Prescott & Northwestern 2-6-0 "Mogul" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 14 (Locobase 13322)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 32, p. 192. See also the Tap Line Cases summary of this railroad as described in 1914 at http://www.ttarchive.com/Library/Articles/TapLineCase_Prescott&Northwestern.html, last accessed 29 October 2011. Works number was 33159 in January 1909..

Arkansas timber invited new railroad construction and Prescott was established by Ozan Lumber Company as the southernmost terminus of a 31-mile connection with Highland with lines that ran out further into the woods. The Tap Line summary highlighted the how the road was "...substantially and permanently built, with 54 and 63 pound rail laid on gravel ballast" and that it had a substantial percentage of outside business.

The P & NW shipped forest products and cement as well as Elberta peaches from an 2,000-acre orchard established in 1910.

Years later (i.e., after 1940), the railroad sold the 14 to Meriwether Gravel of Lewisville, Ark.

Specifications by Steve Llanso of Sweat House Media
Class14
Locobase ID13,322
RailroadPrescott & Northwestern
CountryUSA
Whyte2-6-0
Number in Class1
Road Numbers14
GaugeStd
Number Built1
BuilderBurnham, Williams & Co
Year1909
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)12.50 / 3.81
Engine Wheelbase (ft / m)20 / 6.10
Ratio of driving wheelbase to overall engine wheebase 0.62
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)101,000 / 45,813
Engine Weight (lbs / kg)118,500 / 53,751
Tender Loaded Weight (lbs / kg)90,000 / 40,823
Total Engine and Tender Weight (lbs / kg)208,500 / 94,574
Tender Water Capacity (gals / ML)4500 / 17.05
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)48 / 1219
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)24,786 / 11242.75
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.07
Heating Ability
Firebox Area (sq ft / m2)111 / 10.31
Grate Area (sq ft / m2)20.50 / 1.90
Evaporative Heating Surface (sq ft / m2)1306 / 121.33
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1306 / 121.33
Evaporative Heating Surface/Cylinder Volume184.76
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3690
Same as above plus superheater percentage3690
Same as above but substitute firebox area for grate area19,980
Power L13791
Power MT248.25