Kiwa 2-4-2 Locomotives in Japan

Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 2909)

Data from Catalogue Descriptive of Simple and Compound Locomotives built by Brooks Locomotive Works, Dunkirk, NY (Buffalo, NY: Matthew-Northrup Company, 1899);

Builder info from B.Rumary, 25 Kingscombe, Gurney Slade, Radstock, BA3 4TH, ENGLAND and Jeremy Lambert as supplied by Allen Stanley in March 2004. Works number was 3493.

Passenger tank engine with considerable overhang front and rear (i.e., enough room forward to have been a 4-4-2T.) The Kiwa Railway was authorized to build 32.34 miles (52.1 km) of which 10.79 miles (17.4 km) had been completed by 31 July 1898. It was merged with the Nanwa in the same year.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID2909
Number in Class4
Road Numbers1-4
Number Built4
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.50 / 2.29
Engine Wheelbase (ft / m)19.50 / 5.94
Ratio of driving wheelbase to overall engine wheelbase 0.38
Overall Wheelbase (engine & tender) (ft / m)19.50 / 5.94
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)43,800 / 19,867
Engine Weight (lbs / kg)
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)1200 / 4.55
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)2 / 2
Minimum weight of rail (calculated) (lb/yd / kg/m)37 / 18.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)52 / 1320
Boiler Pressure (psi / kPa)140 / 9.70
High Pressure Cylinders (dia x stroke) (in / mm)14" x 20" / 356x508
Tractive Effort (lbs / kg)8971 / 4069.18
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.88
Heating Ability
Tubes (number - dia) (in / mm)150 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.70 / 2.96
Firebox Area (sq ft / m2)64 / 5.95
Grate Area (sq ft / m2)12.50 / 1.16
Evaporative Heating Surface (sq ft / m2)722 / 67.10
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)722 / 67.10
Evaporative Heating Surface/Cylinder Volume202.62
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1750
Same as above plus superheater percentage1750
Same as above but substitute firebox area for grate area8960
Power L13548
Power MT357.17

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Wes Barris