Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 60, pp. 146. Works numbers were 54481-54484 in January 1921.
Differences in how locomotives of similar type were put to work depending on conditions are shown by the Baldwin specification's description of these little tanks' service as "passenger and freight." Obviously the line was small and lightly built and its administration could scarcely afford to roster specialized locomotives. Although undoubtedly slow-moving, these engines had the power to handle the 3% grades and curve radii of 40 metres (131 feet).
Principal Dimensions by Steve Llanso of Sweat House Media | |
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Class | 9 |
Locobase ID | 14631 |
Railroad | Yunnan Kopei |
Country | China |
Whyte | 0-8-0T |
Number in Class | 4 |
Road Numbers | 9-12 |
Gauge | 60 cm |
Number Built | 4 |
Builder | Baldwin |
Year | 1921 |
Valve Gear | Stephenson |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 7.25 / 2.21 |
Engine Wheelbase (ft / m) | 7.25 / 2.21 |
Ratio of driving wheelbase to overall engine wheelbase | 1 |
Overall Wheelbase (engine & tender) (ft / m) | 7.25 / 2.21 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 11,023 / 5000 |
Weight on Drivers (lbs / kg) | 41,000 / 18,597 |
Engine Weight (lbs / kg) | 41,000 / 18,597 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | 41,000 / 18,597 |
Tender Water Capacity (gals / ML) | 600 / 2.27 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.80 / 1 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 17 / 8.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 25.50 / 648 |
Boiler Pressure (psi / kPa) | 175 / 12.10 |
High Pressure Cylinders (dia x stroke) (in / mm) | 11" x 14" / 279x356 |
Tractive Effort (lbs / kg) | 9882 / 4482.41 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.15 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 77 - 1.75" / 44 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 10 / 3.05 |
Firebox Area (sq ft / m2) | 35 / 3.25 |
Grate Area (sq ft / m2) | 7 / 0.65 |
Evaporative Heating Surface (sq ft / m2) | 385 / 35.77 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 385 / 35.77 |
Evaporative Heating Surface/Cylinder Volume | 250.02 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 1225 |
Same as above plus superheater percentage | 1225 |
Same as above but substitute firebox area for grate area | 6125 |
Power L1 | 2705 |
Power MT | 581.80 |