Hamakua Sugar Company / Hawaiian Sugar Company / Honolulu Sugar Company 0-6-2 Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class Kaohe (Locobase 14526)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 54. pp. 408+. Works number was 44271 in October 1916.

The HSC consisted of seven sugar companies: Hamakua Mill Company, Honoka`a Sugar, Kaiwiki Sugar, Kukaiau Plantation Co., Laupahoehoe Sugar, Pa`auhau Sugar Plantation and Pacific Sugar Mill. The radial tank in this spec had an "arsenical copper" firebox.


Class Kokee (Locobase 15405)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 78, p. 337. See also the National Register of Historic Places Nomination Form for this locomotive (and several other Grove Farm engines) at http://www.historichawaii.org/Historic_Properties/Kauai_Non_Residential/PDF/Kauai_Puhi_GroveFarmLocomotives.pdf . Works number was 58557 in July 1925.

Hawaiian sugar plantations used a lot of Baldwin rear truck tank engines and the Kokee fit right in. It was an oil burner with especially small drivers, which cut speed but increased tractive effort.

This engine was later sold for $4,000 to Grove Farm on Kauai in 1941 and renamed Kaipu after the owner's "right-hand man". It was retired in 1953, stored under cover, and was restored for operation in 1982.


Class Mokuaweoweo (Locobase 12661)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 25, p 227. Works number was 21834 in March 1903.

This saddle-tanker was another in a series of sugar-plantation locomotives that shared the same power, boiler, and firebox dimensions. The only real differences among the group (mostly exported to Hawaiian islands) were gauge and weight. The Mokuaweoweo weighed a bit more than the others.

Honolulu Sugar operated the engine until 1938, when it was sold to the Honokaa Sugar Co.

Specifications by Steve Llanso of Sweat House Media
ClassKaoheKokeeMokuaweoweo
Locobase ID14526 15405 12661
RailroadHamakua Sugar CompanyHawaiian Sugar CompanyHonolulu Sugar Company
CountryUSAUSAUSA
Whyte0-6-2ST0-6-2ST0-6-2ST
Number in Class111
Road Numbers6
Gauge3'3'3'
Number Built111
BuilderBaldwinBaldwinBurnham, Williams & Co
Year191619251903
Valve GearStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase7' 6.33'7'
Engine Wheelbase13.58'13'13.25'
Ratio of driving wheelbase to overall engine wheebase 0.52 0.49 0.53
Overall Wheelbase (engine & tender)13.58'13'13.25'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers33000 lbs36000 lbs28000 lbs
Engine Weight37000 lbs46000 lbs34000 lbs
Tender Light Weight
Total Engine and Tender Weight37000 lbs46000 lbs34000 lbs
Tender Water Capacity450 gals700 gals500 gals
Tender Fuel Capacity (oil/coal)250 gals250 gals gals
Minimum weight of rail (calculated)18 lb/yard20 lb/yard16 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter33"30"33"
Boiler Pressure165 psi165 psi150 psi
Cylinders (dia x stroke)10" x 16"10" x 16"10" x 16"
Tractive Effort6800 lbs7480 lbs6182 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.85 4.81 4.53
Heating Ability
Firebox Area36 sq. ft36 sq. ft31 sq. ft
Grate Area 7.10 sq. ft 7.30 sq. ft 7.22 sq. ft
Evaporative Heating Surface321 sq. ft321 sq. ft290 sq. ft
Superheating Surface
Combined Heating Surface321 sq. ft321 sq. ft290 sq. ft
Evaporative Heating Surface/Cylinder Volume220.70220.70199.39
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation117212051083
Same as above plus superheater percentage117212051083
Same as above but substitute firebox area for grate area594059404650
Power L1312628422524
Power MT626.51522.13596.19


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