Buenos Aires 4-6-0 Locomotives in Argentina

Class Details by Steve Llanso of Sweat House Media

Class 201-268 (Locobase 3659)

Data provided by Carlos Alberto Fernandez Priotti in Bryan Attewell ([] Steam Locomotive simulator program (April 2000). Note that this is a very small Ten-wheeler.

Fernandez adds (in [] (visited August 2002)) that this class was the major part of the initial stud of locomotives for this metre-gauge line when it was extended north to Rosario. They looked "French", according to Fernandez, although they were built by German firms Borsig, the Societe Alsacienne (SACM), and Richard Hartmann. The design had a Belpaire firebox.

These Ten-wheelers proved to possess "great versatility," says Fernandez (in translation), "[and] served in many cases to the end of steam traction on the FC General Belgrano at the end of the decade of the 1970s."

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID3659
RailroadBuenos Aires (CGBA)
Number in Class68
Road Numbers201-268
Number Built68
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.12 / 3.39
Engine Wheelbase (ft / m)21.31 / 6.50
Ratio of driving wheelbase to overall engine wheelbase 0.52
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)65,856 / 29,872
Engine Weight (lbs / kg)
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)3300 / 12.50
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 6.10 / 6
Minimum weight of rail (calculated) (lb/yd / kg/m)37 / 18.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)51.60 / 1311
Boiler Pressure (psi / kPa)174 / 12
High Pressure Cylinders (dia x stroke) (in / mm)16.5" x 22.2" / 419x564
Tractive Effort (lbs / kg)17,324 / 7858.04
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.80
Heating Ability
Tubes (number - dia) (in / mm)200 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.80 / 3.60
Firebox Area (sq ft / m2)104.84 / 9.74
Grate Area (sq ft / m2)14.40 / 1.34
Evaporative Heating Surface (sq ft / m2)1079 / 100.28
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1079 / 100.28
Evaporative Heating Surface/Cylinder Volume196.39
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2506
Same as above plus superheater percentage2506
Same as above but substitute firebox area for grate area18,242
Power L14367
Power MT438.57

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