Data provided by Carlos Alberto Fernandez Priotti in Bryan Attewell ([] Steam Locomotive simulator program (April 2000); and John Poole, "Locomotives of the Buenos Aires Railway, 1890-1947", Locomotive Magazine, Volume , . (15 September 1950), p. 133. ( Poole's series began in late 1949 and ran for several years. Locobase downloaded the compiled series in PDF from the Archivo Ferroviario Digital at [], last accessed 30 April 2026.) Works numbers were 3608-3613 in 1898.
Delivered to the FCO over a two-year period (1898-1899) The design featured a Belpaire firebox that spanned 58 3/4" (1,491 mm), "a quite exceptional width", reported Poole ... Specs suggest an under-cylindered locomotive and low-calorie coal. On the other hand, the use of 67" (later 68"/1,727 mm with thicker tires) point to passenger hauls as well.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 5 |
| Locobase ID | 3731 |
| Railroad | FC Oeste de Buenos Aires |
| Country | Argentina |
| Whyte | 2-6-0 |
| Number in Class | 6 |
| Road Numbers | 21-26/195-200 |
| Gauge | 5'6" |
| Number Built | 6 |
| Builder | Dubs & Co |
| Year | 1898 |
| 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) | 32,648 |
| Weight on Drivers (lbs / kg) | 94,752 / 42,979 |
| Engine Weight (lbs / kg) | 113,288 |
| Tender Loaded Weight (lbs / kg) | 86,520 |
| Total Engine and Tender Weight (lbs / kg) | 199,808 |
| Tender Water Capacity (gals / ML) | 2991 / 11.33 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 4.70 / 4.30 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 53 / 26.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 67 / 1702 |
| Boiler Pressure (psi / kPa) | 163.10 / 1110 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17.99" x 24.02" / 457x610 |
| Tractive Effort (lbs / kg) | 16,085 / 7296.04 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.89 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 238 - 1.875" / 48 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.50 / 3.20 |
| Firebox Area (sq ft / m2) | 114 |
| Grate Area (sq ft / m2) | 34.34 / 3.19 |
| Evaporative Heating Surface (sq ft / m2) | 1339 / 124.40 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1339 / 124.40 |
| Evaporative Heating Surface/Cylinder Volume | 189.48 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5601 |
| Same as above plus superheater percentage | 5601 |
| Same as above but substitute firebox area for grate area | 18,593 |
| Power L1 | 4920 |
| Power MT | 343.42 |