Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 20, p.18. (Thanks to Teemu Koivumaki for his 24 October 2021 email correcting the works numbers.) Works numbers were 14403-14404 in August 1895.
These were very similar to the Central of Brazil delivered by Baldwin in the same year (Locobase 12186). On the Pernambuco, their fuel was described as "coal, sometimes wood." Maximum grade rose at 1.8% and curve radii were as tight as 150 metres.
Principal Dimensions by Steve Llanso of Sweat House Media | |
|---|---|
| Class | 20 |
| Locobase ID | 12158 |
| Railroad | Central Pernambuco |
| Country | Brazil |
| Whyte | 4-6-0 |
| Number in Class | 4 |
| Road Numbers | 20-21, 27-28 |
| Gauge | Metre |
| Number Built | 4 |
| Builder | Burnham, Williams & Co |
| Year | 1895 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 12.50 / 3.81 |
| Engine Wheelbase (ft / m) | 21.83 / 6.65 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.57 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 52,000 / 23,587 |
| Engine Weight (lbs / kg) | 68,000 / 30,844 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2500 / 9.47 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 29 / 14.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 46 / 1168 |
| Boiler Pressure (psi / kPa) | 180 / 12.40 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 20" / 406x508 |
| Tractive Effort (lbs / kg) | 17,030 / 7724.69 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.05 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 132 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.79 / 3.59 |
| Firebox Area (sq ft / m2) | 83.07 / 7.71 |
| Grate Area (sq ft / m2) | 15.20 / 1.41 |
| Evaporative Heating Surface (sq ft / m2) | 892 / 82.90 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 892 / 82.90 |
| Evaporative Heating Surface/Cylinder Volume | 191.65 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2736 |
| Same as above plus superheater percentage | 2736 |
| Same as above but substitute firebox area for grate area | 14,953 |
| Power L1 | 3876 |
| Power MT | 492.99 |