One of the first non wood-burners on the F-J system, the 45 burned oil instead. Moreover, since the engine was superheated, the design adopted 10" (254 mm) piston valves for steam admission.
| Principal Dimensions by Steve Llanso of Sweat House Media | |
|---|---|
| Class | 45 |
| Locobase ID | 14,945 |
| Railroad | Frost-Johnson Lumber Company |
| Country | USA |
| Whyte | 2-8-2 |
| Number in Class | 1 |
| Road Numbers | 45 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1923 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 13.50 / 4.11 |
| Engine Wheelbase (ft / m) | 29 / 8.84 |
| Ratio of driving wheelbase to overall engine wheebase | 0.47 |
| Overall Wheelbase (engine & tender) (ft / m) | 54.79 / 16.70 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 118,000 / 53,524 |
| Engine Weight (lbs / kg) | 149,000 / 67,585 |
| Tender Loaded Weight (lbs / kg) | 98,000 / 44,452 |
| Total Engine and Tender Weight (lbs / kg) | 247,000 / 112,037 |
| Tender Water Capacity (gals / ML) | 4500 / 17.05 |
| Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT) | 1800 / 6.80 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 49 / 24.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 46 / 1168 |
| Boiler Pressure (psi / kPa) | 180 / 12.40 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 19" x 24" / 483x610 |
| Tractive Effort (lbs / kg) | 28,817 / 13071.19 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.09 |
| Heating Ability | |
| Firebox Area (sq ft / m2) | 154 / 14.31 |
| Grate Area (sq ft / m2) | 29 / 2.69 |
| Evaporative Heating Surface (sq ft / m2) | 1651 / 153.38 |
| Superheating Surface (sq ft / m2) | 373 / 34.65 |
| Combined Heating Surface (sq ft / m2) | 2024 / 188.03 |
| Evaporative Heating Surface/Cylinder Volume | 209.63 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5220 |
| Same as above plus superheater percentage | 6160 |
| Same as above but substitute firebox area for grate area | 32,710 |
| Power L1 | 10,124 |
| Power MT | 756.60 |