Ewa Plantation Company 2-6-2 "Prairie" Locomotives of 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 http://www2.hawaii.edu/~speccoll/p_ewa.html, 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.

Specifications by Steve Llanso of Sweat House Media
ClassGeorge F Renton, Jr
Locobase ID15281
RailroadEwa Plantation Company
Number in Class1
Road Numbers7
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase 7.75'
Engine Wheelbase20.75'
Ratio of driving wheelbase to overall engine wheebase 0.37
Overall Wheelbase (engine & tender)38.98'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers40000 lbs
Engine Weight56000 lbs
Tender Light Weight38000 lbs
Total Engine and Tender Weight94000 lbs
Tender Water Capacity1700 gals
Tender Fuel Capacity (oil/coal)700 gals
Minimum weight of rail (calculated)22 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter37"
Boiler Pressure170 psi
Cylinders (dia x stroke)12" x 18"
Tractive Effort10123 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.95
Heating Ability
Firebox Area50 sq. ft
Grate Area13.20 sq. ft
Evaporative Heating Surface534 sq. ft
Superheating Surface
Combined Heating Surface534 sq. ft
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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