Wichita Falls & Northwestern 4-6-0 "Ten-Wheeler" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 26 (Locobase 13328)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 39, p. 163. See also the description of the Clinton & Oklahoma Western by Bob Burton, "The Development of Santa Feªs Plains Division Borger District", The Warbonnet, 3rd Quarter 1999, archived at [] . Works numbers were 36293-36294 in March 1911.

The Agricola de Colombres ordered 8 Ten-wheelers in early 1911, but as time approached for them to take delivery, they were forced to decline. Thanks to a good market and energetic sales reps, Baldwin was able to place these orphans on several short lines in the United States.

The Wichita Fall Route took two of the engines, but sold them in June 1913 to the Clinton & Oklahoma Western, which was chartered in 1908 to serve the Texas Panhandle. By the time it bought the two Ten-wheelers, it had built westward from Clinton through Butler on to Strong City. Its further extension to Cheyenne was blocked by the construction of the Cheyenne Short Line. This sketchily financed and built road went into receivership and in 1920 was merged with the Cow (as its "Calf", as the local nickname suggested).

Years later, a Cheyenne-Pampa line was completed after the C & OW was bought by the Atchison, Topeka & Santa Fe in 1928. The Cheyenne-Pampa line was officially opened on May 15, 1929. Meanwhile the

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID13,328
RailroadWichita Falls & Northwestern
Number in Class2
Road Numbers26-27 / 2436-2437
Number Built2
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.33 / 3.45
Engine Wheelbase (ft / m)22.17 / 6.76
Ratio of driving wheelbase to overall engine wheebase 0.51
Overall Wheelbase (engine & tender) (ft / m)49.04 / 14.95
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)96,000 / 43,545
Engine Weight (lbs / kg)124,000 / 56,246
Tender Loaded Weight (lbs / kg)80,000 / 36,287
Total Engine and Tender Weight (lbs / kg)204,000 / 92,533
Tender Water Capacity (gals / ML)5000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)53 / 26.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)56 / 1422
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)18" x 26" / 457x660
Tractive Effort (lbs / kg)23,016 / 10439.89
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.17
Heating Ability
Firebox Area (sq ft / m2)150 / 13.94
Grate Area (sq ft / m2)22.40 / 2.08
Evaporative Heating Surface (sq ft / m2)1918 / 178.19
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1918 / 178.19
Evaporative Heating Surface/Cylinder Volume250.47
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4032
Same as above plus superheater percentage4032
Same as above but substitute firebox area for grate area27,000
Power L15853
Power MT403.24

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