Longville Lumber 2-6-2 "Prairie" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 93 (Locobase 14935)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 65, p. 45. Works number was 54090 in November 1920.

Identical to the Calcasieu superheated logging Consolidation described in Locobase 14933 and owned by the same company, the 93 first operated in Longville, La. It later joined the Calcasieu #68 on the Longview, Portland & Northern. Unlike the 68, which was later sold to Mexico, the 93 was scrapped after 35 years' service by the LP&N.

Principal Dimensions by Steve Llanso of Sweat House Media
Class93
Locobase ID14,935
RailroadLongville Lumber
CountryUSA
Whyte2-6-2
Number in Class1
Road Numbers93
GaugeStd
Number Built1
BuilderBaldwin
Year1920
Valve GearWalschaert
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)50.50 / 15.39
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)101,000 / 45,813
Engine Weight (lbs / kg)130,000 / 58,967
Tender Loaded Weight (lbs / kg)90,000 / 40,823
Total Engine and Tender Weight (lbs / kg)220,000 / 99,790
Tender Water Capacity (gals / ML)4500 / 17.05
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)6 / 5.50
Minimum weight of rail (calculated) (lb/yd / kg/m)56 / 28
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)47 / 1194
Boiler Pressure (psi / kPa)200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)17" x 24" / 432x610
Tractive Effort (lbs / kg)25,088 / 11379.74
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.03
Heating Ability
Firebox Area (sq ft / m2)104 / 9.66
Grate Area (sq ft / m2)18.70 / 1.74
Evaporative Heating Surface (sq ft / m2)1438 / 133.59
Superheating Surface (sq ft / m2)344 / 31.96
Combined Heating Surface (sq ft / m2)1782 / 165.55
Evaporative Heating Surface/Cylinder Volume228.07
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3740
Same as above plus superheater percentage4451
Same as above but substitute firebox area for grate area24,752
Power L112,558
Power MT822.35

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