Peipiao Mines 0-4-0 Locomotives in China

Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 15409)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 78, pp. 360. Works numbers were 58435 in May 1925.

The Peipao coal fields were described in 1921 as holding a "bituminous variety of excellent quality", indeed "superior to much of the coal ...mined in North China." The railway rolled on 60 lb/yard (30 kg/metre) rail up relatively modest 1.25% grades.

This saddle tank was ordered with a copper top on the stack, but the specs expressly stated that the tubes were "NOT to be welded to fire box tube sheet."

Principal Dimensions by Steve Llanso of Middle Run Media

Locobase ID15409
RailroadPeipiao Mines
Number in Class1
Road Numbers1
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)6 / 1.83
Engine Wheelbase (ft / m)6 / 1.83
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m)6 / 1.83
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)61,000 / 27,669
Engine Weight (lbs / kg)61,000 / 27,669
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)61,000 / 27,669
Tender Water Capacity (gals / ML)1000 / 3.79
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)51 / 25.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 1118
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)13" x 22" / 330x559
Tractive Effort (lbs / kg)12,929 / 5864.50
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.72
Heating Ability
Tubes (number - dia) (in / mm)83 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.10 / 2.77
Firebox Area (sq ft / m2)43 / 3.99
Grate Area (sq ft / m2)10 / 0.93
Evaporative Heating Surface (sq ft / m2)387 / 35.95
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)387 / 35.95
Evaporative Heating Surface/Cylinder Volume114.51
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1800
Same as above plus superheater percentage1800
Same as above but substitute firebox area for grate area7740
Power L12351
Power MT169.94

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Wes Barris