Data from DeGolyer, Vol 72, pp. 243+. Works number was 57789 in June 1924..
This oil-burning Mogul performed switching and light freight service at Hawaii's Fort Weaver. Its narrow-gauge road used 60 lb/yard (30 kg/metre) rail laid on crossties spaced 2 feet (610 mm) apart. Maximum grades reached 3% and the tightest curves were measured at 17 degrees (radius of 338 feet/103 metres). The specs also mention 1.67% grades combined with 12 degree (478 feet/146 metres).
The engine's tender had a sloped back for better visibility when backing up.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 15280 |
| Railroad | United States Government-Army Engineers |
| Country | USA |
| Whyte | 2-6-0 |
| Number in Class | 1 |
| Road Numbers | |
| Gauge | 3' |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1924 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 8 / 2.44 |
| Engine Wheelbase (ft / m) | 16.33 / 4.98 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.49 |
| Overall Wheelbase (engine & tender) (ft / m) | 44.98 / 13.71 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 70,800 / 32,114 |
| Engine Weight (lbs / kg) | 80,000 / 36,287 |
| Tender Loaded Weight (lbs / kg) | 60,000 / 27,216 |
| Total Engine and Tender Weight (lbs / kg) | 140,000 / 63,503 |
| Tender Water Capacity (gals / ML) | 2500 / 9.47 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1500 / 5678 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 39 / 19.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 43 / 1092 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 20" / 406x508 |
| Tractive Effort (lbs / kg) | 18,218 / 8263.56 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.89 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 142 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 14 / 4.27 |
| Firebox Area (sq ft / m2) | 69 / 6.41 |
| Grate Area (sq ft / m2) | 16.90 / 1.57 |
| Evaporative Heating Surface (sq ft / m2) | 1104 / 102.60 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1104 / 102.60 |
| Evaporative Heating Surface/Cylinder Volume | 237.42 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3042 |
| Same as above plus superheater percentage | 3042 |
| Same as above but substitute firebox area for grate area | 12,420 |
| Power L1 | 4020 |
| Power MT | 375.53 |