Data from Alfred W Bruce, The Steam Locomotive in America - Its development in the twentieth century (New York: W W Norton, 1952), p. 368.
Five of this arrangement (and five 2-10-2s by Baldwin) were built for the Soviet Union. Compared to the Baldwins, these Alcos pressed harder and had a bigger evaporative surface area. Both had impressive superheat ratios. See the Baldwin entry at Locobase 728 for a discussion of Soviet intent.
Principal Dimensions by Steve Llanso of Sweat House Media | |
|---|---|
| Class | T |
| Locobase ID | 730 |
| Railroad | Soviet State |
| Country | Soviet Union |
| Whyte | 2-10-4 |
| Number in Class | 5 |
| Road Numbers | 10,000 |
| Gauge | 5' |
| Number Built | 5 |
| Builder | Alco |
| Year | 1931 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 21 / 6.40 |
| Engine Wheelbase (ft / m) | 41.17 / 12.55 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.51 |
| Overall Wheelbase (engine & tender) (ft / m) | 84.67 / 25.81 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 249,800 / 113,308 |
| Engine Weight (lbs / kg) | 365,200 / 165,652 |
| Tender Loaded Weight (lbs / kg) | 276,000 / 125,192 |
| Total Engine and Tender Weight (lbs / kg) | 641,200 / 290,844 |
| Tender Water Capacity (gals / ML) | 11,400 / 43.18 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 83 / 41.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 60 / 1524 |
| Boiler Pressure (psi / kPa) | 240 / 16.50 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 27.5" x 30" / 699x762 |
| Tractive Effort (lbs / kg) | 77,138 / 34989.25 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.24 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 19 / 5.79 |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 86 / 7.99 |
| Evaporative Heating Surface (sq ft / m2) | 4101 / 381.13 |
| Superheating Surface (sq ft / m2) | 1740 / 161.71 |
| Combined Heating Surface (sq ft / m2) | 5841 / 542.84 |
| Evaporative Heating Surface/Cylinder Volume | 198.85 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 20,640 |
| Same as above plus superheater percentage | 26,832 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |