Southern 4-8-2 "Mountain" Type Locomotives

Class Ts (Locobase 227)

30 Ts were built by Baldwin in 1917. Like the Ps-4s, these engines received a striking apple green and gold paint job in the late 1920s that they retained for the rest of their operating life. These Mountains pulled passenger trains on the hilly Atlanta-Birmingham, Bristol-Memphis, and Macon-Chattanooga routes.

Prince (1965) and some data from Southern Railway diagrams hosted on southern.railfan.net/images/archive/southern/steam_loco_diagrams (viewed September 2002)..

Class Ts-1 (Locobase 1429)

Boiler had feedwater heater. Firebox heating surface includes 27 sq ft of arch tubes.

Standard light "Mountain" design as conceived for mass

production during World War I by the USRA. These 25 came from Baldwin and Alco-Richmond. Like the Ts and Ps-4 class passenger engines, Ts-1 locomotives were decked in an attractive apple green and gold paint scheme in the late 1920s that the Southern maintained right up to retirement in 1952-1953.

Specifications
ClassTsTs-1
Locobase ID2271429
RailroadSouthern (SRS)Southern (SRS)
Whyte4-8-24-8-2
Road Numbers1450-14721475-1488
GaugeStdStd
BuilderBaldwinSeveral
Year19171918
Valve GearWalschaertBaker
Locomotive Length and Weight
Driver Wheelbase18'18.25'
Engine Wheelbase38.92'40'
Ratio of driving wheelbase to overall engine wheebase 0.46 0.46
Overall Wheelbase (engine & tender)73.29'75.70'
Axle Loading (Maximum Weight per Axle)54900 lbs56500 lbs
Weight on Drivers209800 lbs224500 lbs
Engine Weight314800 lbs327000 lbs
Tender Light Weight171000 lbs192000 lbs
Total Engine and Tender Weight485800 lbs519000 lbs
Tender Water Capacity9000 gals10000 gals
Tender Fuel Capacity (oil/coal)12 tons16 tons
Minimum weight per yard of rail on which locomotive could run87.42 lb rail93.54 lb rail
Geometry Relating to Tractive Effort
Driver Diameter69"69"
Boiler Pressure200 psi200 psi
Cylinders (dia x stroke)27" x 28"27" x 30"
Tractive Effort50290 lbs53883 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.17 4.17
Heating Ability
Firebox Area303.43 sq. ft356 sq. ft
Grate Area77 sq. ft70.30 sq. ft
Evaporative Heating Surface36554121
Superheating Surface942966
Combined Heating Surface45975087
Evaporative Heating Surface/Cylinder Volume196.98207.29
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1540014060
Same as above plus superheater percentage18555.7116729.94
Same as above but substitute firebox area for grate area73121.5584720.58
Power L116920.1216885.23
Power MT711.20663.26

Credits

Introduction and specifications provided by Steve Llanso of Sweat House Media.