Oahu Railway & Land Company 2-8-0 "Consolidation" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 22 (Locobase 10782)

Data from Baldwin Locomotive Works, Record of Recent Construction ((1903), No. 35, p. 190-191. See also DeGolyer, Volume 24, p. 257. Works numbers were 20324-20325.

These powerful little Consolidations operated as Vauclain compounds for only a few years before being rebuilt in 1906 as 16 1/2" x 20" simple-expansion engines. The design sported a combustion chamber that contributed 18.6 sq ft to the firebox heating surface. In that configuration they served the OR & L for another 30-plus before being retired in 1948 with the closing of all of the line outside of terminal areas.

The OR&L opened in 1889 on a 12-mile stretch of rail between Honolulu and 'Aiea and gradually expanded to cover 160 miles that included double-tracked main and automatic block signals. At its busiest, the line ran 80 trains a day.

The OR&L served much of Oah'u up through the World War II years, then lost ground quickly to motorized freight and passenger vehicles and much of the OR & L was taken up in 1947 after a strike closed down 33 of 34 sugar plantations and a 1946 tsunami swamped much of the OR & L's tracks.

Principal Dimensions by Steve Llanso of Middle Run Media

Locobase ID10782
RailroadOahu Railway & Land Company
Number in Class2
Road Numbers22, 31
Number Built2
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11 / 3.35
Engine Wheelbase (ft / m)18.08 / 5.51
Ratio of driving wheelbase to overall engine wheelbase 0.61
Overall Wheelbase (engine & tender) (ft / m)42.50 / 12.95
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)82,360 / 37,358
Engine Weight (lbs / kg)90,260 / 40,941
Tender Loaded Weight (lbs / kg)34,740 / 15,758
Total Engine and Tender Weight (lbs / kg)125,000 / 56,699
Tender Water Capacity (gals / ML)1800 / 6.82
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)34 / 17
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)38 / 965
Boiler Pressure (psi / kPa)200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)11.5" x 20" / 292x508
Low Pressure Cylinders (dia x stroke) (in / mm)19" x 20" / 483x508
Tractive Effort (lbs / kg)17,321 / 7856.68
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.75
Heating Ability
Tubes (number - dia) (in / mm)122 - 2.25" / 57
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)13.23 / 4.03
Firebox Area (sq ft / m2)84.70 / 7.87
Grate Area (sq ft / m2)15.70 / 1.46
Evaporative Heating Surface (sq ft / m2)1028 / 95.54
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1028 / 95.54
Evaporative Heating Surface/Cylinder Volume427.12
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3140
Same as above plus superheater percentage3140
Same as above but substitute firebox area for grate area16,940
Power L12801
Power MT299.91

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