Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 21, p 296. Works number was 16333 in November 1898 and 17442 in February 1900.
American Sugar had imported locomotives to the Hawaiian Kingdom in earlier years, but this pair had a different destination: the Territory of Hawaii, now owned by the United States. And the name of the two engines -- typical sugar-plantation locomotives exactly like others supplied to Brazil (e.g.) -- reflected the new reality. Following Uncle Sam a years and a half later was Sampson, after Admiral Sampson, proud victor over the Spanish fleet at Santiago Bay in Cuba.
Once on Oahu, the Sampson would sold to the Ewa Plantation Company as their #3 but retain its name. Uncle Sam was sold in 1901 to Honolulu Sugar, which substituted Aiea for the perhaps less evocative mainlander reference.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Uncle Sam |
| Locobase ID | 12309 |
| Railroad | American Sugar Company |
| Country | USA |
| Whyte | 0-6-2T |
| Number in Class | 2 |
| Road Numbers | |
| Gauge | 3' |
| Number Built | 2 |
| Builder | Burnham, Williams & Co |
| Year | 1898 |
| 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) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 24,000 / 10,886 |
| Engine Weight (lbs / kg) | 29,000 / 13,154 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 900 / 3.41 |
| 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 / 900 |
| 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) | 7.20 / 0.67 |
| Evaporative Heating Surface (sq ft / m2) | 291 / 27.04 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 291 / 27.04 |
| Evaporative Heating Surface/Cylinder Volume | 200.69 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1080 |
| Same as above plus superheater percentage | 1080 |
| Same as above but substitute firebox area for grate area | 4650 |
| Power L1 | 2538 |
| Power MT | 699.42 |