Ewa Plantation Company 0-6-2 Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 6 (Locobase 12795)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 27, p 283. Works number was 25710 in May 1905.

Castle & Cooke's Ewa Plantation received this typical sugar saddle tank through W G Irwin, a well-known broker. The engine's remit was challenging: It had to scale grades of between 2 1/2 and 3% and negotiate curves between 16 and 26 degrees radius, sometimes in an S layout. The cane cars weighed between 2,800 and 3,000 lb empty (1,270-1,361 kg) and carried 3 1/2 to 5 tons when loaded.

Specifications by Steve Llanso of Sweat House Media
Locobase ID12,795
RailroadEwa Plantation Company
Number in Class1
Road Numbers6
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)7
Engine Wheelbase (ft)13
Ratio of driving wheelbase to overall engine wheebase 0.54
Overall Wheelbase (engine & tender) (ft)13
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)36,000
Engine Weight (lbs)42,000
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)42,000
Tender Water Capacity (gals)500
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)20
Geometry Relating to Tractive Effort
Driver Diameter (in)33
Boiler Pressure (psi)160
High Pressure Cylinders (dia x stroke) (in)11" x 16"
Tractive Effort (lbs)7979
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.51
Heating Ability
Firebox Area (sq ft)35.73
Grate Area (sq ft) 7.38
Evaporative Heating Surface (sq ft)336
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)336
Evaporative Heating Surface/Cylinder Volume190.92
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1181
Same as above plus superheater percentage1181
Same as above but substitute firebox area for grate area5717
Power L12573
Power MT472.71

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