Data from VGN 8 - 1951 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. 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" (229 mm) 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.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | TA |
| Locobase ID | 7485 |
| Railroad | Virginian (VGN) |
| Country | USA |
| Whyte | 4-6-0 |
| Number in Class | 6 |
| Road Numbers | 200-203 |
| Gauge | Std |
| Number Built | |
| Builder | Virginian |
| Year | 1906 |
| Valve Gear | Southern |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 13.50 / 4.11 |
| Engine Wheelbase (ft / m) | 24.58 / 7.49 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.55 |
| Overall Wheelbase (engine & tender) (ft / m) | 57.79 / 17.61 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 51,600 / 23,405 |
| Weight on Drivers (lbs / kg) | 147,300 / 66,814 |
| Engine Weight (lbs / kg) | 198,800 / 90,174 |
| Tender Loaded Weight (lbs / kg) | 147,480 / 66,896 |
| Total Engine and Tender Weight (lbs / kg) | 346,280 / 157,070 |
| Tender Water Capacity (gals / ML) | 7000 / 26.52 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 12 / 11 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 82 / 41 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 63 / 1600 |
| Boiler Pressure (psi / kPa) | 200 / 1380 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 21.5" x 26" / 546x660 |
| Tractive Effort (lbs / kg) | 32,431 / 14710.47 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.54 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 215 - 2" / 51 |
| Flues (number - dia) (in / mm) | 30 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 14.33 / 4.37 |
| Firebox Area (sq ft / m2) | 190.30 / 17.69 |
| Grate Area (sq ft / m2) | 56.20 / 5.22 |
| Evaporative Heating Surface (sq ft / m2) | 2392 / 222.30 |
| Superheating Surface (sq ft / m2) | 470 / 43.68 |
| Combined Heating Surface (sq ft / m2) | 2862 / 265.98 |
| Evaporative Heating Surface/Cylinder Volume | 218.85 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 11,240 |
| Same as above plus superheater percentage | 13,038 |
| Same as above but substitute firebox area for grate area | 44,150 |
| Power L1 | 14,551 |
| Power MT | 653.35 |