Kekaha Sugar Company 2-6-2 "Prairie" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class Kola (Locobase 12407)

Data from Baldwin Locomotive Works Specification for Engines, 1890, as digitized by the DeGolyer Library of Southern Methodist University Vol 23, p. 92. For more information on the Kekaha Sugar Company, see the Hawaiian Sugar Planters' Association Plantation Archives online at . Works numbers were 18356 in October 1900, 23879 in March 1904, and 35726 in December 1910.

Prairie tanks small enough to trip over in the dark, an impression that Locobase considers only a small exaggeration. Five axles under so small a boiler and grate meant very light rail, such as found on a Hawaiian sugar plantation on the island of Kauai. Kola was satisfactory enough that the Kekaha Company took delivery of the Noholi, ordered in 1900 but produced in 1904, and the Poki'i, which arrived in 1911.

Specifications by Steve Llanso of Sweat House Media
Locobase ID12407
RailroadKekaha Sugar Company
Number in Class3
Road Numbers1-3
Number Built3
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase 6.83'
Engine Wheelbase18.83'
Ratio of driving wheelbase to overall engine wheebase 0.36
Overall Wheelbase (engine & tender)18.83'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers24000 lbs
Engine Weight35000 lbs
Tender Light Weight
Total Engine and Tender Weight35000 lbs
Tender Water Capacity400 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)13 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter33"
Boiler Pressure150 psi
Cylinders (dia x stroke)9" x 16"
Tractive Effort5007 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.79
Heating Ability
Firebox Area31.80 sq. ft
Grate Area 5.19 sq. ft
Evaporative Heating Surface230 sq. ft
Superheating Surface
Combined Heating Surface230 sq. ft
Evaporative Heating Surface/Cylinder Volume195.23
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation779
Same as above plus superheater percentage779
Same as above but substitute firebox area for grate area4770
Power L12724
Power MT750.67

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