Kojyaku 0-6-0 Locomotives in Japan


Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 15003)

Data from Roy V Wright (Ed.) 1922 Locomotive Cyclopedia of American Practice, Sixth Edition (New York: Simmons-Boardman Publishing Company, 1922), p. 1028. See also "The Kojaku Railway Open for Traffic", Railway Review, Volume 68 (4 June 1921), p. 882. Works number was 1859.

Kojyaku Railway was built along the western shore of Lake Biwa from Otsu in the Shiga prefecture (near Kyoto) north to Takashima, then west to Obama, Wakasa on the Yellow Sea coast. Planned for a total distance of 66.75 miles (107.5 km), the first four-mile section from Otsu to Eizan in Sakamoto opened in 1921 and work on the next eight-mile section had begun.

Principal Dimensions by Steve Llanso of Middle Run Media
Class1
Locobase ID15003
RailroadKojyaku
CountryJapan
Whyte0-6-0T
Number in Class1
Road Numbers1
Gauge3'6"
Number Built1
BuilderDavenport
Year1920
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
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)48,000 / 21,772
Engine Weight (lbs / kg)48,000 / 21,772
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)950 / 3.60
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)27 / 13.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)29 / 737
Boiler Pressure (psi / kPa)165 / 1140
High Pressure Cylinders (dia x stroke) (in / mm)11" x 16" / 279x406
Tractive Effort (lbs / kg)9363 / 4246.99
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.13
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)39.20 / 3.64
Grate Area (sq ft / m2) 9.33 / 0.87
Evaporative Heating Surface (sq ft / m2)469 / 43.57
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)469 / 43.57
Evaporative Heating Surface/Cylinder Volume266.50
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1539
Same as above plus superheater percentage1539
Same as above but substitute firebox area for grate area6468
Power L13013
Power MT415.16

All material Copyright © SteamLocomotive.com
Wes Barris