National Tube Company 0-4-0 Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 20 (Locobase 14997)

Data from Roy V Wright (Ed.) 1922 Locomotive Cyclopedia of American Practice, Sixth Edition (New York: Simmons-Boardman Publishing Company, 1922), p. 1025. Works numbers were 5843 in June 1916, 5844-5845 in July.

Specifications by Steve Llanso of Sweat House Media
Locobase ID14997
RailroadNational Tube Company
Number in Class3
Road Numbers20-22
Number Built3
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase 5.75'
Engine Wheelbase 5.75'
Ratio of driving wheelbase to overall engine wheebase1
Overall Wheelbase (engine & tender) 5.75'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers96000 lbs
Engine Weight96000 lbs
Tender Light Weight
Total Engine and Tender Weight96000 lbs
Tender Water Capacity
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)80 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter42"
Boiler Pressure175 psi
Cylinders (dia x stroke)17" x 20"
Tractive Effort20471 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.69
Heating Ability
Firebox Area73 sq. ft
Grate Area18.75 sq. ft
Evaporative Heating Surface870 sq. ft
Superheating Surface
Combined Heating Surface870 sq. ft
Evaporative Heating Surface/Cylinder Volume165.58
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3281
Same as above plus superheater percentage3281
Same as above but substitute firebox area for grate area12775
Power L12879
Power MT132.23

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