Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 36, p.236. Works numbers were 33583 in September 1909 and 35632 in December 1910.
Ernst Wiener's string of orders for small plantation tanks continued with this pair delivered a year apart. They were required to bend around 75-foot (22.9-metre) curve radii and rattle along 20-lb/yard (10-kg/metre) rail.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 4 |
| Locobase ID | 13764 |
| Railroad | Central Vicente/Central San Vicente |
| Country | USA |
| Whyte | 0-4-4T |
| Number in Class | 2 |
| Road Numbers | 4-5 |
| Gauge | 76 cm |
| Number Built | 2 |
| Builder | Baldwin |
| Year | 1909 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 4 / 1.22 |
| Engine Wheelbase (ft / m) | 14 / 4.27 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.29 |
| Overall Wheelbase (engine & tender) (ft / m) | 14 / 4.27 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 20,000 / 9072 |
| Engine Weight (lbs / kg) | 32,000 / 14,515 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 550 / 2.08 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 17 / 8.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 29 / 737 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 8" x 14" / 203x356 |
| Tractive Effort (lbs / kg) | 4202 / 1906.00 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.76 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 64 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 6.67 / 2.03 |
| Firebox Area (sq ft / m2) | 25.90 / 2.41 |
| Grate Area (sq ft / m2) | 4.60 / 0.43 |
| Evaporative Heating Surface (sq ft / m2) | 192 / 17.84 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 192 / 17.84 |
| Evaporative Heating Surface/Cylinder Volume | 237.04 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 736 |
| Same as above plus superheater percentage | 736 |
| Same as above but substitute firebox area for grate area | 4144 |
| Power L1 | 3069 |
| Power MT | 676.60 |