Tuskegee 2-6-2 "Prairie" Locomotives in the USA
Class Details by Steve Llanso of Sweat House Media
Class 101 (Locobase 15312)
Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 73, pp. 319+. See also Mississippi Rails' entry at [
] . Works number was 58057 in October 1924.
101 was one of few new locomotives bought for the TRR. Its 1924 price was $21,250. The engine was destined for a line that had maximum grades of 2 1/2% and 18 degree (radii of 320 feet/97.6 metres).
After three decades of service on the TRR, the 101 was sold to the T R Miller Mill Company of Brewton, Ala in 1954. It next changed hands when collector Herbert Hansen of Union, IL bought the 101 in July 1969.
As of 2013, the locomotive was held as part of the Illinois Railroad Museum's collection.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 101 |
| Locobase ID | 15312 |
| Railroad | Tuskegee |
| Country | USA |
| Whyte | 2-6-2 |
| Number in Class | 1 |
| Road Numbers | 101 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1924 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10.25 / 3.12 |
| Engine Wheelbase (ft / m) | 26.83 / 8.18 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.38 |
| Overall Wheelbase (engine & tender) (ft / m) | 48.75 / 14.86 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 92,000 / 41,731 |
| Engine Weight (lbs / kg) | 120,000 / 54,431 |
| Tender Loaded Weight (lbs / kg) | 83,000 / 37,648 |
| Total Engine and Tender Weight (lbs / kg) | 203,000 / 92,079 |
| Tender Water Capacity (gals / ML) | 4000 / 15.15 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 7 / 6 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 51 / 25.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 44 / 1118 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 24" / 432x610 |
| Tractive Effort (lbs / kg) | 24,118 / 10939.75 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.81 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 200 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 14.75 / 4.50 |
| Firebox Area (sq ft / m2) | 101 / 9.38 |
| Grate Area (sq ft / m2) | 18.70 / 1.74 |
| Evaporative Heating Surface (sq ft / m2) | 1637 / 152.08 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1637 / 152.08 |
| Evaporative Heating Surface/Cylinder Volume | 259.43 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3366 |
| Same as above plus superheater percentage | 3366 |
| Same as above but substitute firebox area for grate area | 18,180 |
| Power L1 | 4481 |
| Power MT | 322.14 |