Cornwall 2-8-0 "Consolidation" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 15 (Locobase 15328)

Data from Mark Cain's, supplemented by DeGolyer, Vol 74, pp. 14+. Works number was 58468 in June 1925.

This superheated Consolidation provided a considerable amount of power for this 12-mile-long iron-ore railroad. Its design was a duplicate of a coal Consolidation produced for the Unity Railways (about 30 miles closer to Pittsburgh) and described in Locobase 15329. The 15's hot steam was conveyed to its cylinders through 12" (305 mm) piston valves. In a nod to one of its principal customers, the Cornwall specified Bethlehem "material" was to be used in the "plates, bars, bolts, rivets, boiler tubes, wheels, axles, and any other material of Bethlehem production wherever possible."

The 15, which shared a lot of detail components with the 14 (a 4-4-0 delivered a year earlier and described in Locobase 11795) was obviously a good fit as it remained in service for the rest of the CRR's years of steam. When the CRR turned to diesel power in 1950, the 15 was retired and later scrapped in 1951.

Specifications by Steve Llanso of Sweat House Media
Locobase ID15328
Number in Class1
Road Numbers15
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase14.50'
Engine Wheelbase23.83'
Ratio of driving wheelbase to overall engine wheebase 0.61
Overall Wheelbase (engine & tender)56.21'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers200000 lbs
Engine Weight218000 lbs
Tender Light Weight126000 lbs
Total Engine and Tender Weight344000 lbs
Tender Water Capacity6000 gals
Tender Fuel Capacity (oil/coal)10 tons
Minimum weight of rail (calculated)83 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter51"
Boiler Pressure200 psi
Cylinders (dia x stroke)23" x 28"
Tractive Effort49373 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.05
Heating Ability
Firebox Area222 sq. ft
Grate Area49.75 sq. ft
Evaporative Heating Surface2662 sq. ft
Superheating Surface608 sq. ft
Combined Heating Surface3270 sq. ft
Evaporative Heating Surface/Cylinder Volume197.71
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation9950
Same as above plus superheater percentage11841
Same as above but substitute firebox area for grate area52836
Power L111671
Power MT514.60

If you have any railroad data such as diagram books, rail station plans or anything else that you would be willing to share, please contact us.