Agricola de Santa Barbara 2-4-2 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 13984)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 44, p.174. Works numbers were 38345 in September 1912.

Wood burner identical to the Bom Jardin locomotive shown in Locobase 19379, but slightly heavier.

Principal Dimensions by Steve Llanso of Middle Run Media
Class1
Locobase ID13984
RailroadAgricola de Santa Barbara
CountryBrazil
Whyte2-4-2ST
Number in Class1
Road Numbers1
GaugeMetre
Number Built1
BuilderBaldwin
Year1913
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)5 / 1.52
Engine Wheelbase (ft / m)17.79 / 5.42
Ratio of driving wheelbase to overall engine wheelbase 0.28
Overall Wheelbase (engine & tender) (ft / m)17.79 / 5.42
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)25,000 / 11,340
Engine Weight (lbs / kg)40,000 / 18,144
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)40,000 / 18,144
Tender Water Capacity (gals / ML)600 / 2.27
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)21 / 10.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)37 / 940
Boiler Pressure (psi / kPa)160 / 1100
High Pressure Cylinders (dia x stroke) (in / mm)9" x 16" / 229x406
Tractive Effort (lbs / kg)4764 / 2160.92
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.25
Heating Ability
Tubes (number - dia) (in / mm)66 - 1.5" / 38
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 8.23 / 2.51
Firebox Area (sq ft / m2)40 / 3.72
Grate Area (sq ft / m2) 7.20 / 0.67
Evaporative Heating Surface (sq ft / m2)251 / 23.32
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)251 / 23.32
Evaporative Heating Surface/Cylinder Volume213.06
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1152
Same as above plus superheater percentage1152
Same as above but substitute firebox area for grate area6400
Power L13777
Power MT666.15

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