See [] for the history, [] (a Ukrainian website organizing steam tours) for the data. Dzherelo says the information comes from Anthony J. Heywood & Jan D.C. Button, Soviet Locomotive Types: The Union Legacy (1995).
Most of these were built in Murom after World War II, but the switcher began production at Kolomna in 1936 (55) and continuing in 1939-41 (153). Also in 1941, Novocherkassk supplied a small number.
Known as Petushok (cockerel), the 9Ps were successful primarily in industrial-site shunting and some still operated in 1974, with the numbers dwindling throughout the next two decades.
Data from 1946 Beyer, Peacock catalogue hosted on Martyn Bane's website at [] (accessed 21 May 2006).
Batch #1412-1413 (works#6739-6758) (Production data from The Beyer, Peacock production list -- [], last accessed 29 May 2006).
These were large engines for their wheel arrangement, quite a bit bigger than any other six-coupled tanks. In addition the firebox heating surface comprised a relatively large percentage of overall evaporative heating surface and the superheat ratio was among the most generous of any British-built locomotive.
| Principal Dimensions by Steve Llanso of Middle Run Media | ||
|---|---|---|
| Class | 9P | unknown |
| Locobase ID | 5849 | 7571 |
| Railroad | Soviet State | Soviet State |
| Country | Soviet Union | Soviet Union |
| Whyte | 0-6-0T | 0-6-0T |
| Number in Class | 2688 | 20 |
| Road Numbers | 9P 0001-23538 | |
| Gauge | 5'6" | 5' |
| Number Built | 2688 | 20 |
| Builder | several | Beyer, Peacock |
| Year | 1936 | 1933 |
| Valve Gear | Walschaert | Walschaert |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | 8.86 / 2.70 | 9.84 / 3 |
| Engine Wheelbase (ft / m) | 8.86 / 2.70 | 9.84 / 3 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 9.84 / 3 | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 40,565 / 18,400 | 52,470 / 23,800 |
| Weight on Drivers (lbs / kg) | 121,695 / 55,200 | 154,323 / 70,000 |
| Engine Weight (lbs / kg) | 121,695 / 55,200 | 154,323 / 70,000 |
| Tender Loaded Weight (lbs / kg) | ||
| Total Engine and Tender Weight (lbs / kg) | ||
| Tender Water Capacity (gals / ML) | 1716 / 6.50 | 2160 / 8.18 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.80 / 3 | 3.40 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 68 / 34 | 86 / 43 |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 41.30 / 1050 | 47.20 / 1200 |
| Boiler Pressure (psi / kPa) | 188.50 / 1300 | 208.90 / 1440 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 19.69" x 19.69" / 500x500 | 21.65" x 23.62" / 550x600 |
| Tractive Effort (lbs / kg) | 29,615 / 13433.15 | 41,650 / 18892.14 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.11 | 3.71 |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | ||
| Flues (number - dia) (in / mm) | ||
| Flue/Tube length (ft / m) | ||
| Firebox Area (sq ft / m2) | 115.13 / 10.70 | |
| Grate Area (sq ft / m2) | 19.91 / 1.85 | 29.05 / 2.70 |
| Evaporative Heating Surface (sq ft / m2) | 985 / 91.56 | 1276 / 118.60 |
| Superheating Surface (sq ft / m2) | 419 / 38.90 | |
| Combined Heating Surface (sq ft / m2) | 985 / 91.56 | 1695 / 157.50 |
| Evaporative Heating Surface/Cylinder Volume | 141.95 | 126.79 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 3753 | 6069 |
| Same as above plus superheater percentage | 3753 | 7586 |
| Same as above but substitute firebox area for grate area | 30,063 | |
| Power L1 | 9181 | |
| Power MT | 393.47 | |