Data from Baldwin Locomotive Works Negative 13269 offered for sale with views, last accessed 12 February 2012. Baldwin built the first 10 (works numbers were 73227-73235 in 1946) and Alco-Schenectady completed the order in 1947.
Of the thousands of Decapods that were ordered by the Russian government and the Soviet government 25 years later, this set of 20 was diverted to Finland in 1946-1947 as US-Soviet relations deteriorated. A noticeable detail difference was the provision of a larger sandbox than those typically found on Soviet engines.
Known as "Trumans", the class served the VR for 25 years. They were powerful, low-speed engines that were rated at 65 km/h (40 mph)
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Tr2 |
| Locobase ID | 13858 |
| Railroad | Finnish State |
| Country | Finland |
| Whyte | 2-10-0 |
| Number in Class | 20 |
| Road Numbers | 1300-1319 |
| Gauge | 5' |
| Number Built | 20 |
| Builder | several |
| Year | 1946 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 18.67 / 5.69 |
| Engine Wheelbase (ft / m) | 27.83 / 8.48 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.67 |
| Overall Wheelbase (engine & tender) (ft / m) | 61.37 / 18.71 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 38,500 / 17,463 |
| Weight on Drivers (lbs / kg) | 192,500 / 87,317 |
| Engine Weight (lbs / kg) | 219,000 / 99,337 |
| Tender Loaded Weight (lbs / kg) | 149,000 / 67,585 |
| Total Engine and Tender Weight (lbs / kg) | 368,000 / 166,922 |
| Tender Water Capacity (gals / ML) | 7400 / 28.03 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 14.30 / 13 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 64 / 32 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 52 / 1321 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 25" x 28" / 635x711 |
| Tractive Effort (lbs / kg) | 51,490 / 23355.50 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.74 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 162 - 2" / 51 |
| Flues (number - dia) (in / mm) | 35 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 16.75 / 5.11 |
| Firebox Area (sq ft / m2) | 227 / 21.09 |
| Grate Area (sq ft / m2) | 64.60 / 6 |
| Evaporative Heating Surface (sq ft / m2) | 2467 / 229.19 |
| Superheating Surface (sq ft / m2) | 685 / 63.64 |
| Combined Heating Surface (sq ft / m2) | 3152 / 292.83 |
| Evaporative Heating Surface/Cylinder Volume | 155.08 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 11,628 |
| Same as above plus superheater percentage | 14,186 |
| Same as above but substitute firebox area for grate area | 49,849 |
| Power L1 | 9578 |
| Power MT | 548.46 |