| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Samson |
| Locobase ID | 8412 |
| Railroad | McLean & Rigg |
| Country | Australia |
| Whyte | 2-4-0T |
| Number in Class | 2 |
| Road Numbers | 1-2 |
| Gauge | 5'3" |
| Number Built | 2 |
| Builder | Beyer, Peacock |
| Year | 1882 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 6.25 / 1.90 |
| Engine Wheelbase (ft / m) | 14.25 / 4.34 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.44 |
| Overall Wheelbase (engine & tender) (ft / m) | 14.25 / 4.34 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 37,968 / 17,222 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 360 / 1.36 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 45 / 1143 |
| Boiler Pressure (psi / kPa) | 120 / 830 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 11" x 18" / 279x457 |
| Tractive Effort (lbs / kg) | 4937 / 2239.39 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 40 / 3.72 |
| Grate Area (sq ft / m2) | |
| Evaporative Heating Surface (sq ft / m2) | 416 / 38.66 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 416 / 38.66 |
| Evaporative Heating Surface/Cylinder Volume | 210.12 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | |
| Same as above plus superheater percentage | |
| Same as above but substitute firebox area for grate area | 4800 |
| Power L1 | 2800 |
| Power MT | |