Poitevent & Favre Company 2-6-2 "Prairie" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 14145)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 48, p. 249. Works number was 40732 in October 1913.

As the P & F set up its new sawmill in Mandeville, La, it bought some new locomotives. Two of them were the double-ended four-coupleds shown in Locobase 14302. The 3, which was ordered between the two smaller engines, weighed almost twice as much and clearly was the major motive power on the logging road.

Like the others, the 3 lost its home in 1924 and wound up on the Hammond Lumber Company of Oak View, Wash.

Principal Dimensions by Steve Llanso of Sweat House Media
Class3
Locobase ID14,145
RailroadPoitevent & Favre Company
CountryUSA
Whyte2-6-2
Number in Class1
Road Numbers3
GaugeStd
Number Built1
BuilderBaldwin
Year1913
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)10.25 / 3.12
Engine Wheelbase (ft / m)26.83 / 8.18
Ratio of driving wheelbase to overall engine wheebase 0.38
Overall Wheelbase (engine & tender) (ft / m)48.43 / 14.76
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)93,600 / 42,456
Engine Weight (lbs / kg)120,500 / 54,658
Tender Loaded Weight (lbs / kg)80,000 / 36,287
Total Engine and Tender Weight (lbs / kg)200,500 / 90,945
Tender Water Capacity (gals / ML)4000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)10 / 9.10
Minimum weight of rail (calculated) (lb/yd / kg/m)52 / 26
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)50 / 1270
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)23,795 / 10793.24
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.93
Heating Ability
Firebox Area (sq ft / m2)124 / 11.52
Grate Area (sq ft / m2)18.20 / 1.69
Evaporative Heating Surface (sq ft / m2)1555 / 144.46
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1555 / 144.46
Evaporative Heating Surface/Cylinder Volume219.99
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3276
Same as above plus superheater percentage3276
Same as above but substitute firebox area for grate area22,320
Power L14615
Power MT326.10