These Ten-wheelers were large, robust, saturated-steam engines when they arrived on the FW & DC as the lion's share of an order that included a pair of locomotives for the Colorado & Southern.
According to Drury (1993), they were superheated and fitted with Walschaert gear in 1919-1920, but the 1942 book shows no sign of such an upgrade. The C & S locomotives shown in Locobase 6755 are likely to be identical to the FW & DCs after the latter's reconfiguration.
These Virginians appear to have had the same general design as the Brooks locomotives shown in Locobase 9851. The boiler was less crowded, the grate a little smaller, but the firebox heating surface was about the same. Cylinder diameter grew by an inch, possibly to counterbalance the adoption of taller drivers.
According to Drury (1993), they were superheated and fitted with Walschaert gear in 1919-1920, but the 1942 book shows no sign of such an upgrade. The Colorado & Southern locomotives described in Locobase 6756 are most likely representative except that they had 67" drivers.
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Fort Worth & Denver City||Fort Worth & Denver City|
|Number in Class||6||2|
|Locomotive Length and Weight|
|Ratio of driving wheelbase to overall engine wheebase||0.57||0.57|
|Overall Wheelbase (engine & tender)||59.54'||61.25'|
|Axle Loading (Maximum Weight per Axle)|
|Weight on Drivers||141000 lbs||146500 lbs|
|Engine Weight||173775 lbs||187700 lbs|
|Tender Light Weight||156700 lbs||156700 lbs|
|Total Engine and Tender Weight||330475 lbs||344400 lbs|
|Tender Water Capacity||8000 gals||8000 gals|
|Tender Fuel Capacity (oil/coal)||3600 gals||3600 gals|
|Minimum weight of rail (calculated)||78 lb/yard||81 lb/yard|
|Geometry Relating to Tractive Effort|
|Boiler Pressure||200 psi||200 psi|
|Cylinders (dia x stroke)||20" x 28"||21" x 28"|
|Tractive Effort||28418 lbs||30423 lbs|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.96||4.82|
|Firebox Area||200.70 sq. ft||205 sq. ft|
|Grate Area||34.60 sq. ft||32.60 sq. ft|
|Evaporative Heating Surface||3074 sq. ft||2476 sq. ft|
|Combined Heating Surface||3074 sq. ft||2476 sq. ft|
|Evaporative Heating Surface/Cylinder Volume||301.93||220.59|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||6920||6520|
|Same as above plus superheater percentage||6920||6520|
|Same as above but substitute firebox area for grate area||40140||41000|