City Point 4-2-0 "Jervis" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class C (Locobase 4833)

Loco Profile 11 (Brian Reed, 1971) says that this type, offered as part of a standard series of four 4-2-0 types in the late 1830s was the least widely sold. Of the 4 Norris types, these were by far the least powerful and can't have been satisfactory for very long.

Specifications by Steve Llanso of Sweat House Media
ClassC
Locobase ID4833
RailroadCity Point (Virginia)
CountryUSA
Whyte4-2-0
Number in Class2
Road Numbers
GaugeStd
Number Built2
BuilderNorris
Year1837
Valve Gear
Locomotive Length and Weight
Driver Wheelbase
Engine Wheelbase
Ratio of driving wheelbase to overall engine wheebase
Overall Wheelbase (engine & tender)
Axle Loading (Maximum Weight per Axle)
Weight on Drivers8022 lbs
Engine Weight15705 lbs
Tender Light Weight
Total Engine and Tender Weight
Tender Water Capacity
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)13 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter48"
Boiler Pressure100 psi
Cylinders (dia x stroke)9" x 18"
Tractive Effort2582 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.11
Heating Ability
Firebox Area29.29 sq. ft
Grate Area 6.37 sq. ft
Evaporative Heating Surface247 sq. ft
Superheating Surface
Combined Heating Surface247 sq. ft
Evaporative Heating Surface/Cylinder Volume186.36
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation637
Same as above plus superheater percentage637
Same as above but substitute firebox area for grate area2929
Power L12375
Power MT652.70


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