Honolulu Plantation Company 0-6-2 Locomotives in the USA
Class Details by Steve Llanso of Sweat House Media
Class Pu'uloa (Locobase 12563)
Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 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 [
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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).
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Pu'uloa |
| Locobase ID | 12563 |
| Railroad | Honolulu Plantation Company |
| Country | USA |
| Whyte | 0-6-2ST |
| Number in Class | 1 |
| Road Numbers | 4 |
| Gauge | 3' |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1901 |
| Valve Gear | Stephenson |
| 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) | 48,000 / 21,772 |
| Engine Weight (lbs / kg) | 54,000 / 24,494 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 54,000 |
| Tender Water Capacity (gals / ML) | 750 / 2.84 |
| 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) | 33 / 838 |
| Boiler Pressure (psi / kPa) | 175 / 1210 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12" x 16" / 305x406 |
| Tractive Effort (lbs / kg) | 10,385 / 4710.56 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.62 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 109 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.17 / 3.10 |
| Firebox Area (sq ft / m2) | 42.10 / 3.91 |
| Grate Area (sq ft / m2) | 8.80 / 0.82 |
| Evaporative Heating Surface (sq ft / m2) | 545 / 50.65 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 545 / 50.65 |
| Evaporative Heating Surface/Cylinder Volume | 260.77 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1540 |
| Same as above plus superheater percentage | 1540 |
| Same as above but substitute firebox area for grate area | 7368 |
| Power L1 | 3479 |
| Power MT | 479.37 |