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.
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 [] 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 | ||
---|---|---|
Class | 201 | 202 |
Locobase ID | 13911 | 14991 |
Railroad | Alabama, Tennessee & Northern | Alabama, Tennessee & Northern |
Country | USA | USA |
Whyte | 2-8-0 | 2-8-0 |
Number in Class | 1 | 5 |
Road Numbers | 201 | 202-205, 250 |
Gauge | Std | Std |
Number Built | 1 | 5 |
Builder | Baldwin | Lima |
Year | 1912 | 1920 |
Valve Gear | Walschaert | Walschaert |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 15 / 4.57 | 13.67 / 4.17 |
Engine Wheelbase (ft / m) | 23.58 / 7.19 | 21.67 / 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 / 60,328 | 143,500 / 65,091 |
Engine Weight (lbs / kg) | 148,000 / 67,132 | 160,500 / 72,802 |
Tender Loaded Weight (lbs / kg) | 100,000 / 45,359 | 113,230 / 51,360 |
Total Engine and Tender Weight (lbs / kg) | 248,000 / 112,491 | 273,730 / 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 / 27.50 | 60 / 30 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 56 / 1422 | 46 / 1168 |
Boiler Pressure (psi / kPa) | 180 / 1240 | 200 / 1380 |
High Pressure Cylinders (dia x stroke) (in / mm) | 20" x 26" / 508x660 | 20" x 24" / 508x610 |
Tractive Effort (lbs / kg) | 28,414 / 12888.39 | 35,478 / 16092.57 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.68 | 4.04 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 275 - 2" / 51 | 291 - 2" / 51 |
Flues (number - dia) (in / mm) | ||
Flue/Tube length (ft / m) | 13.83 / 4.22 | 13 / 3.96 |
Firebox Area (sq ft / m2) | 153 / 14.21 | 140 / 13.01 |
Grate Area (sq ft / m2) | 31.50 / 2.93 | 37.50 / 3.48 |
Evaporative Heating Surface (sq ft / m2) | 2133 / 198.16 | 2108 / 195.84 |
Superheating Surface (sq ft / m2) | ||
Combined Heating Surface (sq ft / m2) | 2133 / 198.16 | 2108 / 195.84 |
Evaporative Heating Surface/Cylinder Volume | 225.71 | 241.47 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 5670 | 7500 |
Same as above plus superheater percentage | 5670 | 7500 |
Same as above but substitute firebox area for grate area | 27,540 | 28,000 |
Power L1 | 5152 | 4932 |
Power MT | 341.60 | 303.09 |