Usina Paranagua / Usina Pitanga 2-4-2 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class Assarua (Locobase 13965)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 44, p. 84 and 90. Works number was 40165 in July 1913.

Baldwin supplied this double-ended saddle-tank design to several sugar-processing companies in Brazil at the time. Most were ordered by F Benn & Son. This saddle-tank went to a large sugar plantation in southern Brazil near the Parana River.


Class Elisa (Locobase 14509)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 54, p.348 Works number was 41416 in May 1914.

One of several wood-burning saddle-tanks delivered to Brazilian sugar tram roads during this period.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassAssaruaElisa
Locobase ID13965 14509
RailroadUsina ParanaguaUsina Pitanga
CountryBrazilBrazil
Whyte2-4-2ST2-4-2ST
Number in Class11
Road Numbers2
GaugeMetreMetre
Number Built11
BuilderBurnham, Williams & CoBaldwin
Year19131914
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 5.67 / 1.735 / 1.52
Engine Wheelbase (ft / m)20 / 6.1017.79 / 5.42
Ratio of driving wheelbase to overall engine wheelbase 0.28 0.28
Overall Wheelbase (engine & tender) (ft / m)20 / 6.1017.79 / 5.42
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)37,000 / 16,78324,000 / 10,886
Engine Weight (lbs / kg)57,000 / 25,85539,000 / 17,690
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)725 / 2.75600 / 2.27
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)31 / 15.5020 / 10
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 106737 / 940
Boiler Pressure (psi / kPa)160 / 1100160 / 1100
High Pressure Cylinders (dia x stroke) (in / mm)12" x 18" / 305x4579" x 16" / 229x406
Tractive Effort (lbs / kg)8393 / 3807.014764 / 2160.92
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.41 5.04
Heating Ability
Tubes (number - dia) (in / mm)91 - 1.75" / 4466 - 1.5" / 38
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 8.96 / 2.73 8.23 / 2.51
Firebox Area (sq ft / m2)55.30 / 5.1440 / 3.72
Grate Area (sq ft / m2) 8.40 / 0.78 7.20 / 0.67
Evaporative Heating Surface (sq ft / m2)425 / 39.48251 / 23.32
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)425 / 39.48251 / 23.32
Evaporative Heating Surface/Cylinder Volume180.38213.06
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation13441152
Same as above plus superheater percentage13441152
Same as above but substitute firebox area for grate area88486400
Power L133353777
Power MT397.43693.90

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