John L Roper Lumber Company 0-4-4 "Forney" Locomotives in the USA

Ringaboy: Retro Railware

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Class Details by Steve Llanso of Sweat House Media

Class 5 (Locobase 13890)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 40 p. 1. Works number was 37808 in June 1912.

Many US logging railroads were built on the standard gauge, albeit to very light standards. And this little oil-burning tank design was at home at any gauge.

Specifications by Steve Llanso of Sweat House Media
Class5
Locobase ID13,890
RailroadJohn L Roper Lumber Company
CountryUSA
Whyte0-4-4T
Number in Class1
Road Numbers5
GaugeStd
Number Built1
BuilderBurnham, Williams & Co
Year1912
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)5 / 1.52
Engine Wheelbase (ft / m)14.50 / 4.42
Ratio of driving wheelbase to overall engine wheebase 0.34
Overall Wheelbase (engine & tender) (ft / m)14.50 / 4.42
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)24,000 / 10,886
Engine Weight (lbs / kg)39,000 / 17,690
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)39,000
Tender Water Capacity (gals / ML)600 / 2.27
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)300 / 1.10
Minimum weight of rail (calculated) (lb/yd / kg/m)20 / 10
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 838
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)9" x 14" / 229x356
Tractive Effort (lbs / kg)4673 / 2119.64
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.14
Heating Ability
Firebox Area (sq ft / m2)34 / 3.16
Grate Area (sq ft / m2) 8.10 / 0.75
Evaporative Heating Surface (sq ft / m2)230 / 21.37
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)230 / 21.37
Evaporative Heating Surface/Cylinder Volume223.12
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1296
Same as above plus superheater percentage1296
Same as above but substitute firebox area for grate area5440
Power L13415
Power MT627.40