Data from DeGolyer, Volume 49, p. 101. See also Allen Morrison's The Tramways of Yucatan on the web at [], last accessed 2 February 2024. Works number was 38473 in October 1912.
The Empresa Zaldivar was a 61-km (37.9-mile) agricultural tramway operating in the Yucatan. It had its headquarters in Merida.
This was among the smallest plantation engines Baldwin built. Fuel capacity amounted to 1/2 cord of wood.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Elda |
| Locobase ID | 14187 |
| Railroad | Empresa Zaldivar |
| Country | Mexico |
| Whyte | 2-4-0 |
| Number in Class | 1 |
| Road Numbers | 2 |
| Gauge | 60 cm |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1912 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 3.67 / 1.12 |
| Engine Wheelbase (ft / m) | 9.25 / 2.82 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.40 |
| Overall Wheelbase (engine & tender) (ft / m) | 22.37 / 6.82 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 12,600 / 5715 |
| Engine Weight (lbs / kg) | 15,600 / 7076 |
| Tender Loaded Weight (lbs / kg) | 14,000 / 6350 |
| Total Engine and Tender Weight (lbs / kg) | 29,600 / 13,426 |
| Tender Water Capacity (gals / ML) | 500 / 1.89 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 11 / 5.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 28 / 711 |
| Boiler Pressure (psi / kPa) | 150 / 1030 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 7" x 12" / 178x305 |
| Tractive Effort (lbs / kg) | 2678 / 1214.72 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.71 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 46 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 7.50 / 2.29 |
| Firebox Area (sq ft / m2) | 21 / 1.95 |
| Grate Area (sq ft / m2) | 4.50 / 0.42 |
| Evaporative Heating Surface (sq ft / m2) | 155 / 14.40 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 155 / 14.40 |
| Evaporative Heating Surface/Cylinder Volume | 292.45 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 675 |
| Same as above plus superheater percentage | 675 |
| Same as above but substitute firebox area for grate area | 3150 |
| Power L1 | 3434 |
| Power MT | 1201.69 |