Data from China Monthly Review, Vol 20 (April 22, 1922), pp. 306, 308. See also DeGolyer, Vol 60, pp. 274. Works numbers were 54718, 54740 in April 1921; 54753-54761, 54778-54782, 54788-54801 in May.
The firebox played a bigger than usual part in heating the water in this design. Supplementing the firebox proper's heating surface area were 56 sq ft (5.2 sq m) in the combustion chamber and 15 sq ft (1.4 sq m) from three arch tubes.
By the time these Prairies were ordered, the Peking-Hankow (now funded by French and British money) encompassed 818 route miles (1,317 km). The 754 mile (1,214 km) main line connected Peking in the north and Hankow south on the Yangtze River. Although French staff still operated the railway, China's Ministry of Communications now had control of the finances and general administration.
The locomotives were rated to pull 2,360 tons on the level, 1,015 tons up a 1/2% grade, 675 tons up 1%, 345 ton up 2%, and 210 tons up 3%.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 65 |
| Locobase ID | 11694 |
| Railroad | Peking Hankow |
| Country | China |
| Whyte | 2-6-2 |
| Number in Class | 40 |
| Road Numbers | 65-104 |
| Gauge | Std |
| Number Built | 40 |
| Builder | Baldwin |
| Year | 1919 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 13.83 / 4.22 |
| Engine Wheelbase (ft / m) | 31.58 / 9.63 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.44 |
| Overall Wheelbase (engine & tender) (ft / m) | 53.85 / 16.41 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 33,069 / 15,000 |
| Weight on Drivers (lbs / kg) | 99,000 / 44,906 |
| Engine Weight (lbs / kg) | 155,000 / 70,307 |
| Tender Loaded Weight (lbs / kg) | 92,500 / 41,957 |
| Total Engine and Tender Weight (lbs / kg) | 247,500 / 112,264 |
| Tender Water Capacity (gals / ML) | 4800 / 18.18 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 7 / 6 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 55 / 27.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 59 / 1499 |
| Boiler Pressure (psi / kPa) | 170 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 20" x 26" / 508x660 |
| Tractive Effort (lbs / kg) | 25,471 / 11553.46 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.89 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 130 - 2" / 51 |
| Flues (number - dia) (in / mm) | 21 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 14.62 / 4.46 |
| Firebox Area (sq ft / m2) | 198 / 18.39 |
| Grate Area (sq ft / m2) | 31.50 / 2.93 |
| Evaporative Heating Surface (sq ft / m2) | 1618 / 150.32 |
| Superheating Surface (sq ft / m2) | 371 / 34.47 |
| Combined Heating Surface (sq ft / m2) | 1989 / 184.79 |
| Evaporative Heating Surface/Cylinder Volume | 171.15 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5355 |
| Same as above plus superheater percentage | 6372 |
| Same as above but substitute firebox area for grate area | 40,055 |
| Power L1 | 10,516 |
| Power MT | 702.54 |