New Orleans, Texas & Mexico 2-8-0 "Consolidation" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class C-55 - 35.3 (Locobase 7767)

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.

After these engines were taken into the Missouri Pacific in 1924, several were fitted with 2 Nicholson thermic syphons that contributed 54 sq ft to the locomotive's direct heating surface.

Principal Dimensions by Steve Llanso of Sweat House Media
ClassC-55 - 35.3
Locobase ID7767
RailroadNew Orleans, Texas & Mexico (NOT & M/MP)
CountryUSA
Whyte2-8-0
Number in Class10
Road Numbers101-110 / 1031-1040
GaugeStd
Number Built10
BuilderBurnham, Williams & Co
Year1907
Valve GearWalschaert
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 wheebase 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 / ML/MT)2300 / 8.70
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 / 12.80
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
Firebox Area (sq ft / m2)210 / 19.52
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 Volume191.01
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation8621
Same as above plus superheater percentage10,087
Same as above but substitute firebox area for grate area45,455
Power L110,822
Power MT585.30