Hammond & Houltonville 2-6-2 "Prairie" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 20 (Locobase 13712)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 36, p. 128. Works number was 35631 in December 1910.

This 22-mile logging road connected the two namesake towns in Louisiana. Run by the East Union Lumber and Manufacturing Company, the H & H operated this logging Praririe for decades.

Principal Dimensions by Steve Llanso of Sweat House Media
Class20
Locobase ID13,712
RailroadHammond & Houltonville
CountryUSA
Whyte2-6-2
Number in Class1
Road Numbers20
GaugeStd
Number Built1
BuilderBaldwin
Year1910
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.17 / 2.80
Engine Wheelbase (ft / m)23.75 / 7.24
Ratio of driving wheelbase to overall engine wheebase 0.39
Overall Wheelbase (engine & tender) (ft / m)44.87 / 13.68
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)61,000 / 27,669
Engine Weight (lbs / kg)84,000 / 38,102
Tender Loaded Weight (lbs / kg)60,000 / 27,216
Total Engine and Tender Weight (lbs / kg)144,000 / 65,318
Tender Water Capacity (gals / ML)3000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)34 / 17
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)46 / 1168
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)15" x 20" / 381x508
Tractive Effort (lbs / kg)14,967 / 6788.93
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.08
Heating Ability
Firebox Area (sq ft / m2)82 / 7.62
Grate Area (sq ft / m2)14 / 1.30
Evaporative Heating Surface (sq ft / m2)991 / 92.07
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)991 / 92.07
Evaporative Heating Surface/Cylinder Volume242.26
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2520
Same as above plus superheater percentage2520
Same as above but substitute firebox area for grate area14,760
Power L14726
Power MT512.41

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