This quartet of Moguls were very similar to the Brooks engines that arrived on the Wichita Falls Route in 1907 (Locobase 11402) although they had a 2-inch-longer stroke. When the Missouri-Kansas-Texas acquired all of the WF & NW's capital stock in 1912, it took possession of this class, dropped it into Class E, and renumbered the engines 900 to 903.
The WF&NW was founded to encourage more traffic through Wichita Falls from surrounding states. Its first charter (signed on 26 September 1906) envisioned a 17-mile line from Wichita Falls to the Red River. A second incorporation under the laws of the Oklahoma Territory envisioned a much larger network. Wichita Falls to Wellington, Texas (in the Panhandle) opened on 10 November 1910. Ultimately, the Wichita Falls Route included 359.3 miles (578 km) of track,climbing 1,500 ft (457 m) as it ran north from Wichita Falls, Tex to Beaver County, Okla.
The Missouri-Kansas-Texas Railroad leased the WF&NW on 1 May 1914 (after the Katy had acquired all of the latter's capital stock), but the smaller road operated independently until 1 April 1923 when it was consolidated with the MKT.
These two Moguls, then, formed part of the startup stud.
NB: The direct heating surface (including the firebox heating surface) is an estimate calculated by subtracting the calculated tube heating surface from the reported total evaporative heating surface.
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Wichita Falls & Northwestern||Wichita Falls & Northwestern|
|Number in Class||4||2|
|Road Numbers||15-18 / 900-903||2, 11/10-11/93-94|
|Locomotive Length and Weight|
|Driver Wheelbase (ft)||13|
|Engine Wheelbase (ft)||20.71|
|Ratio of driving wheelbase to overall engine wheebase||0.63|
|Overall Wheelbase (engine & tender) (ft)||47.54|
|Axle Loading (Maximum Weight per Axle) (lbs)|
|Weight on Drivers (lbs)||97,000||97,000|
|Engine Weight (lbs)||114,000||114,000|
|Tender Loaded Weight (lbs)||80,000|
|Total Engine and Tender Weight (lbs)||194,000|
|Tender Water Capacity (gals)||4000||4000|
|Tender Fuel Capacity (oil/coal) (gals/tons)||8|
|Minimum weight of rail (calculated) (lb/yd)||54||54|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in)||56||56|
|Boiler Pressure (psi)||180||180|
|High Pressure Cylinders (dia x stroke) (in)||18" x 26"||18" x 24"|
|Tractive Effort (lbs)||23,016||21,245|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.21||4.57|
|Firebox Area (sq ft)||135||134|
|Grate Area (sq ft)||22.40||23|
|Evaporative Heating Surface (sq ft)||1524||1530|
|Superheating Surface (sq ft)|
|Combined Heating Surface (sq ft)||1524||1530|
|Evaporative Heating Surface/Cylinder Volume||199.02||216.45|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||4032||4140|
|Same as above plus superheater percentage||4032||4140|
|Same as above but substitute firebox area for grate area||24,300||24,120|