Wiscasset, Waterville & Farmington 2-4-4 Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 7 (Locobase 12848)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 31, p. 28 Works number was 31692 in September 1907.

The WW & F Railway succeeded the WW & F Railroad, which went into foreclosure in 1906. By 1916, this small Maine railroad ran from Wiscasset to Albion, a distance of 43.5 miles. In that same year, its net earnings were recorded as $17.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID12,848
RailroadWiscasset, Waterville & Farmington
Number in Class1
Road Numbers7
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 4.50 / 1.37
Engine Wheelbase (ft / m)23.50 / 7.16
Ratio of driving wheelbase to overall engine wheebase 0.19
Overall Wheelbase (engine & tender) (ft / m)23.50 / 7.16
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)32,000 / 14,515
Engine Weight (lbs / kg)54,000 / 24,494
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)54,000
Tender Water Capacity (gals / ML)500 / 1.89
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)27 / 13.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 838
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)11" x 14" / 279x356
Tractive Effort (lbs / kg)7854 / 3562.52
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.07
Heating Ability
Firebox Area (sq ft / m2)52 / 4.83
Grate Area (sq ft / m2)10.90 / 1.01
Evaporative Heating Surface (sq ft / m2)507 / 47.12
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)507 / 47.12
Evaporative Heating Surface/Cylinder Volume329.24
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1962
Same as above plus superheater percentage1962
Same as above but substitute firebox area for grate area9360
Power L14931
Power MT679.44

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