Data from DeGolyer, Volume 60, pp. 95+. Works numbers were 54834, 54836 in May 1921.
Locobase 14611 shows the Iga Railway #4, which presented identical specifications for this small Prairie tank.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 1 |
| Locobase ID | 14610 |
| Railroad | Hokkaido Kogyo |
| Country | Japan |
| Whyte | 2-6-2T |
| Number in Class | 2 |
| Road Numbers | 1-2 |
| Gauge | 3'6" |
| Number Built | 2 |
| Builder | Baldwin |
| Year | 1921 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.50 / 2.29 |
| Engine Wheelbase (ft / m) | 19.75 / 6.02 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.38 |
| Overall Wheelbase (engine & tender) (ft / m) | 19.75 / 6.02 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 44,500 / 20,185 |
| Engine Weight (lbs / kg) | 63,200 / 28,667 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1200 / 4.55 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.50 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 25 / 12.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 38 / 965 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12" x 18" / 305x457 |
| Tractive Effort (lbs / kg) | 9277 / 4207.98 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.80 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 80 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9 / 2.74 |
| Firebox Area (sq ft / m2) | 41 / 3.81 |
| Grate Area (sq ft / m2) | 9.27 / 0.86 |
| Evaporative Heating Surface (sq ft / m2) | 368 / 34.19 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 368 / 34.19 |
| Evaporative Heating Surface/Cylinder Volume | 156.18 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1483 |
| Same as above plus superheater percentage | 1483 |
| Same as above but substitute firebox area for grate area | 6560 |
| Power L1 | 2464 |
| Power MT | 366.21 |