Industrial E de F de Perus-Pirapora 2-4-0 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class Dr Jambeiro (Locobase 13866)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 39, pp. 237 and Volume 44, p. 190. Works number was 37570 in March 1912 and 39061 in January 1913.

The Brazilian Portland Cement Corporation bought this very small six-wheeler for a very narrow gauge whose main cargo was cement. A duplicate named Dr Sylvio de Campos (#4) followed in the next year.

See Locobase 13867 for a description of the P-P.

Principal Dimensions by Steve Llanso of Middle Run Media

ClassDr Jambeiro
Locobase ID13866
RailroadIndustrial E de F de Perus-Pirapora
CountryBrazil
Whyte2-4-0
Number in Class2
Road Numbers3-4
Gauge60 cm
Number Built2
BuilderBaldwin
Year1912
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 3.67 / 1.12
Engine Wheelbase (ft / m) 9.50 / 2.90
Ratio of driving wheelbase to overall engine wheelbase 0.39
Overall Wheelbase (engine & tender) (ft / m)22.22 / 6.77
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)17,000 / 7711
Engine Weight (lbs / kg)19,500 / 8845
Tender Loaded Weight (lbs / kg)12,000 / 5443
Total Engine and Tender Weight (lbs / kg)31,500 / 14,288
Tender Water Capacity (gals / ML)500 / 1.89
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 2.50 / 2
Minimum weight of rail (calculated) (lb/yd / kg/m)14 / 7
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)24 / 610
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)8" x 12" / 203x305
Tractive Effort (lbs / kg)4080 / 1850.66
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.17
Heating Ability
Tubes (number - dia) (in / mm)69 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 7.67 / 2.34
Firebox Area (sq ft / m2)28 / 2.60
Grate Area (sq ft / m2) 6.65 / 0.62
Evaporative Heating Surface (sq ft / m2)268 / 24.90
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)268 / 24.90
Evaporative Heating Surface/Cylinder Volume383.88
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation998
Same as above plus superheater percentage998
Same as above but substitute firebox area for grate area4200
Power L13507
Power MT909.60

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