SSLR 4

Schull & Skibbereen Light Railway 4
Type and origin Power type Steam Builder Nasmyth, Wilson & Co. Serial number 341 or 342 Build date 1888
Specifications Configuration: ​  • Whyte 4-4-0T  • UIC 2′B n2t Gauge 3 ft (914 mm) Leading dia. 1 ft 10 in (0.559 m) Driver dia. 3 ft 4 in (1.016 m) Axle load 9 long tons 11 cwt (21,400 lb or 9.7 t) 9 long tons 11 cwt (9.7 t; 10.7 short tons) Adhesive weight 18 long tons 10 cwt (41,400 lb or 18.8 t) 18 long tons 10 cwt (18.8 t; 20.7 short tons) Loco weight 24 long tons 6 cwt (54,400 lb or 24.7 t) 24 long tons 6 cwt (24.7 t; 27.2 short tons) Fuel type Coal Fuel capacity 0 long tons 10 cwt (1,100 lb or 0.5 t) 0 long tons 10 cwt (0.51 t; 0.56 short tons) Water cap. 500 or 600 imp gal (2,300 or 2,700 L; 600 or 720 US gal) Firebox: ​  • Grate area 9 sq ft (0.84 m2) Boiler pressure 150 lbf/in2 (1.03 MPa) Heating surface: ​  • Firebox 56 sq ft (5.2 m2)  • Tubes 453 sq ft (42.1 m2) Cylinders Two Cylinder size 12 in × 18 in (305 mm × 457 mm)
Performance figures Tractive effort 8,260 lbf (36.74 kN)
Career Operators SSLR » Great Southern Railways » CIÉ Class GSR/CIÉ: 4S or DN5 Number in class 1 Numbers 4 Official name Erin Withdrawn 1954

Schull and Skibbereen Railway 4 Erin was a 4-4-0T locomotive manufactured by Nasmyth, Wilson and Company of Patricroft near Manchester in 1888. It was the Schull and Skibbereen Railway's fourth locomotive.

In 1925, the railway was absorbed into the Great Southern Railways and renumbered 4S, and placed in Class 4S or Class DN5 as the sole member. Following the GSR classification by wheel arrangement, "D" meaning a locomotive with a 4-4-0 arrangement, "N" meaning Narrow Gauge. The 4-4-0 wheel arrangement is unusual for tank locomotives but more common on narrow gauge than standard.

The locomotive was withdrawn and scrapped in 1954.

References

• Clements, Jeremy & McMahon, Michael (2008). Locomotives of the GSR. Newtownards: Colourpoint Books. p. 222. ISBN 978-1-906578-26-8.