Tientsin-Pukow 2-6-2 Locomotives in China

Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 13488)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 32, p. 299. See also Meribeth E Cameron, The Reform Movement in China, 1898-1912, Stanford University Publications, University Series, History, Economics & Political Science, Vol III, No 1 (Stanford University Press, 1931), p. 187; and See also Frank Rhea, Far Eastern Markets for Railway Materials, Equipment, and Supplies, Special Agents Series 180, Bureau of Foreign and Domestic Commerce, US Department of Commerce (Washington, DC: Government Printing Office, 1919) , pp. 89-93. Works numbers were 32984-32985 in September 1908.

These Prairie tanks were bought to help build the T-P, which was begun in 1908 and completed in 1912. The Tientsin-Pukow loan contract signed between foreign investors and the Chines government in 1908 were so unbalanced, and the contracts so incompetently managed, according to Meribeth Cameron, that "'Tientsin-Pukow terms' became synonymous for undue leniency and insufficient care for the safety of foreign investors."

The railroad covered 627 miles (1,009 km).

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID13488
Number in Class2
Road Numbers
Number Built2
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.33 / 3.45
Engine Wheelbase (ft / m)25.17 / 7.67
Ratio of driving wheelbase to overall engine wheelbase 0.45
Overall Wheelbase (engine & tender) (ft / m)25.17 / 7.67
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)78,000 / 35,380
Engine Weight (lbs / kg)85,000 / 38,555
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)85,000 / 38,555
Tender Water Capacity (gals / ML)1500 / 5.68
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)43 / 21.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 1219
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)15" x 22" / 381x559
Tractive Effort (lbs / kg)14,025 / 6361.64
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.56
Heating Ability
Tubes (number - dia) (in / mm)175 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.50 / 3.20
Firebox Area (sq ft / m2)86.20 / 8.01
Grate Area (sq ft / m2)18.20 / 1.69
Evaporative Heating Surface (sq ft / m2)1038 / 96.43
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1038 / 96.43
Evaporative Heating Surface/Cylinder Volume230.68
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2912
Same as above plus superheater percentage2912
Same as above but substitute firebox area for grate area13,792
Power L14179
Power MT354.35

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