Locobase 431 describes the Pershing class of superheated Consolidations produced in the thousands by Baldwin as a standard class during and immediately after World War One.
Very few of these engines were delivered directly to US private railways, but once the great bulk of them had been delivered, this terminal switching line in Virginia ordered two. They were duplicates down to the 10" (254 mm) piston valves, although they trailed slightly larger tenders.
Chartered in March 1896 as the Southeastern & Atlantic, the N&PBL was formed in 1898 by a consortium of eight line-haul railroads to transfer freight throughout the port district over 12.1 miles of main track and 18.8 miles of yard track and sidings.
Both locomotives served the belt line until the end of its steam era and were scrapped in 1956.
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Norfolk & Portsmouth Belt Line|
|Number in Class||2|
|Locomotive Length and Weight|
|Ratio of driving wheelbase to overall engine wheebase||0.65|
|Overall Wheelbase (engine & tender)||56.58'|
|Axle Loading (Maximum Weight per Axle)|
|Weight on Drivers||151000 lbs|
|Engine Weight||169000 lbs|
|Tender Light Weight||120000 lbs|
|Total Engine and Tender Weight||289000 lbs|
|Tender Water Capacity||6000 gals|
|Tender Fuel Capacity (oil/coal)||8 tons|
|Minimum weight of rail (calculated)||63 lb/yard|
|Geometry Relating to Tractive Effort|
|Boiler Pressure||190 psi|
|Cylinders (dia x stroke)||21" x 28"|
|Tractive Effort||35611 lbs|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.24|
|Firebox Area||181 sq. ft|
|Grate Area||32.70 sq. ft|
|Evaporative Heating Surface||1862 sq. ft|
|Superheating Surface||420 sq. ft|
|Combined Heating Surface||2282 sq. ft|
|Evaporative Heating Surface/Cylinder Volume||165.88|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||6213|
|Same as above plus superheater percentage||7331|
|Same as above but substitute firebox area for grate area||40580|