Buenos Aires 4-4-0 Locomotives in Argentina

Class Details by Steve Llanso of Sweat House Media

Class 51-55 (Locobase 3660)

Data provided by Carlos Alberto Fern+ndez Priotti in Bryan Attewell ([] Steam Locomotive simulator program (April 2000).

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID3660
RailroadBuenos Aires (CGBA)
Number in Class5
Road Numbers51-55
Number Built5
Valve Gear
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)47,712 / 21,642
Engine Weight (lbs / kg)
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)1980 / 7.50
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.40 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)40 / 20
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)59.40 / 1509
Boiler Pressure (psi / kPa)174 / 12
High Pressure Cylinders (dia x stroke) (in / mm)15" x 21.6" / 381x549
Tractive Effort (lbs / kg)12,101 / 5488.93
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.94
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.20 / 3.11
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)10.20 / 0.95
Evaporative Heating Surface (sq ft / m2)760 / 70.63
Superheating Surface (sq ft / m2)169 / 15.71
Combined Heating Surface (sq ft / m2)929 / 86.34
Evaporative Heating Surface/Cylinder Volume172.03
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1775
Same as above plus superheater percentage2094
Same as above but substitute firebox area for grate area
Power L1
Power MT

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