Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 32, p. 251. See Locobase 12731 for short history of the Eastman Gardiner company. Works number was 36504 in May 1911.
Although Eastman Gardiner specified that as many parts as possible be interchangeable with the 4-6-0 they had bought in 1908 (Locobase 13474), they clearly sought more power. Baldwin responded with a Twelve-wheeler that was of the largest to be built for use on a North American railroad. Compared to the 63, the 67 had a longer wheelbase that accommodated a larger boiler stuffed with more tubes. Moreover, this larger vessel served a larger cylinder volume which was supplied through slide valves actuated by outside radial valve gear. The L & TW had a main line with a maximum curve of 8 degrees, a max gradient of 1 3/4%, and rails weighing 60-lb/yard (30-kg/metre).
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 67 |
| Locobase ID | 13475 |
| Railroad | Laurel & Tullahoma Western |
| Country | USA |
| Whyte | 4-8-0 |
| Number in Class | 1 |
| Road Numbers | 67 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1911 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 16 / 4.88 |
| Engine Wheelbase (ft / m) | 26 / 7.92 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.62 |
| Overall Wheelbase (engine & tender) (ft / m) | 56.87 / 17.33 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 153,000 / 69,400 |
| Engine Weight (lbs / kg) | 187,000 / 84,822 |
| Tender Loaded Weight (lbs / kg) | 110,000 / 49,895 |
| Total Engine and Tender Weight (lbs / kg) | 297,000 / 134,717 |
| Tender Water Capacity (gals / ML) | 5500 / 20.83 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 10.50 / 10 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 64 / 32 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 56 / 1422 |
| Boiler Pressure (psi / kPa) | 200 / 1380 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 22" x 26" / 559x660 |
| Tractive Effort (lbs / kg) | 38,201 / 17327.70 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.01 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 400 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 15 / 4.57 |
| Firebox Area (sq ft / m2) | 200 / 18.58 |
| Grate Area (sq ft / m2) | 33.40 / 3.10 |
| Evaporative Heating Surface (sq ft / m2) | 3324 / 308.81 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 3324 / 308.81 |
| Evaporative Heating Surface/Cylinder Volume | 290.56 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 6680 |
| Same as above plus superheater percentage | 6680 |
| Same as above but substitute firebox area for grate area | 40,000 |
| Power L1 | 7055 |
| Power MT | 406.63 |