Ewa Plantation Company 2-6-2 "Prairie" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class George F Renton, Jr (Locobase 15281)

Data from DeGolyer, Vol 72, pp. 245+. See also the Hawaii Sugar Planters Association Plantation Archives entry at [], last accessed 2 July 2013. Works number was 57851 in June 1924.

Except for the use of oil and the consequent differences in the firebox, this small plantation locomotive was an exact duplicate of the Surry, Southampton & Sussex Prairies delivered to that eastern Virginia timber company in 19191-1920 (Locobase 11006).

By the time this locomotive arrived on Oahu in the Hawaiian Islands, its railway covered 30 miles (48 km). Its company community held 2,500 residents in several laborers camps. The settlement included, the plantation store, kindergarten, clubhouse, hospital and dispensary, and several outlying camps. Sixteen artesian wells supplied the cane fields with water and the company continued looking for more.

Principal Dimensions by Steve Llanso of Sweat House Media
ClassGeorge F Renton, Jr
Locobase ID15,281
RailroadEwa Plantation Company
Number in Class1
Road Numbers7
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.75 / 2.36
Engine Wheelbase (ft / m)20.75 / 6.32
Ratio of driving wheelbase to overall engine wheebase 0.37
Overall Wheelbase (engine & tender) (ft / m)38.98 / 11.88
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)40,000 / 18,144
Engine Weight (lbs / kg)56,000 / 25,401
Tender Loaded Weight (lbs / kg)38,000 / 17,237
Total Engine and Tender Weight (lbs / kg)94,000 / 42,638
Tender Water Capacity (gals / ML)1700 / 6.44
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)700 / 2.70
Minimum weight of rail (calculated) (lb/yd / kg/m)22 / 11
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)37 / 940
Boiler Pressure (psi / kPa)170 / 11.70
High Pressure Cylinders (dia x stroke) (in / mm)12" x 18" / 305x457
Tractive Effort (lbs / kg)10,123 / 4591.72
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.95
Heating Ability
Firebox Area (sq ft / m2)50 / 4.65
Grate Area (sq ft / m2)13.20 / 1.23
Evaporative Heating Surface (sq ft / m2)534 / 49.61
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)534 / 49.61
Evaporative Heating Surface/Cylinder Volume226.64
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2244
Same as above plus superheater percentage2244
Same as above but substitute firebox area for grate area8500
Power L13488
Power MT576.73

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