.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 1118
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)16" x 20" / 406x508
Tractive Effort (lbs / kg)15,825 / 7178.11
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.21
Heating Ability
Firebox Area (sq ft / m2)91.30 / 8.49
Grate Area (sq ft / m2)13.20 / 1.23
Evaporative Heating Surface (sq ft / m2)1020 / 94.80
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1020 / 94.80
Evaporative Heating Surface/Cylinder Volume219.16
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2112
Same as above plus superheater percentage2112
Same as above but substitute firebox area for grate area14,608
Power L13722
Power MT369.62

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Wes Barris