Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 45, p. 142. (Thanks to Chris Hohl for his 14 March 2018 email reporting the valve gear.) Works number was 33417 in May 1909.
See Locobase 13135 for a full description of a slightly earlier auto car. The Baldwin specs give details about the expectation for this coal-burner.
The RA Company was the American agency for the Hungarian Ganz company, which supplied "Auto cars" in Europe. "Mr Romer" of the RAC furnished the plans from which Baldwin was to "furnish mechanical parts for 200 HP type railway auto car comprising the boiler, superheater and all controlling parts and connections." The superheater consisted of tubes (119 sq ft/11.06 sq m) and a drum (11 sq ft/1.02 sq m). The front truck held a front, unpowered axle and the driven rear axle. Timothy Hackworth's son John Wesley Hackworth invented the radial gear in 1859.
Its fuel consumption of either anthracite or bituminous coal was not to exceed 30 pounds per mile (8.45 kg/km). Speeds of up to 50 mph (81 km/h) on the level were called for unless the auto car was pulling a 60,000-lb (27,216-kg) trailer in which case top speed dropped to 40 mph (64 km/h). Without the trailer, the autocar was to scale a 2 1/2% grade at 15 mph (24 km/h).
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 14062 |
| Railroad | Railway Auto Car Company |
| Country | USA |
| Whyte | 2-2-4T |
| Number in Class | 1 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1909 |
| Valve Gear | Hackworth |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | 40.58 / 12.37 |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | 40.58 / 12.37 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 60,000 / 27,216 |
| Engine Weight (lbs / kg) | 100,000 / 45,359 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1000 / 3.79 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 100 / 50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 36 / 914 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12" x 12" / 305x305 |
| Tractive Effort (lbs / kg) | 6528 / 2961.05 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 9.19 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 294 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 4.83 / 1.47 |
| Firebox Area (sq ft / m2) | 60.60 / 5.63 |
| Grate Area (sq ft / m2) | 14 / 1.30 |
| Evaporative Heating Surface (sq ft / m2) | 697 / 64.75 |
| Superheating Surface (sq ft / m2) | 130 / 12.08 |
| Combined Heating Surface (sq ft / m2) | 827 / 76.83 |
| Evaporative Heating Surface/Cylinder Volume | 443.95 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2240 |
| Same as above plus superheater percentage | 2598 |
| Same as above but substitute firebox area for grate area | 11,247 |
| Power L1 | 13,269 |
| Power MT | 487.55 |