Geibi 2-6-2 Locomotives in Japan


Class Details by Steve Llanso of Sweat House Media

Class 7 (Locobase 14613)

Data from Baldwin Locomotive Works Specification for Engines, as digitized by the DeGolyer Library of Southern Methodist University, Vol 60, p. 102+. Works number was 54259 in January 1921.

The Geibi line is located in western Japan in Chikugo Province. The railway began construction in the port city of Hiroshima in 1915 and had been completed to Mikkaichi some 88.6 km (55 miles) by 1930.

Principal Dimensions by Steve Llanso of Middle Run Media
Class7
Locobase ID14613
RailroadGeibi
CountryJapan
Whyte2-6-2T
Number in Class1
Road Numbers7
Gauge3'6"
Number Built1
BuilderBaldwin
Year1921
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.75 / 2.97
Engine Wheelbase (ft / m)22 / 6.71
Ratio of driving wheelbase to overall engine wheelbase 0.44
Overall Wheelbase (engine & tender) (ft / m)22 / 6.71
Axle Loading (Maximum Weight per Axle) (lbs / kg)21,280 / 9652
Weight on Drivers (lbs / kg)62,300 / 28,259
Engine Weight (lbs / kg)83,400 / 37,830
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)83,400 / 37,830
Tender Water Capacity (gals / ML)1000 / 3.79
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 1.50 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)35 / 17.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 1118
Boiler Pressure (psi / kPa)160 / 1100
High Pressure Cylinders (dia x stroke) (in / mm)15" x 20" / 381x508
Tractive Effort (lbs / kg)13,909 / 6309.02
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.48
Heating Ability
Tubes (number - dia) (in / mm)152 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.17 / 2.80
Firebox Area (sq ft / m2)71 / 6.60
Grate Area (sq ft / m2)16 / 1.49
Evaporative Heating Surface (sq ft / m2)703 / 65.31
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)703 / 65.31
Evaporative Heating Surface/Cylinder Volume171.86
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2560
Same as above plus superheater percentage2560
Same as above but substitute firebox area for grate area11,360
Power L13035
Power MT322.20

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