Data from DeGolyer, Volume 60, pp. 276. Julean Arnold, Commercial Handbook of China, Volume I, Miscellaneous Series-No 84 (Washington, DC: Government Printing Office, 1919). Works numbers were 41418-41419 in May 1914.
Prairie tanks used for switching.
Data from "The Government Railways of North China, the Pekin-Mukden Ry", Locomotive Magazine, Volume XXII [22] (15 August 1916), p. 165.
LM reported that Dubs & Company produced the first three of this "useful" saddle-tank design in 1887. Twenty years later, after Dubs had been amalgamated with Sharp, Stewart and Neilson & Company as the North British Locomotive Company, NBLC delivered another six members in 1907. Meanwhile, the PM's own shops turned out the last three of the class
| Principal Dimensions by Steve Llanso of Middle Run Media | ||
|---|---|---|
| Class | 30 | 5 |
| Locobase ID | 14646 | 20557 |
| Railroad | Peking-Mukden | Peking-Mukden |
| Country | China | China |
| Whyte | 2-6-2T | 2-6-2ST |
| Number in Class | 2 | 12 |
| Road Numbers | 30-31 | 5-7, 1-4, 8-9, 10, 17, 20 |
| Gauge | Std | Std |
| Number Built | 2 | 12 |
| Builder | Baldwin | Several |
| Year | 1914 | 1887 |
| Valve Gear | Stephenson | Stephenson |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | 11.33 / 3.45 | 10 / 3.05 |
| Engine Wheelbase (ft / m) | 26 / 7.92 | 23.17 / 7.06 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.44 | 0.43 |
| Overall Wheelbase (engine & tender) (ft / m) | 26 / 7.92 | 23.17 / 7.06 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
| Weight on Drivers (lbs / kg) | 90,000 / 40,823 | |
| Engine Weight (lbs / kg) | 120,000 / 54,431 | 82,880 / 37,594 |
| Tender Loaded Weight (lbs / kg) | ||
| Total Engine and Tender Weight (lbs / kg) | 120,000 / 54,431 | 82,880 / 37,594 |
| Tender Water Capacity (gals / ML) | 1700 / 6.44 | 720 / 2.73 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.10 / 1 | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 50 / 25 | |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 54 / 1372 | 42 / 1067 |
| Boiler Pressure (psi / kPa) | 180 / 1240 | 150 / 1030 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 24" / 432x610 | 14" x 20" / 356x508 |
| Tractive Effort (lbs / kg) | 19,652 / 8914.01 | 11,900 / 5397.76 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.58 | |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | 220 - 2" / 51 | |
| Flues (number - dia) (in / mm) | ||
| Flue/Tube length (ft / m) | 10.50 / 3.20 | |
| Firebox Area (sq ft / m2) | 106 / 9.85 | 66 / 6.13 |
| Grate Area (sq ft / m2) | 19.50 / 1.81 | 13 / 1.21 |
| Evaporative Heating Surface (sq ft / m2) | 1306 / 121.33 | 552 / 51.28 |
| Superheating Surface (sq ft / m2) | ||
| Combined Heating Surface (sq ft / m2) | 1306 / 121.33 | 552 / 51.28 |
| Evaporative Heating Surface/Cylinder Volume | 207.14 | 154.91 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 3510 | 1950 |
| Same as above plus superheater percentage | 3510 | 1950 |
| Same as above but substitute firebox area for grate area | 19,080 | 9900 |
| Power L1 | 4717 | 2599 |
| Power MT | 346.64 | |