Data from MP SUBS 7 - 1935 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 29624 in November 1906; 29688-29692, 29724, 29725, 29779-29780 in December.
Locobase 16546 shows the original 1906 class of 20 Consolidations delivered to the Saint Louis-San Francisco. Ten years later, the SL-SF sold half of the class to the NOT&M. Frisco road numbers were 971-975, 977-978, 982-983, 985.
The MP subsidiary superheated the class soon after they arrived. Then, after these engines were taken into the Missouri Pacific in 1924, several were fitted with two Nicholson thermic syphons that contributed 54 sq ft (5.02 sq m) to the locomotive's direct heating surface.
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | C-55 - 35.3 |
Locobase ID | 7767 |
Railroad | New Orleans, Texas & Mexico (NOT & M/MP) |
Country | USA |
Whyte | 2-8-0 |
Number in Class | 10 |
Road Numbers | 101-110/1031-1040 |
Gauge | Std |
Number Built | |
Builder | MP |
Year | 1917 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 14.33 / 4.37 |
Engine Wheelbase (ft / m) | 23.67 / 7.21 |
Ratio of driving wheelbase to overall engine wheelbase | 0.61 |
Overall Wheelbase (engine & tender) (ft / m) | 58.34 / 17.78 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 163,050 / 73,958 |
Engine Weight (lbs / kg) | 185,800 / 84,278 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | |
Tender Water Capacity (gals / ML) | 6000 / 22.73 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2300 / 8706 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 68 / 34 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 55 / 1397 |
Boiler Pressure (psi / kPa) | 185 / 1280 |
High Pressure Cylinders (dia x stroke) (in / mm) | 21" x 28" / 533x711 |
Tractive Effort (lbs / kg) | 35,304 / 16013.64 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.62 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 184 - 2" / 51 |
Flues (number - dia) (in / mm) | 30 - 5.375" / 137 |
Flue/Tube length (ft / m) | 14 / 4.27 |
Firebox Area (sq ft / m2) | 210 / 19.51 |
Grate Area (sq ft / m2) | 46.60 / 4.33 |
Evaporative Heating Surface (sq ft / m2) | 2144 / 199.26 |
Superheating Surface (sq ft / m2) | 441 / 40.99 |
Combined Heating Surface (sq ft / m2) | 2585 / 240.25 |
Evaporative Heating Surface/Cylinder Volume | 191.09 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 8621 |
Same as above plus superheater percentage | 10,087 |
Same as above but substitute firebox area for grate area | 45,455 |
Power L1 | 10,826 |
Power MT | 585.52 |