Thornton & Alexandria 2-8-0 "Consolidation" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 6 (Locobase 13912)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 41, p. 142. See also "Thornton (Calhoun County)" in the Encyclopedia of Arkansas at [], last accessed 1 March 2012. Works number was 37174 in November 1911.

Small and light-footed this Consolidation had to be as rail weights of 35, 40, and 60 lb/yard (17.5, 20, and 30 kg/metre) were the norm on this Arkansas short line. William M and Angelina W Stout owned both the railroad and the Stout-Greer Lumber Company for which it was built beginning in 1904. The main line ran 22.6 miles from Thornton to Hampton. The Encyclopedia of Arkansas claims that Stout-Greer was unique (although it does not say within what universe this was true) " in that it employed numerous Mexican workers in addition to white and African-American workers."

According to Gene Connelly's Baldwin list, the 6 had a short career. It went to work for the Southern Lumber & Timber Company of Warren, Ark on their Black Bayou Railroad, but was dismantled in April 1922.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID13912
RailroadThornton & Alexandria
Number in Class1
Road Numbers6
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)12.25 / 3.73
Engine Wheelbase (ft / m)19.83 / 6.04
Ratio of driving wheelbase to overall engine wheelbase 0.62
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)86,000 / 39,009
Engine Weight (lbs / kg)100,000 / 45,359
Tender Loaded Weight (lbs / kg)80,000 / 36,287
Total Engine and Tender Weight (lbs / kg)180,000 / 81,646
Tender Water Capacity (gals / ML)4000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)6 / 6
Minimum weight of rail (calculated) (lb/yd / kg/m)36 / 18
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 1118
Boiler Pressure (psi / kPa)175 / 12.10
High Pressure Cylinders (dia x stroke) (in / mm)16" x 24" / 406x610
Tractive Effort (lbs / kg)20,771 / 9421.58
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.14
Heating Ability
Tubes (number - dia) (in / mm)166 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12.08 / 3.68
Firebox Area (sq ft / m2)104 / 9.66
Grate Area (sq ft / m2)19.80 / 1.84
Evaporative Heating Surface (sq ft / m2)1147 / 106.56
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1147 / 106.56
Evaporative Heating Surface/Cylinder Volume205.19
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3465
Same as above plus superheater percentage3465
Same as above but substitute firebox area for grate area18,200
Power L13827
Power MT392.42

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