Argentine Great Western 2-8-0 Locomotives in Argentina


Class Details by Steve Llanso of Sweat House Media

Class 181 (Locobase 13019)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 29, p. 213. Works numbers were 29370-29374, 29416-29419, 29448, 29572-29573 29612, 29613-29614 in November 1906; 29675-29679 in December.

The British-built AGW (soon to be renamed Buenos Aires & Pacific Railway in 1907) was laid out along generous lines. According to Baldwin's specs, the sharpest curves had 1,090 ft (332 metres - less than 3 1/2 degrees) on the main line and 535 ft (163 metres) on the sidings.

Principal Dimensions by Steve Llanso of Sweat House Media

Class181
Locobase ID13019
RailroadArgentine Great Western (BAP)
CountryArgentina
Whyte2-8-0
Number in Class20
Road Numbers181-280
Gauge5'6"
Number Built20
BuilderBurnham, Williams & Co
Year1906
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)16.75 / 5.11
Engine Wheelbase (ft / m)25 / 7.62
Ratio of driving wheelbase to overall engine wheelbase 0.67
Overall Wheelbase (engine & tender) (ft / m)53.62 / 16.34
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)125,000 / 56,699
Engine Weight (lbs / kg)140,000 / 63,503
Tender Loaded Weight (lbs / kg)100,000 / 45,359
Total Engine and Tender Weight (lbs / kg)240,000 / 108,862
Tender Water Capacity (gals / ML)5000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)52 / 26
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)60 / 1524
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)19" x 26" / 483x660
Tractive Effort (lbs / kg)23,934 / 10856.29
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.22
Heating Ability
Tubes (number - dia) (in / mm)265 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)15.08 / 4.60
Firebox Area (sq ft / m2)139 / 12.92
Grate Area (sq ft / m2)30 / 2.79
Evaporative Heating Surface (sq ft / m2)2213 / 205.67
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)2213 / 205.67
Evaporative Heating Surface/Cylinder Volume259.37
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5400
Same as above plus superheater percentage5400
Same as above but substitute firebox area for grate area25,020
Power L16135
Power MT432.81

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