FC Rosario a Puerto Belgrano 4-4-0 Locomotives in Argentina


Class Details by Steve Llanso of Sweat House Media

Class 21 (Locobase 3738)

Data provided by Carlos Alberto Fernandez Priotti in Bryan Attewell ([link] Steam Locomotive simulator program (April 2000). See also the builder's photo "Rosario Railway, Argentine" on Flickr's "Historical Railway Images" photostream at [link], last accessed 27 April 2024. Works numbers 4117-4129 in 1908.

Fernandez says these engines were based on the Outrances that ran on the Nord in France.Their place in Argentine rail history is secured by the fact that they introduced the use of the Schmidt superheater.

Principal Dimensions by Steve Llanso of Middle Run Media
Class21
Locobase ID3738
RailroadFC Rosario a Puerto Belgrano (FCRPB)
CountryArgentina
Whyte4-4-0
Number in Class12
Road Numbers21-32
Gauge5'6"
Number Built12
BuilderSchwartzkopff
Year1908
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.86 / 2.70
Engine Wheelbase (ft / m)23.95 / 7.30
Ratio of driving wheelbase to overall engine wheelbase 0.37
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)70,548 / 32,000
Engine Weight (lbs / kg)109,790 / 49,800
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)4401 / 16.67
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 6.60 / 6
Minimum weight of rail (calculated) (lb/yd / kg/m)59 / 29.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)72.80 / 1850
Boiler Pressure (psi / kPa)169.70 / 1170
High Pressure Cylinders (dia x stroke) (in / mm)19.69" x 25.59" / 500x650
Tractive Effort (lbs / kg)19,658 / 8916.73
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.59
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)13.09 / 3.99
Firebox Area (sq ft / m2)128.85 / 11.97
Grate Area (sq ft / m2)24.22 / 2.25
Evaporative Heating Surface (sq ft / m2)1217 / 113.03
Superheating Surface (sq ft / m2)371 / 34.47
Combined Heating Surface (sq ft / m2)1588 / 147.50
Evaporative Heating Surface/Cylinder Volume134.94
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4110
Same as above plus superheater percentage5055
Same as above but substitute firebox area for grate area26,895
Power L111,873
Power MT742.06

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