Data from Baldwin Locomotive Works Specification for Engines, as digitized by the DeGolyer Library of Southern Methodist University, Volume 31, p. 93. Works numbers were 32227-32229 in November 1907.
Having been found to be useful on sugar plantation, this design appealed to Frazar & Company for the Japanese government's forestry service.
Data from Baldwin Locomotive Works Specification for Engines, as digitized by the DeGolyer Library of Southern Methodist University, Volume 60, p. 63, 65. See also William Viekman, "The Baldwins of Upper Pine," Trains (October 1959), pp. 26. Works numbers were 54418-54419, 54511-54512 in January 1921 and 55128-55129 in November.
Locomotive broker Frazar & Company frequently ordered such locomotives for a variety of Japanese industrial and forest-management companies. This sextet was fitted with Rushton Improved stacks as they were expected to burn either wood or coal.
| Principal Dimensions by Steve Llanso of Middle Run Media | ||
|---|---|---|
| Class | 1 | 1 |
| Locobase ID | 13226 | 14411 |
| Railroad | Imperial Forestry Bureau | Imperial Forestry Bureau |
| Country | Japan | Japan |
| Whyte | 0-4-2T | 0-4-2T |
| Number in Class | 3 | 6 |
| Road Numbers | 1-3 | 1-6 |
| Gauge | 2'6" | 2'6" |
| Number Built | 3 | 6 |
| Builder | Burnham, Parry, Williams & Co | Baldwin |
| Year | 1907 | 1921 |
| Valve Gear | Stephenson | Stephenson |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | 3.75 / 1.14 | 3.75 / 1.14 |
| Engine Wheelbase (ft / m) | 9.58 / 2.92 | 9.58 / 2.92 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.39 | 0.39 |
| Overall Wheelbase (engine & tender) (ft / m) | 9.58 / 2.92 | 9.58 / 2.92 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
| Weight on Drivers (lbs / kg) | 15,000 / 6804 | 15,900 / 7212 |
| Engine Weight (lbs / kg) | 22,000 / 9979 | 22,800 / 10,342 |
| Tender Loaded Weight (lbs / kg) | ||
| Total Engine and Tender Weight (lbs / kg) | ||
| Tender Water Capacity (gals / ML) | 500 / 1.89 | 300 / 1.14 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | ||
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 13 / 6.50 | 13 / 6.50 |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 28 / 711 | 28 / 711 |
| Boiler Pressure (psi / kPa) | 150 / 1030 | 150 / 1030 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 8.5" x 12" / 216x330 | 8.5" x 12" / 216x330 |
| Tractive Effort (lbs / kg) | 3948 / 1790.78 | 3948 / 1790.78 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.80 | 4.03 |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | 57 - 1.5" / 38 | 57 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | ||
| Flue/Tube length (ft / m) | 6.66 / 2.03 | 6.66 / 2.03 |
| Firebox Area (sq ft / m2) | 23 / 2.14 | 23 / 2.14 |
| Grate Area (sq ft / m2) | 6.25 / 0.58 | 6.20 / 0.58 |
| Evaporative Heating Surface (sq ft / m2) | 170 / 15.79 | 170 / 15.79 |
| Superheating Surface (sq ft / m2) | ||
| Combined Heating Surface (sq ft / m2) | 170 / 15.79 | 170 / 15.79 |
| Evaporative Heating Surface/Cylinder Volume | 215.70 | 215.70 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 938 | 930 |
| Same as above plus superheater percentage | 938 | 930 |
| Same as above but substitute firebox area for grate area | 3450 | 3450 |
| Power L1 | 2531 | 2531 |
| Power MT | 743.99 | 701.87 |