Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 32, p. 42. (Thanks to Ivo Rutishauser for his 10 February 2026 correcting the wheel arrangement.) Works number was 33180 in February 1909.
Small, coal-fired sugar-plantation tank locomotive of the usual type found in the Caribbean and Central America (as well as Hawai'i) in great numbers. In this application, the trailing swing bogie under the bunker could shift 5" (127 mm) to either side.
Upon its completion, "WLA" recorded some desired "Hereafter" changes on the specification page. "Omit smokebox braces, shorten cab handles to old standard" but "Change smoke box door to the new simplified standard".and "Use steam valve stand with smaller head, similar to "Card 2319".
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 2 |
| Locobase ID | 13333 |
| Railroad | Central Puerto Real |
| Country | USA |
| Whyte | 0-4-4T |
| Number in Class | 1 |
| Road Numbers | 2 |
| Gauge | 90 cm |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1909 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 4.42 / 1.35 |
| Engine Wheelbase (ft / m) | 14.58 / 4.44 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.30 |
| Overall Wheelbase (engine & tender) (ft / m) | 14.58 / 4.44 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 23,700 / 10,750 |
| Engine Weight (lbs / kg) | 38,000 / 17,237 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 600 / 2.27 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 20 / 10 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 33 / 838 |
| Boiler Pressure (psi / kPa) | 150 / 1030 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 9" x 16" / 229x406 |
| Tractive Effort (lbs / kg) | 5007 / 2271.14 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.73 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 68 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 7.54 / 2.30 |
| Firebox Area (sq ft / m2) | 26.20 / 2.43 |
| Grate Area (sq ft / m2) | 5 / 0.46 |
| Evaporative Heating Surface (sq ft / m2) | 226 / 21 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 226 / 21 |
| Evaporative Heating Surface/Cylinder Volume | 191.53 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 750 |
| Same as above plus superheater percentage | 750 |
| Same as above but substitute firebox area for grate area | 3930 |
| Power L1 | 2496 |
| Power MT | 464.37 |