Kin-Han 2-6-2 Locomotives in China


Class Details by Steve Llanso of Sweat House Media

Class 351 (Locobase 15013)

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 Sweat House Media

Class351
Locobase ID15013
RailroadKin-Han
CountryChina
Whyte2-6-2
Number in Class10
Road Numbers351-360
GaugeStd
Number Built10
BuilderLima
Year1919
Valve GearStephenson
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 / 11.70
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 Volume171.89
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5372
Same as above plus superheater percentage6339
Same as above but substitute firebox area for grate area41,524
Power L110,528
Power MT716.37

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