Caxias 0-4-2 Locomotives in Brazil

Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 20137)

Data from Lionel Wiener, "Locomotives of the Rio Grande do Sul", Locomotive Magazine, Volume 19 (13 January 1913), pp. 16-17. Works number was 440.

This was the only locomotive ordered by the Caxias (an extension of the Porto Alegre and Nuovo Hamburgo) before it was absorbed by the Compagnie Auxiliare in 1909. Wiener reported that this extension ran for 100 miles (160 km) through "a hilly and most picturesque tract of country."

The report explained that the carrying axle under the cab used axle boxes whose sockets received the spherical end of a vertical rod connected on the other end to a leaf spring. The axle boxes themselves had horizontal rods leading forward to pins that pivoted. (The goal, obviously, was to achieve the most flexibility possible.)

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID20137
Number in Class1
Road Numbers
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)
Engine Weight (lbs / kg)41,888 / 19,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)41,888 / 19,000
Tender Water Capacity (gals / ML)634 / 2.40
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)31.50 / 800
Boiler Pressure (psi / kPa)159.50 / 11
High Pressure Cylinders (dia x stroke) (in / mm)11.81" x 15.75" / 300x400
Tractive Effort (lbs / kg)9455 / 4288.72
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 8.53 / 2.60
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2) 7.75 / 0.72
Evaporative Heating Surface (sq ft / m2)
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)
Evaporative Heating Surface/Cylinder Volume
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1236
Same as above plus superheater percentage1236
Same as above but substitute firebox area for grate area
Power L1
Power MT

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