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 ID12309
RailroadAmerican Sugar Company
CountryUSA
Whyte0-6-2T
Number in Class2
Road Numbers
Gauge3'
Number Built2
BuilderBurnham, Williams & Co
Year1898
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)
Axle Loading (Maximum Weight per Axle)
Weight on Drivers24000 lbs
Engine Weight29000 lbs
Tender Light Weight
Total Engine and Tender Weight29000 lbs
Tender Water Capacity900 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)13 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter33"
Boiler Pressure150 psi
Cylinders (dia x stroke)10" x 16"
Tractive Effort6182 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.88
Heating Ability
Firebox Area31 sq. ft
Grate Area 7.20 sq. ft
Evaporative Heating Surface291 sq. ft
Superheating Surface
Combined Heating Surface291 sq. ft
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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