Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 18, p 98. Works numbers 13051-13052, 13054 in November 1892.
This trio were large examples of six-coupled tank engines used on the Cape Gauge. Indeed, its dimensions suggest that Baldwin took a standard-gauge Mogul and dropped it onto a 42"-gauge frame.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 29 |
| Locobase ID | 12048 |
| Railroad | Costa Rica |
| Country | Costa Rica |
| Whyte | 0-6-4T |
| Number in Class | 3 |
| Road Numbers | 29-31 |
| Gauge | 3'6" |
| Number Built | 3 |
| Builder | Burnham, Williams & Co |
| Year | 1892 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.50 / 2.29 |
| Engine Wheelbase (ft / m) | 19.33 / 5.89 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.39 |
| Overall Wheelbase (engine & tender) (ft / m) | 19.33 / 5.89 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 90,000 / 40,823 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 90,000 / 40,823 |
| Tender Water Capacity (gals / ML) | 1200 / 4.55 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 37.50 / 953 |
| Boiler Pressure (psi / kPa) | 140 / 970 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16.5" x 20" / 419x508 |
| Tractive Effort (lbs / kg) | 17,279 / 7837.63 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 176 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.90 / 3.32 |
| Firebox Area (sq ft / m2) | 86.50 / 8.04 |
| Grate Area (sq ft / m2) | 18.70 / 1.74 |
| Evaporative Heating Surface (sq ft / m2) | 1081 / 100.46 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1081 / 100.46 |
| Evaporative Heating Surface/Cylinder Volume | 218.40 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2618 |
| Same as above plus superheater percentage | 2618 |
| Same as above but substitute firebox area for grate area | 12,110 |
| Power L1 | 2676 |
| Power MT | |