Wiscasset, Waterville & Farmington 2-6-2 "Prairie" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 6 (Locobase 12849)

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 31691 in September 1907.

6 later was converted to using Southern valve gear.

Principal Dimensions by Steve Llanso of Sweat House Media
Class6
Locobase ID12,849
RailroadWiscasset, Waterville & Farmington
CountryUSA
Whyte2-6-2
Number in Class1
Road Numbers6
Gauge2'
Number Built1
BuilderBurnham, Williams & Co
Year1907
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)7 / 2.13
Engine Wheelbase (ft / m)20 / 6.10
Ratio of driving wheelbase to overall engine wheebase 0.35
Overall Wheelbase (engine & tender) (ft / m)37.50 / 11.43
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)40,000 / 18,144
Engine Weight (lbs / kg)51,500 / 23,360
Tender Loaded Weight (lbs / kg)30,000 / 13,608
Total Engine and Tender Weight (lbs / kg)81,500 / 36,968
Tender Water Capacity (gals / ML)1500 / 5.68
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)22 / 11
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)12" x 16" / 305x406
Tractive Effort (lbs / kg)10,682 / 4845.28
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.74
Heating Ability
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2) 9.30 / 0.86
Evaporative Heating Surface (sq ft / m2)
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)
Evaporative Heating Surface/Cylinder Volume
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1674
Same as above plus superheater percentage1674
Same as above but substitute firebox area for grate area
Power L1
Power MT

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