Data from E L Ahrons, The British Railway Locomotive, 1825-1925 (London: Locomotive Publishing Company, 1926); and "The Sligo, Leitrim, and Northern Counties Ry," The Locomotive Magazine, Volume VIII [8] (9 May 1903), pp. 335.
Based on a design originally developed for South Australian railways. Works numbers were 2137-2138 in 1882, 36677 in 1895, and 4073-4074 in 1899. The first two were named Leitrim and Fermanagh, the next Lurganboy, and the last two Lissadell and Hazlewood. The class had a low profile with a dome over the center driven axle.
The S L & NC opened its first section in 1879 and completed its 49-mile main line in 1882. It ran from Sligo on the northwest coast to Enniskillen. Among the distinctions owned by this Irish Broad Gauge railway was that it was the last railway to retain its independence from the national system. Subsidized since the 1920s by both the Irish Free State and the United Kingdom - because it served both jurisdictions - traffic had fallen off enough by the mid-1950s to render the line unsupportable and it closed on 1 October 1957.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Leitrim |
| Locobase ID | 3034 |
| Railroad | Sligo, Leitrim & Northern Counties |
| Country | Ireland |
| Whyte | 0-6-4T |
| Number in Class | 5 |
| Road Numbers | |
| Gauge | 5'3" |
| Number Built | 5 |
| Builder | Beyer, Peacock |
| Year | 1882 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 11.04 / 3.36 |
| Engine Wheelbase (ft / m) | 23.25 / 7.09 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.47 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 60,032 / 27,230 |
| Engine Weight (lbs / kg) | 96,208 / 43,639 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1440 / 4.55 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.80 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 33 / 16.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 57 / 1448 |
| Boiler Pressure (psi / kPa) | 130 / 900 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16.5" x 20" / 419x508 |
| Tractive Effort (lbs / kg) | 10,556 / 4788.13 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.69 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 150 - 1.875" / 0 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 75.80 / 7.04 |
| Grate Area (sq ft / m2) | 14.90 / 1.38 |
| Evaporative Heating Surface (sq ft / m2) | 973 / 90.43 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 973 / 90.43 |
| Evaporative Heating Surface/Cylinder Volume | 196.58 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1937 |
| Same as above plus superheater percentage | 1937 |
| Same as above but substitute firebox area for grate area | 9854 |
| Power L1 | 3373 |
| Power MT | 371.61 |