Data provided by Carlos Alberto Fernandez Priotti in Bryan Attewell ([] Steam Locomotive simulator program (April 2000) and from Baldwin Locomotive Works Specification for Engines, as digitized by the DeGolyer Library of Southern Methodist University, Volume 20, p. 128. Works numbers were 14855-14856 in May 1896.
Baldwin produced pairs of locomotives with three different wheel arrangements in a single run for the Buenos Aires Western. Each has a different entry: Locobase 3729 for the 4-4-0s (this entry), Locobase 12202 for the compound 2-6-0s, and Locobase 12195 for the 0-6-2 tanks.
Taking advantage of the broad gauge, the pair of American-type Eight-wheelers used a deep Belpaire firebox that spanned 50" (1,270 mm).
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Clase 10 |
| Locobase ID | 3729 |
| Railroad | Buenos Aires Western |
| Country | Argentina |
| Whyte | 4-4-0 |
| Number in Class | 2 |
| Road Numbers | 10-11 |
| Gauge | 5'6" |
| Number Built | 2 |
| Builder | Burnham, Williams & Co |
| Year | 1896 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 8.58 / 2.62 |
| Engine Wheelbase (ft / m) | 21.75 / 6.63 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.39 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 65,072 / 29,516 |
| Engine Weight (lbs / kg) | |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2497 / 9.46 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3 / 2.70 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 54 / 27 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 73.50 / 1867 |
| Boiler Pressure (psi / kPa) | 162.40 / 1110 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 24" / 457x610 |
| Tractive Effort (lbs / kg) | 14,604 / 6624.27 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.46 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 244 - 1.875" / 48 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.50 / 3.20 |
| Firebox Area (sq ft / m2) | 82.40 / 7.66 |
| Grate Area (sq ft / m2) | 21.50 / 2 |
| Evaporative Heating Surface (sq ft / m2) | 1340 / 124.49 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1340 / 124.49 |
| Evaporative Heating Surface/Cylinder Volume | 189.57 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3492 |
| Same as above plus superheater percentage | 3492 |
| Same as above but substitute firebox area for grate area | 13,382 |
| Power L1 | 4931 |
| Power MT | 334.12 |