Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 20, 127. Works numbers were 18487-18488 in December 1900.
Both of these Moguls went to Costa Rica's Northern Railway in 1905 and were renumbered.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 52 |
| Locobase ID | 12219 |
| Railroad | Costa Rica Railway |
| Country | Costa Rica |
| Whyte | 2-6-0 |
| Number in Class | 2 |
| Road Numbers | 52-53 / 26-27 / 28-29 |
| Gauge | 3'6" |
| Number Built | 2 |
| Builder | Burnham, Williams & Co |
| Year | 1900 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10.17 / 3.10 |
| Engine Wheelbase (ft / m) | 17.17 / 5.23 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.59 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 68,000 / 30,844 |
| Engine Weight (lbs / kg) | 77,000 / 34,927 |
| Tender Loaded Weight (lbs / kg) | 40,000 / 18,144 |
| Total Engine and Tender Weight (lbs / kg) | 117,000 / 53,071 |
| Tender Water Capacity (gals / ML) | 1600 / 6.06 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 38 / 19 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 40.50 / 1029 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 20" / 406x508 |
| Tractive Effort (lbs / kg) | 17,193 / 7798.62 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.96 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 184 - 1.875" / 48 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9.17 / 2.80 |
| Firebox Area (sq ft / m2) | 99 / 9.20 |
| Grate Area (sq ft / m2) | 16.40 / 1.52 |
| Evaporative Heating Surface (sq ft / m2) | 918 / 85.32 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 918 / 85.32 |
| Evaporative Heating Surface/Cylinder Volume | 197.24 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2624 |
| Same as above plus superheater percentage | 2624 |
| Same as above but substitute firebox area for grate area | 15,840 |
| Power L1 | 3279 |
| Power MT | 318.92 |