Data from Roy V Wright (Ed.) 1922 Locomotive Cyclopedia of American Practice, Sixth Edition (New York: Simmons-Boardman Publishing Company, 1922), p. 1004. See also "Prairie Type Locomotives for the Kin-Han", Railway Mechanical Engineer, Vol 94, No 3 (March 1920), p. 142. Works numbers were 5880-5889 in August 1919.
Steam was admitted to the cylinders through 12" (305 mm) piston valves. The large firebox heating surface area included a combustion chamber.
According to the RME report, the railway from Peking to Hankow (Kin-Han) imposed some stringent contraints on the locomotives' design. Weight had to be tightly controlled, the reciprocating parts required careful counterbalancing to avoid dynamic augment (hammer blow) that exceeded 15% of the static wheel load at 50 km/h, and the locomotives needed to negotiate 22-degree curves (radii of 260 feet).
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 351 |
| Locobase ID | 15013 |
| Railroad | Kin-Han |
| Country | China |
| Whyte | 2-6-2 |
| Number in Class | 10 |
| Road Numbers | 351-360 |
| Gauge | Std |
| Number Built | 10 |
| Builder | Lima |
| Year | 1919 |
| Valve Gear | Stephenson |
| 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) | 53.83 / 16.41 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 97,200 / 44,089 |
| Engine Weight (lbs / kg) | 156,000 / 70,760 |
| Tender Loaded Weight (lbs / kg) | 91,600 / 41,549 |
| Total Engine and Tender Weight (lbs / kg) | 247,600 / 112,309 |
| Tender Water Capacity (gals / ML) | 4800 / 18.18 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6.65 / 6 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 54 / 27 |
| 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) | 3.82 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 130 - 2" / 51 |
| Flues (number - dia) (in / mm) | 21 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 14.58 / 4.44 |
| Firebox Area (sq ft / m2) | 207 / 19.23 |
| Grate Area (sq ft / m2) | 31.60 / 2.94 |
| Evaporative Heating Surface (sq ft / m2) | 1625 / 150.97 |
| Superheating Surface (sq ft / m2) | 366 / 34 |
| Combined Heating Surface (sq ft / m2) | 1991 / 184.97 |
| Evaporative Heating Surface/Cylinder Volume | 171.89 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5372 |
| Same as above plus superheater percentage | 6339 |
| Same as above but substitute firebox area for grate area | 41,524 |
| Power L1 | 10,528 |
| Power MT | 716.37 |