Data from DeGolyer, Volume 77, pp. 612+. Works numbers for the AT&Ns were 60340-60341 in January 1928 and 60704 in January 1929. (Thanks to Chris Hohl for his 7 March 2016 email correcting the tender weights and capacities.) For AT&N history, see [] and
Principal Dimensions by Steve Llanso of Sweat House Media | |
---|---|
Class | 401 |
Locobase ID | 11371 |
Railroad | Alabama, Tennessee & Northern |
Country | USA |
Whyte | 2-10-0 |
Number in Class | 3 |
Road Numbers | 401-403 |
Gauge | Std |
Number Built | 3 |
Builder | Baldwin |
Year | 1928 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 19.67 / 6 |
Engine Wheelbase (ft / m) | 28.25 / 8.61 |
Ratio of driving wheelbase to overall engine wheelbase | 0.70 |
Overall Wheelbase (engine & tender) (ft / m) | 60.59 / 18.47 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 38,000 / 17,237 |
Weight on Drivers (lbs / kg) | 190,000 / 86,183 |
Engine Weight (lbs / kg) | 213,000 / 96,162 |
Tender Loaded Weight (lbs / kg) | 137,500 / 64,183 |
Total Engine and Tender Weight (lbs / kg) | 350,500 / 160,345 |
Tender Water Capacity (gals / ML) | 7000 / 26.52 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 10 / 11 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 63 / 31.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 56 / 1422 |
Boiler Pressure (psi / kPa) | 200 / 13.10 |
High Pressure Cylinders (dia x stroke) (in / mm) | 24" x 28" / 610x711 |
Tractive Effort (lbs / kg) | 48,960 / 22207.91 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.88 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 167 - 2" / 57 |
Flues (number - dia) (in / mm) | 28 - 5.375" / 137 |
Flue/Tube length (ft / m) | 17 / 5.18 |
Firebox Area (sq ft / m2) | 197 / 18.31 |
Grate Area (sq ft / m2) | 54.30 / 5.05 |
Evaporative Heating Surface (sq ft / m2) | 2343 / 217.75 |
Superheating Surface (sq ft / m2) | 553 / 51.39 |
Combined Heating Surface (sq ft / m2) | 2896 / 269.14 |
Evaporative Heating Surface/Cylinder Volume | 159.82 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 10,860 |
Same as above plus superheater percentage | 12,923 |
Same as above but substitute firebox area for grate area | 46,886 |
Power L1 | 10,575 |
Power MT | 613.52 |