Kekaha Sugar Company 2-6-2 "Prairie" Locomotives in 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.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Kola |
| Locobase ID | 12407 |
| Railroad | Kekaha Sugar Company |
| Country | USA |
| Whyte | 2-6-2T |
| Number in Class | 3 |
| Road Numbers | 1-3 |
| Gauge | 2'6" |
| Number Built | 3 |
| Builder | Burnham, Williams & Co |
| Year | 1900 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 6.83 / 2.08 |
| Engine Wheelbase (ft / m) | 18.83 / 5.74 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.36 |
| Overall Wheelbase (engine & tender) (ft / m) | 18.83 / 5.74 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 24,000 / 10,886 |
| Engine Weight (lbs / kg) | 35,000 / 15,876 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 35,000 |
| Tender Water Capacity (gals / ML) | 400 / 1.52 |
| 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 / 1030 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 9" x 16" / 229x406 |
| Tractive Effort (lbs / kg) | 5007 / 2271.14 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.79 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 45 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9.67 / 2.95 |
| Firebox Area (sq ft / m2) | 31.80 / 2.96 |
| Grate Area (sq ft / m2) | 5.19 / 0.48 |
| Evaporative Heating Surface (sq ft / m2) | 230 / 21.38 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 230 / 21.38 |
| Evaporative Heating Surface/Cylinder Volume | 194.92 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 779 |
| Same as above plus superheater percentage | 779 |
| Same as above but substitute firebox area for grate area | 4770 |
| Power L1 | 2720 |
| Power MT | 749.57 |