Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 29, p. 198. Works number was 28708 in August 1906.
Specs show that this engine was an 0-4-0ST modified according to the 8/16/06 instruction: "Add front truck to reduce weight on driving wheels to 40,000 lbs. or less." Grades had inclines as steep as 1 in 40 (2 1/2%) and relatively generous curve radii "6 chains" (396 feet or less than 3 degrees).
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 1 |
| Locobase ID | 13015 |
| Railroad | Kosaka Copper Mine |
| Country | Japan |
| Whyte | 2-4-0ST |
| Number in Class | 1 |
| Road Numbers | 1 |
| Gauge | 2'6" |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1906 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5 / 1.52 |
| Engine Wheelbase (ft / m) | 11.75 / 3.58 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.43 |
| Overall Wheelbase (engine & tender) (ft / m) | 11.75 / 3.58 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 41,000 / 18,597 |
| Engine Weight (lbs / kg) | 46,000 / 20,865 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 46,000 / 20,865 |
| 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) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 36 / 914 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12" x 18" / 305x457 |
| Tractive Effort (lbs / kg) | 9792 / 4441.58 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.19 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 98 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 8.75 / 2.67 |
| Firebox Area (sq ft / m2) | 42 / 3.90 |
| Grate Area (sq ft / m2) | 8.30 / 0.77 |
| Evaporative Heating Surface (sq ft / m2) | 429 / 39.87 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 429 / 39.87 |
| Evaporative Heating Surface/Cylinder Volume | 182.07 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1328 |
| Same as above plus superheater percentage | 1328 |
| Same as above but substitute firebox area for grate area | 6720 |
| Power L1 | 2604 |
| Power MT | |