McBryde Sugar 0-6-2 Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class Lawai (Locobase 12687)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 21, p 296. Works number was 22445 in July 1903.

Locobases 12319-12320 showed several narrow-gauge saddle tanks of very similar dimensions that had gone to work on Hawaiian plantations a few years before the Lawai arrived. Its 200-psi boiler significantly boosted the power available to the skinny-rail system on which it worked.

In 1934, the Lawai went to the Lilue Plantation as the Iliahi.

Class Wainiha (Locobase 14529)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 54, pp. 418+. See also the Hawaiian Sugar Planters' Association Plantation Archives entry at . Works numbers 42401 in September 1915.

Sugar producers Alexander & Baldwin bought this plantation radial tank for a southern Kauai sugar company (see Locobase 12406 for a history of the plantation). The specification pages discuss several construction details designed to reduce the risk of accidental fires in addition to the fitting of a standard Radley & Hunter flared stack. The ash pan was fitted with netting to catch hot ash and two dampers with a water pipe leading from the tank and arranged to sprinkle water. The smokebox was extended so that the cleaning door was at least 30 inches (762 mm) from the center line of the stack. Water blowers on the bottom and sides blew out ashes, a heavy netting screen mounted above the top row of tubes as a spark arrester was to be "conveniently arranged" to allow for the cleaning of tubes.

This engine wound up on the Lihue Plantation sometime after 1939.

Specifications by Steve Llanso of Sweat House Media
Locobase ID12687 14529
RailroadMcBryde SugarMcBryde Sugar
Number in Class31
Road Numbers4
Number Built31
BuilderBurnham, Williams & CoBaldwin
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase7'7'
Engine Wheelbase13'14.08'
Ratio of driving wheelbase to overall engine wheebase 0.54 0.50
Overall Wheelbase (engine & tender)13'14.08'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers41000 lbs45000 lbs
Engine Weight48000 lbs52000 lbs
Tender Light Weight
Total Engine and Tender Weight48000 lbs52000 lbs
Tender Water Capacity750 gals800 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)23 lb/yard25 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter33"33"
Boiler Pressure200 psi165 psi
Cylinders (dia x stroke)11" x 16"10" x 16"
Tractive Effort9973 lbs6800 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.11 6.62
Heating Ability
Firebox Area35.73 sq. ft40 sq. ft
Grate Area 7.38 sq. ft10.60 sq. ft
Evaporative Heating Surface336 sq. ft442 sq. ft
Superheating Surface
Combined Heating Surface336 sq. ft442 sq. ft
Evaporative Heating Surface/Cylinder Volume190.92303.90
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation14761749
Same as above plus superheater percentage14761749
Same as above but substitute firebox area for grate area71466600
Power L132174006
Power MT518.95588.78

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