Alabama, Tennessee & Northern 2-8-0 "Consolidation" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 201 (Locobase 13911)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 41, p. 126. Works number was 38477 in October 1912.

Suited to the 60-75 lb/yard (30-37.5 kg/metre) rail of this short line, the 201 was the only Baldwin Consolidation on the roster.


Class 202 (Locobase 14991)

Data from Negative Order No.1025, "Class 280-161" , Lima Locomotive Works, Incorporated datacard supplied by Chris Hohl in his 19 February 2024 email; and Roy V Wright (Ed.) 1922 Locomotive Cyclopedia of American Practice, Sixth Edition (New York: Simmons-Boardman Publishing Company, 1922), p. 123. See also the AT&N entry at Mississippi Rails, last accessed at [link] on 9 March 2013. Works numbers were 5929 and 5984 in May 1920.

In his 2013 comments, Locobase speculated that AT&N 204-205, 250 (Lima 6239-6240 in January 1922 and 6958 in October 1925) were at least blood relatives, if not exact duplicates. Chris Hohl sent Locobase a Lima datacard for engine 204 and convincingly argued the case for using its data for all five locomotives.

For some reason, Lima's price for the 202 was $24,273 while the 203 cost $27,635. The 202 and 250 went on the block in November 1944 where locomotive reseller Railway Accessories Company of Cincinnati bought them. Inn March 1945, RAC found a buyer in the Frankfort & Cincinnati of Frankfort, Ky, which gave them road numbers 15-16..

203 served the Gulf Shipbuilding Corporation in Chickasaw, Ala in the early 1940s before being sold to the Masonite Corporation in Laurel, Miss as their 100 on 14 December 1942.

204 was sold in the East Tennessee & Western North Carolina, who retained the road number. She went to the scrapper in 1955.

205 went to Crossett, Ark's Crossett Lumber Company as their #14.

Principal Dimensions by Steve Llanso of Middle Run Media
Class201202
Locobase ID13911 14991
RailroadAlabama, Tennessee & NorthernAlabama, Tennessee & Northern
CountryUSAUSA
Whyte2-8-02-8-0
Number in Class15
Road Numbers201202-205, 250
GaugeStdStd
Number Built15
BuilderBaldwinLima
Year19121920
Valve GearWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)15 / 4.5713.67 / 4.17
Engine Wheelbase (ft / m)23.58 / 7.1921.67 / 6.61
Ratio of driving wheelbase to overall engine wheelbase 0.64 0.63
Overall Wheelbase (engine & tender) (ft / m)53.31 / 16.25
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)133,000 / 60,328143,500 / 65,091
Engine Weight (lbs / kg)148,000 / 67,132160,500 / 72,802
Tender Loaded Weight (lbs / kg)100,000 / 45,359113,230 / 51,360
Total Engine and Tender Weight (lbs / kg)248,000 / 112,491273,730 / 124,162
Tender Water Capacity (gals / ML)5000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)8 / 7
Minimum weight of rail (calculated) (lb/yd / kg/m)55 / 27.5060 / 30
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)56 / 142246 / 1168
Boiler Pressure (psi / kPa)180 / 1240200 / 1380
High Pressure Cylinders (dia x stroke) (in / mm)20" x 26" / 508x66020" x 24" / 508x610
Tractive Effort (lbs / kg)28,414 / 12888.3935,478 / 16092.57
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.68 4.04
Heating Ability
Tubes (number - dia) (in / mm)275 - 2" / 51291 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)13.83 / 4.2213 / 3.96
Firebox Area (sq ft / m2)153 / 14.21140 / 13.01
Grate Area (sq ft / m2)31.50 / 2.9337.50 / 3.48
Evaporative Heating Surface (sq ft / m2)2133 / 198.162108 / 195.84
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)2133 / 198.162108 / 195.84
Evaporative Heating Surface/Cylinder Volume225.71241.47
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation56707500
Same as above plus superheater percentage56707500
Same as above but substitute firebox area for grate area27,54028,000
Power L151524932
Power MT341.60303.09

Photos

  • 202 (Theodore Gay Photo, YesterYearDepot)
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