Tennessee, Alabama & Georgia 2-8-0 "Consolidation" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 100 (Locobase 15205)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 71, pp. 26+. Works number was 54065 in November 1920.

Although ultimately lettered for the TAG Route, this locomotive first took shape in response to an order from a Cuban company, the Central Guira sugar mill. For some reason, probably financial on the part of the CG, the locomotive went into the stockyard and waited for another buyer. One was found in May 1922 in the Chattanooga Traction Company, which bought this middle-sized Consolidation for the TA&G.

After all of that, the 100 served the TA&G for only nine years before being sold to locomotive rebuilder/reseller Georgia Car & Locomotive. GC&L found a buyer in South Carolina in the form of the Greenville & Northern, which numbered it 15 and operated it until until it was scrapped in 1952.


Class 101 (Locobase 14347)

Data from DeGolyer, Vol 71, pp.171+. See also the Arkansas Historic Preservation Program's listing of the 101 at http://www.arkansaspreservation.com/historic-properties/_search_nomination_popup.aspx?id=2383. Works number was 55644 in September 1922.

Baldwin's specs show that the 101 was destined to climb 2% grades and go around 20 degree curves.

After nine years on the TAG, locomotive rebuilder/reseller Georgia Car & Locomotive bought the 101 in 1931. GC&L sold the 101 to the Fordyce & Princeton of Fordyce, Ark, where it operated for another 17 years before being retired in 1948.

From April 1960, the 101 went on display at the Children's Museum in Little Rock. It was later sold privately to a location in Alexander, Ark, until the owner donated it to Fordyce in 2007.


Class 201 (Locobase 14348)

Data from DeGolyer, Vol 71, pp.171+. Works number was 57707 in March 1924.

This superheated Consolidation's firebox heating surface area included 46 sq ft (4.3 sq m) in two Nicholson thermic syphons .Cylinders were served their steam through 10" (254 mm) diameter piston valves. Locobase believes that using thermic syphons in so small a boiler and firebox at this early date is quite unusual. He also wonders if the TAG retained the syphon installation or removed it before selling the engine to the Chattahoochee Valley of West Point, Ga in 1936.

The CV later renumbered the engine as 21 and, after its service had ended, donated it in July 1961 to the National Railroad Historical Society. The NRHS put the engine on display at Duluth, Georgia's Gwinnett Railway Museum (now the Southeastern Railway Museum).

Principal Dimensions by Steve Llanso of Sweat House Media
Class100101201
Locobase ID15,205 14,347 14,348
RailroadTennessee, Alabama & Georgia (TAG)Tennessee, Alabama & Georgia (TAG)Tennessee, Alabama & Georgia (TAG)
CountryUSAUSAUSA
Whyte2-8-02-8-02-8-0
Number in Class111
Road Numbers100101201
GaugeStdStdStd
Number Built111
BuilderBaldwinBaldwinBaldwin
Year192019221924
Valve GearWalschaertWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)14.50 / 4.4214.50 / 4.4215.50 / 4.72
Engine Wheelbase (ft / m)22.75 / 6.9322 / 6.7123.50 / 7.16
Ratio of driving wheelbase to overall engine wheebase 0.64 0.66 0.66
Overall Wheelbase (engine & tender) (ft / m)51.62 / 15.7351.62 / 15.7352.30 / 15.94
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)120,600 / 54,703120,600 / 54,703132,000 / 59,874
Engine Weight (lbs / kg)133,600 / 60,600133,600 / 60,600147,000 / 66,678
Tender Loaded Weight (lbs / kg)100,000 / 45,359100,000 / 45,359100,000 / 45,359
Total Engine and Tender Weight (lbs / kg)233,600 / 105,959233,600 / 105,959247,000 / 112,037
Tender Water Capacity (gals / ML)5000 / 18.945000 / 18.945000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)10 / 9.1010 / 9.1010 / 9.10
Minimum weight of rail (calculated) (lb/yd / kg/m)50 / 2550 / 2555 / 27.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)50 / 127050 / 127050 / 1270
Boiler Pressure (psi / kPa)170 / 11.70170 / 11.70180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)20" x 24" / 508x61020" x 24" / 508x61020" x 26" / 508x660
Tractive Effort (lbs / kg)27,744 / 12584.4827,744 / 12584.4831,824 / 14435.14
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.35 4.35 4.15
Heating Ability
Firebox Area (sq ft / m2)144 / 13.38144 / 13.38167 / 15.51
Grate Area (sq ft / m2)30.30 / 2.8130.30 / 2.8137 / 3.44
Evaporative Heating Surface (sq ft / m2)1774 / 164.811774 / 164.811651 / 153.38
Superheating Surface (sq ft / m2)442 / 41.06
Combined Heating Surface (sq ft / m2)1774 / 164.811774 / 164.812093 / 194.44
Evaporative Heating Surface/Cylinder Volume203.29203.29174.64
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation515151516660
Same as above plus superheater percentage515151518059
Same as above but substitute firebox area for grate area24,48024,48036,373
Power L14049404910,256
Power MT296.07296.07685.17

Photos