Data and information from Reder (1974, p. 207); additional data from the table presented on pages 370, 372 of the Groupe VI. - Genie civil. - Moyens de transport. DeuxiFme partie. Classes 32 (Tome I), part of the series of Rapports du Jury Internationale of the Exposition Unverselle Internationale de 1900 Paris Exposition, hosted on the website of Le Conservatoire numTrique des Arts & MTtiers ([], Accessed 21 August 2005); and Gustav Reder, The World of Steam Locomotives ( ), p. .. See also "Exposition de 1900 -- Le Locomotives a l'Exposition de 1900, Locomotive a grande vitesse - compound - tandem ...", Le Genie Civil, Volume XXXVIII, No 6, Whole no 965 (8 December 1900), pp. 85-89; and "Locomotives For Russian State Railways", Engineering, Volume 70 (9 November 1900), pp. 597, 602.
These were tandem compounds, the LP cylinders set up behind the HP and were very similar to the Hungarian Category 1es. All four were served by piston valves. Unlike the Hungarian engines, however, the Ps had two large, cylindrical steam domes that flanked a small sand dome. Putilov rated the engines as capable of pulling a passenger train of 200 tons up a 1 in 125 (0.8%) grade at 20 mph (32 kph).
Photographs in the Genie Civil report of 8 December 1900 show a white engine with lineaments outlining every connection. Such detailing chopped up the profile and emphasized the awkward proportions of large domes, HP and LP cylinders, and broad, roughly made plate frame segments.
The class served the St Petersburg-Warsaw run as well as the Trans-Siberian.
Reder adds:"They really brought to a close the use of 4-4-0 engines in Russia ...As in Italy, the 2-6-0 was preferred because of its higher adhesion weight -- a factor that mattered more in Russia owing to snow and ice than to sharp inclines."
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | Series P (R) |
Locobase ID | 1474 |
Railroad | Russian State |
Country | Russia |
Whyte | 4-4-0 |
Number in Class | 67 |
Road Numbers | |
Gauge | 5' |
Number Built | 67 |
Builder | Putilov |
Year | 1898 |
Valve Gear | Heusinger |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 9.84 / 3 |
Engine Wheelbase (ft / m) | 24.61 / 7.50 |
Ratio of driving wheelbase to overall engine wheelbase | 0.40 |
Overall Wheelbase (engine & tender) (ft / m) | 33.76 / 10.29 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 33,069 / 15,000 |
Weight on Drivers (lbs / kg) | 66,139 / 30,000 |
Engine Weight (lbs / kg) | 124,561 / 56,500 |
Tender Loaded Weight (lbs / kg) | 77,162 / 35,000 |
Total Engine and Tender Weight (lbs / kg) | 201,723 / 91,500 |
Tender Water Capacity (gals / ML) | |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 5.50 / 5 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 55 / 27.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 78.70 / 2000 |
Boiler Pressure (psi / kPa) | 174 / 1200 |
High Pressure Cylinders (dia x stroke) (in / mm) | 14.37" x 24.02" / 365x610 |
Low Pressure Cylinders (dia x stroke) (in / mm) | 21.54" x 24.02" / 547x610 |
Tractive Effort (lbs / kg) | 12,901 / 5851.80 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.13 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 216 - 1.969" / 50 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 12.86 / 3.92 |
Firebox Area (sq ft / m2) | 147.47 / 13.70 |
Grate Area (sq ft / m2) | 27.99 / 2.60 |
Evaporative Heating Surface (sq ft / m2) | 1573 / 146.18 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 1573 / 146.18 |
Evaporative Heating Surface/Cylinder Volume | 348.87 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 4870 |
Same as above plus superheater percentage | 4870 |
Same as above but substitute firebox area for grate area | 25,660 |
Power L1 | 5205 |
Power MT | 347.00 |