Taiwan Railway 2-4-2 Locomotives in Formosa

Class Details by Steve Llanso of Sweat House Media

Class B10 (Locobase 3860)

[] by Ejii Nozawa data. Identical to the 500 or 600 class in Japan, these engines were built by Rober Stephenson & Sons and Nasmyth Wilson of Great Britain and Kisha-Seizo of Japan. These were the first locomotives built by KSK. Weights, boiler pressure, and heating surface varied slightly among the sub-batches. All 20 engines were delivered between 1901 and 1908.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID3860
RailroadTaiwan Railway
Number in Class20
Road Numbers
Number Built20
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)30.75 / 9.37
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)45,600 / 20,684
Engine Weight (lbs / kg)77,175 / 35,006
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)38 / 19
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)14" x 20" / 356x508
Tractive Effort (lbs / kg)
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)11.94 / 1.11
Evaporative Heating Surface (sq ft / m2)724 / 67.29
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)724 / 67.29
Evaporative Heating Surface/Cylinder Volume203.18
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1791
Same as above plus superheater percentage1791
Same as above but substitute firebox area for grate area
Power L1
Power MT

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