Day Lumber 2-6-2 "Prairie" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 2 (Locobase 13720)

Data from DeGolyer Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 36, p. 165. See also, the Free Online Encyclopedia of Washington State History found at [], last accessed 14 January 2012. Works number was 36044 in February 1911.

In the specs, a significant requirement was for the train to scale a 5% grade. The spec adds: "Loco will, at times, be required to back up this grade."

Day Lumber soon sold this logging Prairie to the Kerry Timber Company of Kerry, Ore, who put it to work on the Kerry's Columbia & Nehalem River Railroad. Its founder was the musically named Albert Sperry Kerry, who laid the Kerry Line to exploit his timber holdings in the Nehalem Valley. The project took years to accomplish, the first 25 miles only opening in June 1915.

By the mid-1920s, the Kerry Line covered 53 miles over 35 bridges and was one of the longest logging roads in the Northwest. Kerry and his partner Frank van Tuyl sold the line to the K-P Lumber Company in 1925. Among other changes, K-P renumbered the 1 as the 119. It operated the Kerry Line until 1938, by which time over 3 billion feet of lumber had traveled over the road.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID13,720
RailroadDay Lumber
Number in Class1
Road Numbers2
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11 / 3.35
Engine Wheelbase (ft / m)26.58 / 8.10
Ratio of driving wheelbase to overall engine wheebase 0.41
Overall Wheelbase (engine & tender) (ft / m) / 14.78
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)103,000 / 46,720
Engine Weight (lbs / kg)133,000 / 63,049
Tender Loaded Weight (lbs / kg)70,000 / 31,752
Total Engine and Tender Weight (lbs / kg)203,000 / 94,801
Tender Water Capacity (gals / ML)3500 / 13.26
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)1200 / 6.40
Minimum weight of rail (calculated) (lb/yd / kg/m)57 / 28.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 1118
Boiler Pressure (psi / kPa)160 / 11.70
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)24,035 / 10902.11
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.29
Heating Ability
Firebox Area (sq ft / m2)145 / 13.47
Grate Area (sq ft / m2)26 / 2.42
Evaporative Heating Surface (sq ft / m2)1802 / 167.41
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1802 / 167.41
Evaporative Heating Surface/Cylinder Volume254.93
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4160
Same as above plus superheater percentage4160
Same as above but substitute firebox area for grate area23,200
Power L14195
Power MT269.37

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Wes Barris