Southern Railway (USA) class Ts
More and more steel cars in the Southern Railway stock around World War I meant that the existing Pacifics were not powerful enough for all lines. This was especially true for lines like that between Washington, D.C. and Atlanta, Georgia that was relatively hilly. This is why the Southern ordered class Ts Mountains from Baldwin.
In 1917, 23 were directly delivered to the Southern. Seven more went to its subsidiaries, to be precisely five to the Cincinnati, New Orleans and Texas Pacific and two to the Alabama Great Southern. Like the Ps-4, they got an apple green and gold livery in the twenties. Soon they were complemented by 33 USRA Light Mountains, which were called class Ts-1. After their retirement in the early fifties, all Ts and Ts-1 were scrapped.
Technical data
General
- Built
- 1917
- Manufacturers
- Baldwin
- Wheel arrangement
- 4-8-2 (Mountain)
- Gauge
- 1,435 mm (Standard gauge)
Dimensions and weights
- Wheelbase
- 11.86 m
- Total wheelbase
- 22.34 m
- Service mass
- 142.8 t
- Adhesion mass
- 95.2 t
- Total mass
- 220.4 t
- Rigid wheelbase
- 5.49 m
- Axle load
- 24.9 t
- Water capacity
- 34,069 l
- Fuel capacity
- 10.9 t (coal)
Boiler
- Grate area
- 7.154 m²
- Firebox surface
- 30.565 m²
- Tube heating surface
- 310.204 m²
- Evaporative heating surface
- 340.769 m²
- Superheater surface
- 87.515 m²
- Total heating surface
- 428.3 m²
Power plant
- Driver diameter
- 1,753 mm
- Boiler pressure
- 13.8 bar
- Expansion type
- simple expansion
- Cylinders
- two, 686 x 711 mm
Power
- Power source
- steam
- Estimated power
- 2,424 kW (3,296 PS)
- Starting effort
- 223.7 kN
Calculated values
- Factor of adhesion
- 1 : 4.17
- Optimal speed
- 66 km/h
- Power-to-weight ratio
- 17.0 kW/t
- Heating Surface Equivalent
- 668.6 m²
- Cylinder volume/HSE
- 1 : 785.82
- Adhesive weight/Total
- 1 : 1.50
- Tractive force/Heating surface
- 1 : 10.91
- Grate area/Heating surface
- 1 : 59.87
- Firebox/Tube surface
- 1 : 10.15
- Total/Superheater
- 1 : 3.89
