Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 29, p. 62. Works number was 27923 in April 1906..
The specs called for this Mogul to scale 3% grades and negotiate 18-deg curves on the 8 miles of this small logging railroad. After the Hobart Southern was abandoned in December 1937, the 6 was sold.
Principal Dimensions by Steve Llanso of Sweat House Media | |
|---|---|
| Class | 6 |
| Locobase ID | 12472 |
| Railroad | Sierra Nevada Wood & Lumber Company |
| Country | USA |
| Whyte | 2-6-0 |
| Number in Class | 1 |
| Road Numbers | 6 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1906 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 13.42 / 4.09 |
| Engine Wheelbase (ft / m) | 19.92 / 6.07 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.67 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 54,000 / 24,494 |
| Engine Weight (lbs / kg) | 65,000 / 29,484 |
| Tender Loaded Weight (lbs / kg) | 50,000 / 22,680 |
| Total Engine and Tender Weight (lbs / kg) | 115,000 / 52,164 |
| Tender Water Capacity (gals / ML) | 2500 / 9.47 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 30 / 15 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 42.50 / 1080 |
| Boiler Pressure (psi / kPa) | 165 / 11.40 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14" x 20" / 356x508 |
| Tractive Effort (lbs / kg) | 12,936 / 5867.68 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.17 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 156 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9.04 / 2.76 |
| Firebox Area (sq ft / m2) | 74.70 / 6.94 |
| Grate Area (sq ft / m2) | 9.80 / 0.91 |
| Evaporative Heating Surface (sq ft / m2) | 806 / 74.91 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 806 / 74.91 |
| Evaporative Heating Surface/Cylinder Volume | 226.40 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1617 |
| Same as above plus superheater percentage | 1617 |
| Same as above but substitute firebox area for grate area | 12,326 |
| Power L1 | 3872 |
| Power MT | 474.24 |