Wenatchee Valley & Northern 2-6-2 "Prairie" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 102 (Locobase 13438)

Data from DeGolyer Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 32, Volume 32, p. 74. Works number was 33285 in March 1909.

Yet another Baldwin logging Prairie, this one for the 16-mile timber company road based in Wenatchee, Washington. After the WV & N closed in 1916, the engine went to work for the Northern Coast Timber Company.

Principal Dimensions by Steve Llanso of Sweat House Media
Class102
Locobase ID13,438
RailroadWenatchee Valley & Northern
CountryUSA
Whyte2-6-2
Number in Class1
Road Numbers102
GaugeStd
Number Built1
BuilderBurnham, Williams & Co
Year1909
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11 / 3.35
Engine Wheelbase (ft / m)26.52 / 8.08
Ratio of driving wheelbase to overall engine wheebase 0.41
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)100,000 / 45,359
Engine Weight (lbs / kg)130,000 / 58,967
Tender Loaded Weight (lbs / kg)60,000 / 27,216
Total Engine and Tender Weight (lbs / kg)190,000 / 86,183
Tender Water Capacity (gals / ML)3000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)56 / 28
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 1118
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)27,039 / 12264.70
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.70
Heating Ability
Firebox Area (sq ft / m2)148 / 13.75
Grate Area (sq ft / m2)26.10 / 2.42
Evaporative Heating Surface (sq ft / m2)1805 / 167.69
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1805 / 167.69
Evaporative Heating Surface/Cylinder Volume255.36
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4698
Same as above plus superheater percentage4698
Same as above but substitute firebox area for grate area26,640
Power L14753
Power MT314.36

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