Wichita Falls & Northwestern 2-6-0 "Mogul" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 12 /E (Locobase 13323)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 32, p. 37 and Volume 34, p. 178. See Locobase 11402 for a history of the WF & NW. Works numbers were 33975-33976 in September 1909, and 34477-34478 in April 1910.

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.


Class 2/E (Locobase 11403)

Data from "Locomotive Building ", The Railroad Gazette, Vol XLIII, No 8 (23 August 1907), p. 214. Railroad information from the Handbook of Texas Online http://www.tshaonline.org/handbook/online/articles/WW/eqw10.html . See also Donald L Hofsommer, Katy Northwest: the story of a branch-line railroad (Bloomington, IN, 1976, reprinted by IUP in 1999). Works numbers were 44708-44709 in March 1908.

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
Class12 /E2/E
Locobase ID13,323 11,403
RailroadWichita Falls & NorthwesternWichita Falls & Northwestern
CountryUSAUSA
Whyte2-6-02-6-0
Number in Class42
Road Numbers15-18 / 900-9032, 11/10-11/93-94
GaugeStdStd
Number Built42
BuilderBaldwinAlco-Rhode Island
Year19091907
Valve GearStephensonStephenson
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)97,00097,000
Engine Weight (lbs)114,000114,000
Tender Loaded Weight (lbs)80,000
Total Engine and Tender Weight (lbs)194,000
Tender Water Capacity (gals)40004000
Tender Fuel Capacity (oil/coal) (gals/tons)8
Minimum weight of rail (calculated) (lb/yd)5454
Geometry Relating to Tractive Effort
Driver Diameter (in)5656
Boiler Pressure (psi)180180
High Pressure Cylinders (dia x stroke) (in)18" x 26"18" x 24"
Tractive Effort (lbs)23,01621,245
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.21 4.57
Heating Ability
Firebox Area (sq ft)135134
Grate Area (sq ft)22.4023
Evaporative Heating Surface (sq ft)15241530
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)15241530
Evaporative Heating Surface/Cylinder Volume199.02216.45
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation40324140
Same as above plus superheater percentage40324140
Same as above but substitute firebox area for grate area24,30024,120
Power L148245229
Power MT328.92356.53