Data from DeGolyer, Volume 60, pp. 91+. Works numbers were 52817-52819 in January 1920.
These were duplicates of the tanks produced for the French Government and described in Locobase 14583. The only difference was the track of the wheels, which was widened from 600 mm to accommodate the customer's rail gauge.
Locobase has not been able to identify the NWTC. Baldwin's specification included a sketch of the tender graphic, which consisted of a diamond divided into two triangles by a horizontal bar. The upper triangle enclosed the letters A S, the bottom one had only an I.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | I |
| Locobase ID | 14608 |
| Railroad | Northwest Trading Company |
| Country | Japan |
| Whyte | 0-6-0ST |
| Number in Class | 3 |
| Road Numbers | I, II, III |
| Gauge | 2'6" |
| Number Built | 3 |
| Builder | Baldwin |
| Year | 1920 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5.67 / 1.73 |
| Engine Wheelbase (ft / m) | 5.67 / 1.73 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 5.67 / 1.73 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 29,000 / 13,154 |
| Engine Weight (lbs / kg) | 29,000 / 13,154 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 29,000 / 13,154 |
| 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) | 16 / 8 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 26 / 660 |
| Boiler Pressure (psi / kPa) | 165 / 1140 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 9" x 12" / 229x305 |
| Tractive Effort (lbs / kg) | 5243 / 2378.19 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.53 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 83 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 8.25 / 2.51 |
| Firebox Area (sq ft / m2) | 28 / 2.63 |
| Grate Area (sq ft / m2) | 5.70 / 0.53 |
| Evaporative Heating Surface (sq ft / m2) | 295 / 27.41 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 295 / 27.41 |
| Evaporative Heating Surface/Cylinder Volume | 333.87 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 941 |
| Same as above plus superheater percentage | 941 |
| Same as above but substitute firebox area for grate area | 4620 |
| Power L1 | 3520 |
| Power MT | 802.79 |