Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 20, 259. Works numbers were 15226-15227 in March 1897.
These Ten-wheelers bore the names Diriamba and La 96 (most likely known as "La Noventa Seis"). They later operated on the Pacifico (or the Pacifico took over the Pueblos) as 14-15 with La 96 being renamed Apoya.
Both served into the 1950s. Although the Diriamba was reported to be derelict in 1955, it was later considered for rebuilding.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Diriamba |
| Locobase ID | 12232 |
| Railroad | Pueblos |
| Country | Nicaragua |
| Whyte | 4-6-0 |
| Number in Class | 6 |
| Road Numbers | 105-110 |
| Gauge | 3'6" |
| Number Built | 6 |
| Builder | Burnham, Williams & Co |
| Year | 1900 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 11 / 3.35 |
| Engine Wheelbase (ft / m) | 20.42 / 6.22 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.54 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 74,000 / 33,566 |
| Engine Weight (lbs / kg) | 91,000 / 41,277 |
| Tender Loaded Weight (lbs / kg) | 56,000 / 25,401 |
| Total Engine and Tender Weight (lbs / kg) | 147,000 / 66,678 |
| Tender Water Capacity (gals / ML) | 2800 / 10.61 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 41 / 20.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 50 / 1270 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 22" / 432x559 |
| Tractive Effort (lbs / kg) | 19,455 / 8824.65 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.80 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 184 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 12 / 3.66 |
| Firebox Area (sq ft / m2) | 106.50 / 9.90 |
| Grate Area (sq ft / m2) | 18 / 1.67 |
| Evaporative Heating Surface (sq ft / m2) | 1255 / 116.64 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1255 / 116.64 |
| Evaporative Heating Surface/Cylinder Volume | 217.14 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3240 |
| Same as above plus superheater percentage | 3240 |
| Same as above but substitute firebox area for grate area | 19,170 |
| Power L1 | 4639 |
| Power MT | 414.62 |