King Ryder Lumber Company 2-6-2 "Prairie" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 48 (Locobase 11009)

Data from "Logging Locomotives", Record of Recent Construction #96 (Baldwin Locomotive Works, 1918), p. 12-13; and DeGolyer, Vol 62, pp. 360+. Works number was 51941 in June 1919. See http://usgwarchives.net/la/calcasieu/block/bonami.htm for more information on Bon Ami.

Bon Ami, Louisiana was the headquarters of the KR Lumber Company which lumbered in southwestern La until the mid-1920s. This cabbage-stacker ran on wood, of which 3 1/2 cords filled the tender.

When the mill closed, the railroad did too and presumably the 48 went off to other work as well.

Principal Dimensions by Steve Llanso of Sweat House Media
Class48
Locobase ID11,009
RailroadKing Ryder Lumber Company
CountryUSA
Whyte2-6-2
Number in Class1
Road Numbers48
GaugeStd
Number Built1
BuilderBaldwin
Year1919
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.17 / 2.80
Engine Wheelbase (ft / m)23.75 / 7.24
Ratio of driving wheelbase to overall engine wheebase 0.39
Overall Wheelbase (engine & tender) (ft / m)47.94 / 14.61
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)62,000 / 28,123
Engine Weight (lbs / kg)84,000 / 38,102
Tender Loaded Weight (lbs / kg)80,000 / 36,287
Total Engine and Tender Weight (lbs / kg)164,000 / 74,389
Tender Water Capacity (gals / ML)4000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)34 / 17
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)46 / 1168
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)15" x 20" / 381x508
Tractive Effort (lbs / kg)14,967 / 6788.93
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.14
Heating Ability
Firebox Area (sq ft / m2)83 / 7.71
Grate Area (sq ft / m2)13.70 / 1.27
Evaporative Heating Surface (sq ft / m2)991 / 92.10
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)991 / 92.10
Evaporative Heating Surface/Cylinder Volume242.26
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2466
Same as above plus superheater percentage2466
Same as above but substitute firebox area for grate area14,940
Power L14743
Power MT505.96