Data from DeGolyer, Volume 60, pp. 154. Works number was 46896 in November 1917.
This skinny-gauge mining locomotive's specification included a frequent advisement to make "all springs to be one plate heavier than usual". Other information concerned the service the engine was to perform: "Locomotive to haul a train of 12 ore cars, the total weight of car and ore to be 3 tons each, a distance of three miles (4.8 km), the run to be made in about 15 minutes." Maximum grade on this lines was about 2%.
(Marshall valve gear was an adaptation of Walschaert's gear for very small locomotives.)
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 14625 |
| Railroad | Hunan Mining Bureau |
| Country | China |
| Whyte | 0-4-0WT |
| Number in Class | 1 |
| Road Numbers | |
| Gauge | 60 cm |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1917 |
| Valve Gear | Marshall |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 4 / 1.22 |
| Engine Wheelbase (ft / m) | 4 / 1.22 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 4 / 1.22 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 18,200 / 8255 |
| Engine Weight (lbs / kg) | 18,200 / 8255 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 18,200 / 8255 |
| Tender Water Capacity (gals / ML) | 175 / 0.66 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 15 / 7.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 23 / 584 |
| Boiler Pressure (psi / kPa) | 170 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 8" x 12" / 203x305 |
| Tractive Effort (lbs / kg) | 4825 / 2188.59 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.77 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 56 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 7 / 2.13 |
| Firebox Area (sq ft / m2) | 21.10 / 1.96 |
| Grate Area (sq ft / m2) | 4.90 / 0.46 |
| Evaporative Heating Surface (sq ft / m2) | 198 / 18.39 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 198 / 18.39 |
| Evaporative Heating Surface/Cylinder Volume | 283.61 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 833 |
| Same as above plus superheater percentage | 833 |
| Same as above but substitute firebox area for grate area | 3587 |
| Power L1 | 2833 |
| Power MT | 686.34 |