New Orleans, Texas & Mexico 2-8-0 "Consolidation" Locomotives of 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 Raildata collection. 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.

Specifications by Steve Llanso of Sweat House Media
ClassC-55 - 35.3
Locobase ID7767
RailroadNew Orleans, Texas & Mexico (NOT & M/MP)
Number in Class10
Road Numbers101-110 / 1031-1040
Number Built10
BuilderBurnham, Williams & Co
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase14.33'
Engine Wheelbase23.67'
Ratio of driving wheelbase to overall engine wheebase 0.61
Overall Wheelbase (engine & tender)58.34'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers163050 lbs
Engine Weight185800 lbs
Tender Light Weight
Total Engine and Tender Weight
Tender Water Capacity6000 gals
Tender Fuel Capacity (oil/coal)2300 gals
Minimum weight of rail (calculated)68 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter55"
Boiler Pressure185 psi
Cylinders (dia x stroke)21" x 28"
Tractive Effort35304 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.62
Heating Ability
Firebox Area210 sq. ft
Grate Area46.60 sq. ft
Evaporative Heating Surface2144 sq. ft
Superheating Surface441 sq. ft
Combined Heating Surface2585 sq. ft
Evaporative Heating Surface/Cylinder Volume191.01
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation8621
Same as above plus superheater percentage10087
Same as above but substitute firebox area for grate area45455
Power L110822
Power MT585.30

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