Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 16, p. 69. Works numbers were 10869-10870 in May 1890, 11113 in August, and 11806 in April 1891.
In 1910, the Tennessee, Alabama & Georgia emerged from yet another reorganization of the CS and renumbered the three engines 101-103. The TAG Route ran from Chattanooga through Georgia as far south as Gadsden, Alabama, 91.7 timetable miles away.
Locobase isn't sure about the numbering for the 5. It may have spent some time on the Chicago, Kansas City & Texas (later the Kansas City & Atlantic).
NB: Heating surface data is derived from comparison with the Kearney & Black Hills order (Locobase 11697) of the same year, which has identical firebox dimensions as well as identical tube counts, diameters, and length--as did several other orders such as the Windsor & Annapolis's Kentville (Locobase 15657) a year later.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 1 |
| Locobase ID | 12899 |
| Railroad | Chattanooga Southern / TAG |
| Country | USA |
| Whyte | 4-4-0 |
| Number in Class | 3 |
| Road Numbers | 1-3, 5 / 101-103 |
| Gauge | Std |
| Number Built | 3 |
| Builder | Burnham, Parry, Williams & Co |
| Year | 1890 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 8.25 / 2.51 |
| Engine Wheelbase (ft / m) | 22.17 / 6.76 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.37 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 50,000 / 22,680 |
| Engine Weight (lbs / kg) | 80,000 / 36,287 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2800 / 10.61 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 42 / 21 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 62 / 1575 |
| Boiler Pressure (psi / kPa) | 130 / 900 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 24" / 432x610 |
| Tractive Effort (lbs / kg) | 12,362 / 5607.32 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.04 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 188 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.92 / 3.33 |
| Firebox Area (sq ft / m2) | 121 / 11.25 |
| Grate Area (sq ft / m2) | 16.30 / 1.51 |
| Evaporative Heating Surface (sq ft / m2) | 1181 / 109.76 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1181 / 109.76 |
| Evaporative Heating Surface/Cylinder Volume | 187.16 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2119 |
| Same as above plus superheater percentage | 2119 |
| Same as above but substitute firebox area for grate area | 15,730 |
| Power L1 | 3802 |
| Power MT | 335.28 |