Data from "The Sligo, Leitrim, and Northern Counties Ry," The Locomotive Magazine, Vol VIII (9 May 1903), pp. 335. Works number was 178. Boiler pressure is an estimate.
Erne's layout might be described as "Atlantic tank", but that would be quite misleading. The trailing axle supported the small coal bunker behind the cab rather than the firebox. Indeed, the latter rode between the coupled axles.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Erne |
| Locobase ID | 10320 |
| Railroad | Sligo, Leitrim & Northern Counties |
| Country | Ireland |
| Whyte | 4-4-2T |
| Number in Class | 1 |
| Road Numbers | |
| Gauge | 5'3" |
| Number Built | 1 |
| Builder | Hudswell, Clarke |
| Year | 1883 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.50 / 2.29 |
| Engine Wheelbase (ft / m) | 26 / 7.92 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.29 |
| Overall Wheelbase (engine & tender) (ft / m) | 5.67 / 1.73 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 112,000 / 50,802 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1440 / 5.45 |
| 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) | 60 / 1524 |
| Boiler Pressure (psi / kPa) | 130 / 900 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 24" / 406x610 |
| Tractive Effort (lbs / kg) | 11,315 / 5132.40 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 150 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | |
| Evaporative Heating Surface (sq ft / m2) | |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | |
| Evaporative Heating Surface/Cylinder Volume | |
| 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 | |
| Power L1 | |
| Power MT | |