Koloa Sugar Company 0-6-2 Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class Koloa (Locobase 12452)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 23, p 147. Works number was 18396 in November 1900.

See Locobase 14753 for information on the KSC. Working in sugar cane fields dictated the use of a Baldwin-provided 10" (254 mm) diameter Radley & Hunter spark-arresting stack. The boiler was enclosed by a planished jacket of rust-resistant "Russia Iron" (see Locobase 11179 for a description of this 19th century technique for protecting a boiler.)

A 1946 roster showed the Koloa still on the job in Kaua'i almost five decades later.

Principal Dimensions by Steve Llanso of Middle Run Media

Locobase ID12452
RailroadKoloa Sugar Company
Number in Class1
Road Numbers
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)7 / 2.13
Engine Wheelbase (ft / m)13.25 / 4.04
Ratio of driving wheelbase to overall engine wheelbase 0.53
Overall Wheelbase (engine & tender) (ft / m)13.25 / 4.04
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)24,000 / 10,886
Engine Weight (lbs / kg)31,000 / 14,061
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)31,000
Tender Water Capacity (gals / ML)450 / 1.70
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)13 / 6.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 838
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)10" x 16" / 254x406
Tractive Effort (lbs / kg)6182 / 2804.11
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.88
Heating Ability
Tubes (number - dia) (in / mm)59 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.67 / 2.95
Firebox Area (sq ft / m2)31 / 2.88
Grate Area (sq ft / m2) 7.22 / 0.67
Evaporative Heating Surface (sq ft / m2)290 / 26.95
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)290 / 26.95
Evaporative Heating Surface/Cylinder Volume200
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1083
Same as above plus superheater percentage1083
Same as above but substitute firebox area for grate area4650
Power L12532
Power MT697.76

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