Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 66, pp. 359+. Works number was 55130 in November 1921.
One of the first engines on the P a T, this wood-burner was faced with having to consume "wood of inferior quality". Sparks were contained by the Rushton Improved cabbage stack.
The P a T's construction was moved along when the federal government approved funds to support building 164 km (101 miles) of line. Petrolina was located in Pernambuco State west of Recife and Therezina was more than 600 km to the northwest in Piaui State.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 4 |
| Locobase ID | 15180 |
| Railroad | Petrolina a Therezina |
| Country | Brazil |
| Whyte | 4-6-0 |
| Number in Class | 1 |
| Road Numbers | 4 |
| Gauge | Metre |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1921 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 9.50 / 2.90 |
| Engine Wheelbase (ft / m) | 17.67 / 5.39 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.54 |
| Overall Wheelbase (engine & tender) (ft / m) | 39.54 / 12.05 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 45,000 / 20,412 |
| Engine Weight (lbs / kg) | 60,000 / 27,216 |
| Tender Loaded Weight (lbs / kg) | 50,500 / 22,906 |
| Total Engine and Tender Weight (lbs / kg) | 110,500 / 50,122 |
| Tender Water Capacity (gals / ML) | 2500 / 9.47 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 5 / 5 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 25 / 12.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 40 / 1016 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 13" x 18" / 330x457 |
| Tractive Effort (lbs / kg) | 10,343 / 4691.51 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.35 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 125 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9.83 / 3 |
| Firebox Area (sq ft / m2) | 63 / 5.85 |
| Grate Area (sq ft / m2) | 11.16 / 1.04 |
| Evaporative Heating Surface (sq ft / m2) | 619 / 57.51 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 619 / 57.51 |
| Evaporative Heating Surface/Cylinder Volume | 223.85 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1786 |
| Same as above plus superheater percentage | 1786 |
| Same as above but substitute firebox area for grate area | 10,080 |
| Power L1 | 3603 |
| Power MT | 529.55 |