Data from DeGolyer, Vol 63, pp. 257. Works numbers were 53957-53958 in November 1920.
These small, oil-fired plantation Consolidations augmented the power available to Puerto Rican sugar processor that operated them. Their use of piston valves (8"/203 mm) in diameter) to supply saturated steam was unusual, but their 40 lb/yard (20 kg/metre) rail weight was not. Maximum grades were held to a modest 1.04% and maximum curves amounted to 16 degrees.
The 8 would later work for the American Railroad of Puerto Rico as their 20.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 7 |
| Locobase ID | 14760 |
| Railroad | Guanica Centrale |
| Country | USA-Puerto Rico |
| Whyte | 2-8-0 |
| Number in Class | 2 |
| Road Numbers | 7-8 |
| Gauge | Metre |
| Number Built | 2 |
| Builder | Baldwin |
| Year | 1920 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10.75 / 3.28 |
| Engine Wheelbase (ft / m) | 17.17 / 5.23 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.63 |
| Overall Wheelbase (engine & tender) (ft / m) | 46.31 / 14.12 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 81,000 / 36,741 |
| Engine Weight (lbs / kg) | 87,500 / 39,689 |
| Tender Loaded Weight (lbs / kg) | 66,500 / 30,164 |
| Total Engine and Tender Weight (lbs / kg) | 154,000 / 69,853 |
| Tender Water Capacity (gals / ML) | 3000 / 11.36 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1500 / 5678 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 34 / 17 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 38 / 965 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 20" / 406x508 |
| Tractive Effort (lbs / kg) | 18,324 / 8311.64 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.42 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 212 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9.83 / 3 |
| Firebox Area (sq ft / m2) | 95 / 8.83 |
| Grate Area (sq ft / m2) | 14.80 / 1.38 |
| Evaporative Heating Surface (sq ft / m2) | 1042 / 96.84 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1042 / 96.84 |
| Evaporative Heating Surface/Cylinder Volume | 224.09 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2368 |
| Same as above plus superheater percentage | 2368 |
| Same as above but substitute firebox area for grate area | 15,200 |
| Power L1 | 3306 |
| Power MT | 359.92 |