Honolulu Plantation Company 0-6-2 Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class Pu'uloa (Locobase 12563)

Data from Baldwin Locomotive Works Specification for Engines, 1903, as digitized by the DeGolyer Library of Southern Methodist University Vol 24, p.96. Works number was 19741 in November 1901. See the P. Christiaan Klieger's Na Maka o Halawa - A History of Halawa, Ahupua'a , O'ahu (Honolulu: Bishop Museum Press, 1995), which includes information on Honolulu Plantation at http://www.bishopmuseum.org/research/cultstud/pdfs/NHV/Na%20Maka%20O%20Halawa.pdf

This sugar-cane saddle tanker was one of many purchased by W G Irwin on behalf of Hawaiian agricultural companies. The Honolulu Plantation holdings were on Oahu near Pearl Harbor. Pu'uloa originally was named Aiea, but the name lettered on the tank was Pu'uloa.

The railroad that began operation in 1901 (see p. 83 of the Bishop study) used the Pu'uloa as its only engine. The locomotive was kept busy as the rolling stock included 500 cane cars. Later based at the mill at 'Aiea, the Pu'uloa was sold in 1925 to the O'ahu Sugar Company, which operated in the same area of O'ahu.

Enthusiast Hal Wilmunder bought the Pu'ulao in 1964 and moved it to Camino, Calif. In 1974, the Hawaiian Railway Society bought the engine, returned it to Hawaii, where it went on display in Ewa (on O'ahu).

Specifications by Steve Llanso of Sweat House Media
Locobase ID12563
RailroadHonolulu Plantation Company
Number in Class1
Road Numbers4
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase7'
Engine Wheelbase13.25'
Ratio of driving wheelbase to overall engine wheebase 0.53
Overall Wheelbase (engine & tender)13.25'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers48000 lbs
Engine Weight54000 lbs
Tender Light Weight
Total Engine and Tender Weight54000 lbs
Tender Water Capacity750 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)27 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter33"
Boiler Pressure175 psi
Cylinders (dia x stroke)12" x 16"
Tractive Effort10385 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.62
Heating Ability
Firebox Area42.10 sq. ft
Grate Area 8.80 sq. ft
Evaporative Heating Surface545 sq. ft
Superheating Surface
Combined Heating Surface545 sq. ft
Evaporative Heating Surface/Cylinder Volume260.22
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1540
Same as above plus superheater percentage1540
Same as above but substitute firebox area for grate area7368
Power L13472
Power MT478.40

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