Data from"Narrow Gauge Locomotive for Tunnel Work", Locomotive Magazine, Volume XXIX [29] (15 September 1923), p. 258.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Northampton |
| Locobase ID | 20962 |
| Railroad | Ironside Mines |
| Country | Great Britain |
| Whyte | 0-6-0ST |
| Number in Class | 1 |
| Road Numbers | |
| Gauge | 3' 8" |
| Number Built | 1 |
| Builder | WG Bagnall |
| Year | 1923 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 8.50 / 2.59 |
| Engine Wheelbase (ft / m) | 8.50 / 2.59 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 8.50 / 2.59 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 49,504 / 22,455 |
| Engine Weight (lbs / kg) | 49,504 / 22,455 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 49,504 / 22,455 |
| Tender Water Capacity (gals / ML) | 600 / 2.27 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 28 / 14 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 35.25 / 895 |
| Boiler Pressure (psi / kPa) | 150 / 1030 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 13" x 18" / 330x457 |
| Tractive Effort (lbs / kg) | 11,003 / 4990.88 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.50 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 107 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 7.75 / 2.36 |
| Firebox Area (sq ft / m2) | 50.60 / 4.70 |
| Grate Area (sq ft / m2) | 10 / 0.93 |
| Evaporative Heating Surface (sq ft / m2) | 431 / 40.04 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 431 / 40.04 |
| Evaporative Heating Surface/Cylinder Volume | 155.86 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1500 |
| Same as above plus superheater percentage | 1500 |
| Same as above but substitute firebox area for grate area | 7590 |
| Power L1 | 2180 |
| Power MT | 291.25 |