Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 20, p. 29. (Thanks to Teemu Koivumaki for his 22 March 2021 email correcting the works numbers.) Works numbers were 14442 in September 1895 and 14752 in March 1896.
This pair of locomotives was delivered to two different customers in Bahia, Brazil. One was Antonio de Lacerda, who sold the engine to Usina Terra Nova as the Aymore.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 4 |
| Locobase ID | 12166 |
| Railroad | Companhia Agricola, Usinas & Terras |
| Country | Brazil |
| Whyte | 2-4-2ST |
| Number in Class | 2 |
| Road Numbers | 4-5 |
| Gauge | Metre |
| Number Built | 2 |
| Builder | Burnham, Williams & Co |
| Year | 1895 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 4 / 1.22 |
| Engine Wheelbase (ft / m) | 15 / 4.57 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.27 |
| Overall Wheelbase (engine & tender) (ft / m) | 15 / 4.57 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 19,000 / 8618 |
| Engine Weight (lbs / kg) | 30,000 / 13,608 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 30,000 / 13,608 |
| Tender Water Capacity (gals / ML) | 400 / 1.52 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 16 / 8 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 37 / 940 |
| Boiler Pressure (psi / kPa) | 140 / 970 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 9" x 14" / 229x356 |
| Tractive Effort (lbs / kg) | 3647 / 1654.25 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.21 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 55 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 6.92 / 2.11 |
| Firebox Area (sq ft / m2) | 33 / 3.07 |
| Grate Area (sq ft / m2) | 6.10 / 0.57 |
| Evaporative Heating Surface (sq ft / m2) | 206 / 19.14 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 206 / 19.14 |
| Evaporative Heating Surface/Cylinder Volume | 199.84 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 854 |
| Same as above plus superheater percentage | 854 |
| Same as above but substitute firebox area for grate area | 4620 |
| Power L1 | 3107 |
| Power MT | 721.03 |