Rowland Lumber Company 2-6-2 "Prairie" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 6 (Locobase 16081)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 45, p. 22. (Thanks to Chris Hohl for his 9 May 2015 email and spreadsheet pointing out the lack of an entry for the number 6 and for supplying the detail.) Works number was 38085 in August 1912.

Rail weights on this North Carolina logging railroad were a very light 25-30 lb/yard (12.5-15 kg/metre) rail.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID16,081
RailroadRowland Lumber Company
Number in Class1
Road Numbers6
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.83 / 2.39
Engine Wheelbase (ft / m)20.58 / 6.27
Ratio of driving wheelbase to overall engine wheebase 0.38
Overall Wheelbase (engine & tender) (ft / m)39.69 / 12.10
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)37,500 / 17,010
Engine Weight (lbs / kg)51,000 / 23,133
Tender Loaded Weight (lbs / kg)37,000 / 16,783
Total Engine and Tender Weight (lbs / kg)88,000 / 39,916
Tender Water Capacity (gals / ML)2000 / 7.58
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)21 / 10.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)36 / 914
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)11" x 16" / 279x406
Tractive Effort (lbs / kg)7314 / 3317.58
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.13
Heating Ability
Firebox Area (sq ft / m2)55 / 5.11
Grate Area (sq ft / m2)14 / 1.30
Evaporative Heating Surface (sq ft / m2)435 / 40.41
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)435 / 40.41
Evaporative Heating Surface/Cylinder Volume247.18
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2240
Same as above plus superheater percentage2240
Same as above but substitute firebox area for grate area8800
Power L13873
Power MT683.08

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Wes Barris