Wailuku 0-6-2 Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class George H Robertson (Locobase 13158)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 54, p. 412. Works number was 42166 in June 1915.

The Wailuku plantation wasn't profligate in its spending on locomotives. It waited eight years after delivery of its second locomotive (Locobase 13157) before it ordered this one. Although about the same size as the Prairie tank, the George H Robertson gave up the front axle and used a boiler with smaller-diameter tubes. Its water and oil-fuel tanks were larger, but it weighed less than the P C Jones. A 1922 photograph shows the cabbage stack with spark arrester.

At the end of that year, the Wailuke Company owned 3,395 acres of cane cultivation, 142 uncultivated acres, and 16,499 acres of forest and pasture land owned in fee.

Specifications by Steve Llanso of Sweat House Media
ClassGeorge H Robertson
Locobase ID13158
Number in Class1
Road Numbers4
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase 7.50'
Engine Wheelbase14.58'
Ratio of driving wheelbase to overall engine wheebase 0.51
Overall Wheelbase (engine & tender)14.58'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers34000 lbs
Engine Weight39000 lbs
Tender Light Weight
Total Engine and Tender Weight39000 lbs
Tender Water Capacity1000 gals
Tender Fuel Capacity (oil/coal)300 gals
Minimum weight of rail (calculated)19 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter33"
Boiler Pressure160 psi
Cylinders (dia x stroke)11" x 16"
Tractive Effort7979 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.26
Heating Ability
Firebox Area40 sq. ft
Grate Area 8.90 sq. ft
Evaporative Heating Surface370 sq. ft
Superheating Surface
Combined Heating Surface370 sq. ft
Evaporative Heating Surface/Cylinder Volume210.24
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1424
Same as above plus superheater percentage1424
Same as above but substitute firebox area for grate area6400
Power L12850
Power MT554.40

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