Fort Worth & Denver City 2-8-0 "Consolidation" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class B-4O (Locobase 1336)

Data from FW&DC 8 - 1942 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers included 27059, 25147-25153 in 1903.

Virtually identical to the Colorado & Southern's B-4Ps, but had smaller cylinder diameters and weighed slightly less. Gradually left service over a 26-year period from 1934 to 1960.

Class B-4R (Locobase 1338)

Identical to C&S's B-4R class, but built by Brooks. Five B-4R1 engines (1907) built by Richmond had slide valves instead of piston valves and sported other changes in the smokebox and cab. Works numbers included 40242-40251 from Alco-Brooks in July 1906 and 45570-45574 from Alco-Richmond in August 1908.

At least 5 were superheated (with a slight drop in boiler pressure from 205 psi) and fitted with 1" larger drivers; the data for that variant (taken from an April 1943 FW&D locomotive diagram) are used in the specs. The piston valves in this group measured 11" in diameter.

Fort Worth & Denver City began retiring this class in 1934, although the last B-4R1 lasted until 1960.

Specifications by Steve Llanso of Sweat House Media
Locobase ID1336 1338
RailroadFort Worth & Denver CityFort Worth & Denver City
Number in Class1215
Road Numbers201-211300-314
Number Built1215
BuilderRhode Islandseveral
Valve GearWalschaertStephenson
Locomotive Length and Weight
Driver Wheelbase15.50'15.33'
Engine Wheelbase24.17'23.67'
Ratio of driving wheelbase to overall engine wheebase 0.64 0.65
Overall Wheelbase (engine & tender)56.58'57.50'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers142000 lbs180795 lbs
Engine Weight158000 lbs200854 lbs
Tender Light Weight133250 lbs145500 lbs
Total Engine and Tender Weight291250 lbs346354 lbs
Tender Water Capacity6000 gals8000 gals
Tender Fuel Capacity (oil/coal)4100 gals2600 gals
Minimum weight of rail (calculated)59 lb/yard75 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter56"57"
Boiler Pressure188.50 psi200 psi
Cylinders (dia x stroke)20" x 28"22" x 28"
Tractive Effort32045 lbs40418 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.43 4.47
Heating Ability
Firebox Area187.70 sq. ft195 sq. ft
Grate Area41.30 sq. ft34.65 sq. ft
Evaporative Heating Surface1999 sq. ft2393 sq. ft
Superheating Surface508 sq. ft
Combined Heating Surface1999 sq. ft2901 sq. ft
Evaporative Heating Surface/Cylinder Volume196.34194.25
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation77856930
Same as above plus superheater percentage77858177
Same as above but substitute firebox area for grate area3538146020
Power L1507612246
Power MT315.23597.31


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