Ingenio Mercedes 0-4-2 Locomotives in Argentina

Class Details by Steve Llanso of Sweat House Media

Class Isaias Padilla (Locobase 15193)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 66, p 432. See also an unusual view of Tucuman, The Garden of the Argentine Republic, in "Christina's" blog "The Thinking Stomach, "Argentina: Tucuman" entry dated 15 August 2010 at [] . Works numbers were 54141-54142 in November 1920.

Located in Tucuman Province about 675 miles (1,085 km) northwest of Buenos Aires, the IM bought this wood-burning tank based on a design in widespread use. It was fitted with the Rushton Improved cabbage stack to swallow sparks. The second engine was named Jose Padilla.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassIsaias Padilla
Locobase ID15193
RailroadIngenio Mercedes
Number in Class4
Road Numbers
Number Built4
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 4.50 / 1.37
Engine Wheelbase (ft / m)11 / 3.35
Ratio of driving wheelbase to overall engine wheelbase 0.41
Overall Wheelbase (engine & tender) (ft / m)11 / 3.35
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)35,200 / 15,966
Engine Weight (lbs / kg)40,200 / 18,234
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)40,200 / 18,234
Tender Water Capacity (gals / ML)500 / 1.89
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)29 / 14.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 838
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)10" x 16" / 254x406
Tractive Effort (lbs / kg)6594 / 2990.99
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.34
Heating Ability
Tubes (number - dia) (in / mm)83 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 7.67 / 2.34
Firebox Area (sq ft / m2)35 / 3.25
Grate Area (sq ft / m2)7 / 0.65
Evaporative Heating Surface (sq ft / m2)323 / 30.01
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)323 / 30.01
Evaporative Heating Surface/Cylinder Volume222.08
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1120
Same as above plus superheater percentage1120
Same as above but substitute firebox area for grate area5600
Power L13013
Power MT377.42

All material Copyright ©
Wes Barris