Data from DeGolyer, Volume 10, p 274. See also Baldwin Locomotive Works, Locomotives Built for the Central of Brazil, Record of Recent Construction Number 64 (Philadelphia: Burnham, Williams & Company, 1908) p 13. Works numbers were 5721-5722, 5724, and 5728 (road numbers 2, 1, 4, 3, respectively) in July 1881.
Baldwin's Record of Recent Construction summary of Dom Pedro Segundo orders notes that this quartet was joined in 1883 by three more Ameican-type locomotives (works numbers 6788, 6792, and 6797) with slightly smaller cylinder diameters. One of the seven engines came with a steel firebox; the others used copper fireboxes topped by a steel crown.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 1 |
| Locobase ID | 9679 |
| Railroad | Dom Pedro Segundo |
| Country | Brazil |
| Whyte | 4-4-0 |
| Number in Class | 4 |
| Road Numbers | 1-4/150-153 |
| Gauge | 5'3" |
| Number Built | 4 |
| Builder | Burnham, Parry, Williams & Co |
| Year | 1881 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 15 / 4.57 |
| Engine Wheelbase (ft / m) | 22.67 / 6.91 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.66 |
| Overall Wheelbase (engine & tender) (ft / m) | 44.25 / 13.49 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 68,000 / 30,844 |
| Engine Weight (lbs / kg) | 80,000 / 36,287 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2000 / 7.58 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 57 / 28.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 62 / 1372 |
| Boiler Pressure (psi / kPa) | 130 / 900 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17.5" x 24" / 457x610 |
| Tractive Effort (lbs / kg) | 13,100 / 5942.07 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.19 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 180 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.61 / 3.54 |
| Firebox Area (sq ft / m2) | 103 / 9.57 |
| Grate Area (sq ft / m2) | 16 / 1.49 |
| Evaporative Heating Surface (sq ft / m2) | 1197 / 111.21 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1197 / 111.21 |
| Evaporative Heating Surface/Cylinder Volume | 179.16 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2080 |
| Same as above plus superheater percentage | 2080 |
| Same as above but substitute firebox area for grate area | 13,390 |
| Power L1 | 3442 |
| Power MT | 223.19 |