Rio Doce 2-4-2 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class Bias Fortes (Locobase 12098)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 19, p. 72 Works number was 13904 in January 1894.

The specifications for this little saddle tank included hauling 50 tons up a 3% grade. Later operated by Central do Brasil as #15.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassBias Fortes
Locobase ID12098
RailroadRio Doce
CountryBrazil
Whyte2-4-2ST
Number in Class1
Road Numbers1
GaugeMetre
Number Built1
BuilderBurnham, Williams & Co
Year1894
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)5 / 1.52
Engine Wheelbase (ft / m)18.17 / 5.54
Ratio of driving wheelbase to overall engine wheelbase 0.28
Overall Wheelbase (engine & tender) (ft / m)18.17 / 5.54
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)22,000 / 9979
Engine Weight (lbs / kg)36,000 / 16,329
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)36,000 / 16,329
Tender Water Capacity (gals / ML)500 / 1.89
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)18 / 9
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)41 / 1041
Boiler Pressure (psi / kPa)130 / 11
High Pressure Cylinders (dia x stroke) (in / mm)10" x 16" / 254x406
Tractive Effort (lbs / kg)4312 / 1955.89
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.10
Heating Ability
Tubes (number - dia) (in / mm)78 - 1.5" / 38
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 8.11 / 2.47
Firebox Area (sq ft / m2)46.86 / 4.36
Grate Area (sq ft / m2) 7.90 / 0.73
Evaporative Heating Surface (sq ft / m2)295 / 27.42
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)295 / 27.42
Evaporative Heating Surface/Cylinder Volume202.83
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1027
Same as above plus superheater percentage1027
Same as above but substitute firebox area for grate area6092
Power L13233
Power MT647.96

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