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

Class Details by Steve Llanso of Sweat House Media

Class Powhatan/C (Locobase 4833)

Data from Loco Profile 11 (Brian Reed, 1971). Works numbers were 45 in 1838, 84 in 1839.

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 four Norris types, these were by far the least powerful might not be seen to have been satisfactory for very long. But Powhatan and Pocahontas survived to be included in City Point's renaming as the Appomattox Railroad in 1847.

Seven years later, the two engines changed heralds and widened their gauge to 5 feet to represent the South Side Railroad. By then, they were clearly obsolete and were shown as out of service by 1857.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID4833
RailroadCity Point (Virginia)
Number in Class2
Road Numbers
Number Built2
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)8022 / 3639
Engine Weight (lbs / kg)15,705 / 7124
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)13 / 6.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 1219
Boiler Pressure (psi / kPa)100 / 6.90
High Pressure Cylinders (dia x stroke) (in / mm)9" x 18" / 229x457
Tractive Effort (lbs / kg)2582 / 1171.18
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.11
Heating Ability
Tubes (number - dia) (in / mm)58 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)7 / 2.13
Firebox Area (sq ft / m2)29.29 / 2.72
Grate Area (sq ft / m2) 6.37 / 0.59
Evaporative Heating Surface (sq ft / m2)247 / 22.96
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)247 / 22.96
Evaporative Heating Surface/Cylinder Volume185.71
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 L12367
Power MT650.50

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Wes Barris