American Sugar Company 0-6-2 Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class Uncle Sam (Locobase 12309)

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.

Specifications by Steve Llanso of Sweat House Media
ClassUncle Sam
Locobase ID12,309
RailroadAmerican Sugar Company
Number in Class2
Road Numbers
Number Built2
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)7
Engine Wheelbase (ft)13.25
Ratio of driving wheelbase to overall engine wheebase 0.53
Overall Wheelbase (engine & tender) (ft)
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)24,000
Engine Weight (lbs)29,000
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)29,000
Tender Water Capacity (gals)900
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)13
Geometry Relating to Tractive Effort
Driver Diameter (in)33
Boiler Pressure (psi)150
High Pressure Cylinders (dia x stroke) (in)10" x 16"
Tractive Effort (lbs)6182
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.88
Heating Ability
Firebox Area (sq ft)31
Grate Area (sq ft) 7.20
Evaporative Heating Surface (sq ft)291
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)291
Evaporative Heating Surface/Cylinder Volume200.08
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1080
Same as above plus superheater percentage1080
Same as above but substitute firebox area for grate area4650
Power L12530
Power MT697.21

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