Hobi Timber Company 2-6-2 "Prairie" Locomotives in the USA
Class Details by Steve Llanso of Sweat House Media
Class 2 (Locobase 14814)
Data from Builder's card for order C-746 from the American Locomotive Company, posted at [
], last accessed 5 January 2013. See also "COOK CREEK TREE" at [
], which describes the highest-from-the-ground fire lookout station in the world. And [] and "Excerpt from the Quinault Forest History" presented by the Heritage Research Center at [] for the brief bio of the HTC. Works number was 64999 in September 1923.
Hobi Timber Company incorporated in 1922 and successfully gained access to Washington State's Quinault Reservation when it bought 11,300 acres (4,588 ha) in the Cook Creek Unit estimated to hold 305 million board feet of timber. Frank D. Hobi had managed an earlier timber harvester and owned a logging company.
This logging Mogul arrived soon after the timber company began harvesting. It kept its road number through sales to Pacific National Lumber and Harbor Plywood.
Hobi sold his interests in 1927 to the Corkery Brothers and Arnold Brandis and later logged at Mineral in Lewis County.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 2 |
| Locobase ID | 14814 |
| Railroad | Hobi Timber Company |
| Country | USA |
| Whyte | 2-6-2T |
| Number in Class | 1 |
| Road Numbers | 2 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Alco-Cooke |
| Year | 1923 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10.50 / 3.20 |
| Engine Wheelbase (ft / m) | 24.83 / 7.57 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.42 |
| Overall Wheelbase (engine & tender) (ft / m) | 24.83 / 7.57 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 107,000 / 48,534 |
| Engine Weight (lbs / kg) | 141,200 / 64,047 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 141,200 |
| Tender Water Capacity (gals / ML) | 1800 / 6.82 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 800 / 3028 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 59 / 29.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 46 / 1168 |
| Boiler Pressure (psi / kPa) | 185 / 1280 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 24" / 457x610 |
| Tractive Effort (lbs / kg) | 26,582 / 12057.41 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.03 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 250 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.50 / 3.20 |
| Firebox Area (sq ft / m2) | 118 / 10.96 |
| Grate Area (sq ft / m2) | 24.70 / 2.30 |
| Evaporative Heating Surface (sq ft / m2) | 1480 / 137.55 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1480 / 137.55 |
| Evaporative Heating Surface/Cylinder Volume | 209.34 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4570 |
| Same as above plus superheater percentage | 4570 |
| Same as above but substitute firebox area for grate area | 21,830 |
| Power L1 | 4153 |
| Power MT | 256.70 |