Data from DeGolyer, Vol 60, pp. 281. See also Julean Arnold, Commercial Handbook of China, Volume I, Miscellaneous Series-No 84 (Washington, DC: Government Printing Office, 1919). Works numbers were 46200-46201 in August 1917 and 51307-51312, 51340, 51369-51375 in February 1919.
The first two of this class of Mikados were delivered in 1917 with tenders holding 4,200 US gallons of water and 5 1/2 short tons of coal; they weighed 80,000 lb (36,287 kg) loaded.
By the time this class was delivered, the PMR operated 600 route miles. Its 522-mile (840 km) main line was completed in 1903 and connected the Imperial City with Mukden in the northeast, where it linked to the South Manchuria Railway. Along the way, the PMR passed through Tientsin and the Kaping coal field.
Largely funded by British interests and described as the oldest railway in China, the PMR's management in 1918 was overseen by a Chinese managing director. At that time, the railway was known in Chinese as the Ching-Feng
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 200 |
| Locobase ID | 14645 |
| Railroad | Peking-Mukden |
| Country | China |
| Whyte | 2-8-2 |
| Number in Class | 16 |
| Road Numbers | 200-215 |
| Gauge | Std |
| Number Built | 16 |
| Builder | Baldwin |
| Year | 1917 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 15 / 4.57 |
| Engine Wheelbase (ft / m) | 31.33 / 9.55 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.48 |
| Overall Wheelbase (engine & tender) (ft / m) | 53.50 / 16.31 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 35,840 / 16,257 |
| Weight on Drivers (lbs / kg) | 142,000 / 64,410 |
| Engine Weight (lbs / kg) | 188,000 / 85,275 |
| Tender Loaded Weight (lbs / kg) | 80,000 / 36,287 |
| Total Engine and Tender Weight (lbs / kg) | 268,000 / 121,562 |
| Tender Water Capacity (gals / ML) | 6000 / 22.73 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 9.50 / 9 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 59 / 29.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 54 / 1372 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 21" x 28" / 533x711 |
| Tractive Effort (lbs / kg) | 34,986 / 15869.40 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.06 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 172 - 2" / 51 |
| Flues (number - dia) (in / mm) | 24 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 18 / 5.49 |
| Firebox Area (sq ft / m2) | 146 / 13.56 |
| Grate Area (sq ft / m2) | 41.40 / 3.85 |
| Evaporative Heating Surface (sq ft / m2) | 2365 / 219.71 |
| Superheating Surface (sq ft / m2) | 508 / 47.19 |
| Combined Heating Surface (sq ft / m2) | 2873 / 266.90 |
| Evaporative Heating Surface/Cylinder Volume | 210.70 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 7452 |
| Same as above plus superheater percentage | 8793 |
| Same as above but substitute firebox area for grate area | 31,010 |
| Power L1 | 11,065 |
| Power MT | 687.16 |