Campista 2-4-0 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 4 (Locobase 12306)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 21, p. 284. Works numbers were 14939 in July 1896.

Locobases 12111 and 12114 show three 6-wheelers from 1892 and 1894 with exactly the same dimensions. In addition to the increase in boiler pressure, the instant engine had taller drivers. Thus, the tractive effort remained the same, but the Campistador might have had a higher average speed.

Principal Dimensions by Steve Llanso of Middle Run Media
Class4
Locobase ID12306
RailroadCampista
CountryBrazil
Whyte2-4-0
Number in Class1
Road Numbers4
GaugeMetre
Number Built1
BuilderBurnham, Williams & Co
Year1898
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)6 / 1.83
Engine Wheelbase (ft / m)12.42 / 3.79
Ratio of driving wheelbase to overall engine wheelbase 0.48
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)30,000 / 13,608
Engine Weight (lbs / kg)35,000 / 15,876
Tender Loaded Weight (lbs / kg)15,000 / 6804
Total Engine and Tender Weight (lbs / kg)50,000 / 22,680
Tender Water Capacity (gals / ML)800 / 3.03
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)25 / 12.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 1067
Boiler Pressure (psi / kPa)150 / 1030
High Pressure Cylinders (dia x stroke) (in / mm)11" x 16" / 279x406
Tractive Effort (lbs / kg)5877 / 2665.77
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.10
Heating Ability
Tubes (number - dia) (in / mm)111 - 1.5" / 38
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 6.58 / 2.01
Firebox Area (sq ft / m2)40.30 / 3.74
Grate Area (sq ft / m2) 9.20 / 0.85
Evaporative Heating Surface (sq ft / m2)324 / 30.10
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)324 / 30.10
Evaporative Heating Surface/Cylinder Volume184.10
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1380
Same as above plus superheater percentage1380
Same as above but substitute firebox area for grate area6045
Power L13135
Power MT460.77

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