Virginian 4-6-0 "Ten-wheeler" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class TA (Locobase 7485)

Data from VGN 8 - 1951 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 42996-42999 in June 1907.

This set of Ten-wheelers were built in a bunch in Richmond. Delivered as saturated steam engines with Stephenson valve gear, they were modified with Southern gear in 1919-1920; by then they had been fitted with relatively small 9" piston valves in the square-section steam chests that originally held slide valves. The profile had a pleasing assertiveness.

These engines were well-suited for mountain passenger service. As such, they survived into the late 1940s with 201-202 being retired in March 1949.

Specifications by Steve Llanso of Sweat House Media
Locobase ID7485
RailroadVirginian (VGN)
Number in Class6
Road Numbers200-203
Number Built6
Valve GearSouthern
Locomotive Length and Weight
Driver Wheelbase13.50'
Engine Wheelbase24.58'
Ratio of driving wheelbase to overall engine wheebase 0.55
Overall Wheelbase (engine & tender)57.79'
Axle Loading (Maximum Weight per Axle)51600 lbs
Weight on Drivers147300 lbs
Engine Weight198800 lbs
Tender Light Weight147480 lbs
Total Engine and Tender Weight346280 lbs
Tender Water Capacity7000 gals
Tender Fuel Capacity (oil/coal)12 tons
Minimum weight of rail (calculated)82 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter63"
Boiler Pressure200 psi
Cylinders (dia x stroke)21.5" x 26"
Tractive Effort32431 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.54
Heating Ability
Firebox Area190.30 sq. ft
Grate Area56.20 sq. ft
Evaporative Heating Surface2392 sq. ft
Superheating Surface470 sq. ft
Combined Heating Surface2862 sq. ft
Evaporative Heating Surface/Cylinder Volume218.94
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation11240
Same as above plus superheater percentage13038
Same as above but substitute firebox area for grate area44150
Power L114558
Power MT653.66

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