Data from NC&StL 6 - 1951 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See the quite detailed overview published by designer Alphonse I Lipetz, "Russian 'Decapod' Locomotives", The Railway Engineer, Volume 43, No 2 (February 1922), pp. 51-54; April 1922, pp. 136-137; July 1922, pp. 249-251; and November 1922, pp. 415-417.Alco's Richmond Works built the first three (works numbers 58846, 58869, 58870), Baldwin the last two (works numbers 48467 and 48521).
Part of the 200-locomotive residue of an order of Decapods for the 5-foot gauge railways in Russia, the lowest numbered two came directly from the USRA while the latter three originally were assigned to the Southern; on that system, their road numbers were 8013, 8031, and 8032.
The quintet served the N, C & St L on its Paducah, Ky and Huntsville, Ala branches for years. The assignments took advantage of the Decks' relatively low axle loading. As a result, they weren't scrapped until June 1950.
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | P1-51 |
Locobase ID | 8332 |
Railroad | Nashville, Chattanooga & St. Louis (NC&StL) |
Country | USA |
Whyte | 2-10-0 |
Number in Class | 5 |
Road Numbers | 950-954 |
Gauge | Std |
Number Built | 5 |
Builder | several |
Year | 1918 |
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) | 60.46 / 18.43 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 35,300 |
Weight on Drivers (lbs / kg) | 176,500 / 80,059 |
Engine Weight (lbs / kg) | 201,000 / 91,172 |
Tender Loaded Weight (lbs / kg) | 142,400 / 64,592 |
Total Engine and Tender Weight (lbs / kg) | 343,400 / 155,764 |
Tender Water Capacity (gals / ML) | 7400 / 28.03 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 14 / 13 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 59 / 29.50 |
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) | 3.43 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 194 - 2" / 51 |
Flues (number - dia) (in / mm) | 28 - 5.375" / 137 |
Flue/Tube length (ft / m) | 17 / 5.18 |
Firebox Area (sq ft / m2) | 227 / 21.10 |
Grate Area (sq ft / m2) | 64.60 / 6 |
Evaporative Heating Surface (sq ft / m2) | 2610 / 242.57 |
Superheating Surface (sq ft / m2) | 579 / 53.81 |
Combined Heating Surface (sq ft / m2) | 3189 / 296.38 |
Evaporative Heating Surface/Cylinder Volume | 164.05 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 11,628 |
Same as above plus superheater percentage | 13,721 |
Same as above but substitute firebox area for grate area | 48,215 |
Power L1 | 8781 |
Power MT | 548.41 |