Louisiana & Arkansas 2-8-0 "Consolidation" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 201 (Locobase 16006)

Data from Louisiana & Arkansas 1 - 1941 Locomotive Diagrams supplied in August 2013 by Allen Stanley from his extensive Rail Data Exchange.

Originally delivered to the Colorado Midland as Vauclain compounds (Locobase 12470), this class of Consolidations was converted to simple expansion in 1908. Locobase cannot say when the 201s were superheated, so the date given is an estimate. The superheater heating surface area is an estimate as that figure doesn't appear in the diagram. It is based on other Consolidations of similar vintage with identical flue counts, diameters, and lengths.

After the CM closed in 1918, the quintet went to the Louisiana & Arkansas, taking numbers 429, 425-428.

All but 425 were scrapped in 1933-1934. For some reason the 425 wasn't discarded until February 1949, when it was sold to the Comite Southern, a recently formed industrial line connecting a gravel pit to the docks. 425 was scrapped in 1951.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID16,006
RailroadLouisiana & Arkansas
Number in Class5
Road Numbers429, 425-539
Number Built
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)15.75 / 4.80
Engine Wheelbase (ft / m)24.33 / 7.42
Ratio of driving wheelbase to overall engine wheebase 0.65
Overall Wheelbase (engine & tender) (ft / m)59.98 / 18.28
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)159,000 / 72,121
Engine Weight (lbs / kg)182,000 / 82,554
Tender Loaded Weight (lbs / kg)136,000 / 61,689
Total Engine and Tender Weight (lbs / kg)318,000 / 144,243
Tender Water Capacity (gals / ML)6000 / 22.73
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)66 / 33
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)60 / 1524
Boiler Pressure (psi / kPa)200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)21" x 30" / 533x762
Tractive Effort (lbs / kg)37,485 / 17002.93
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.24
Heating Ability
Firebox Area (sq ft / m2)172.20 / 16
Grate Area (sq ft / m2)35 / 3.25
Evaporative Heating Surface (sq ft / m2)2181 / 202.62
Superheating Surface (sq ft / m2)366
Combined Heating Surface (sq ft / m2)2547 / 202.62
Evaporative Heating Surface/Cylinder Volume181.35
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation7000
Same as above plus superheater percentage7980
Same as above but substitute firebox area for grate area39,262
Power L110,537
Power MT584.40

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