Louisiana & Pine Bluff 2-8-2 "Mikado" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 11 (Locobase 11015)

Data from "Logging Locomotives", Record of Recent Construction #96 (Baldwin Locomotive Works, 1918), p. 28-29. See also DeGolyer, Vol 62, pp. 335+. Works number was 51922 in June 1919.

This locomotive was essentially identical to the East Oregon locomotive shown in Locobase 11014, but went to work on the Louisiana & Pine Bluff Railway, a Frost-Johnson subsidiary.

Specifications by Steve Llanso of Sweat House Media
Class11
Locobase ID11,015
RailroadLouisiana & Pine Bluff
CountryUSA
Whyte2-8-2
Number in Class1
Road Numbers11
GaugeStd
Number Built1
BuilderBaldwin
Year1919
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)12.08 / 3.68
Engine Wheelbase (ft / m)27.25 / 8.31
Ratio of driving wheelbase to overall engine wheebase 0.44
Overall Wheelbase (engine & tender) (ft / m)51.96 / 15.84
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)113,050 / 51,279
Engine Weight (lbs / kg)143,400 / 65,045
Tender Loaded Weight (lbs / kg)90,000 / 40,823
Total Engine and Tender Weight (lbs / kg)233,400 / 105,868
Tender Water Capacity (gals / ML)4500 / 17.05
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)2000 / 7.60
Minimum weight of rail (calculated) (lb/yd / kg/m)47 / 23.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 1118
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)27,039 / 12264.70
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.18
Heating Ability
Firebox Area (sq ft / m2)143 / 13.29
Grate Area (sq ft / m2)25.50 / 2.37
Evaporative Heating Surface (sq ft / m2)2111 / 196.19
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)2111 / 196.19
Evaporative Heating Surface/Cylinder Volume298.65
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4590
Same as above plus superheater percentage4590
Same as above but substitute firebox area for grate area25,740
Power L15277
Power MT411.63