DWWR 2

DW&WR 2
Type and origin Power type Steam Designer R. Cronin Builder Grand Canal Street Build date 1885–1896
Specifications Configuration: ​  • Whyte 2-4-0T Gauge 5 ft 3 in (1,600 mm) Leading dia. 3 ft 8 in (1,120 mm) Driver dia. 5 ft 6 in (1,680 mm) Length 29 ft 8 in (9,040 mm) Axle load 14.5 long tons (14.7 t) Loco weight 40 long tons (41 t) Water cap. 800 imp gal (3,600 L; 960 US gal) Boiler pressure 150 lbf/in2 (1.03 MPa) Cylinders 2 Cylinder size 17 in × 24 in (432 mm × 610 mm)
Performance figures Tractive effort 12,700 lbf (56.49 kN)
Career Operators DW&WR DSER GSR CIÉ Class G1 (Inchicore) Power class O/N T Number in class 11 Numbers 1, 2, 6, 7, 9, 10, 28, 45–47, 49 423-425 (GSR/CIÉ) Locale Ireland Withdrawn 1925-1955 Disposition All scrapped
As re-built 1912

The Dublin, Wicklow and Wexford Railway (DW&WR) 2, built in 1885, was the predecessor to a total of eleven 2-4-0T locomotives to emerge from Grand Canal Street railway works between 1885 and 1896.

Nos. 1, 6, 7 and 10, built between 1892 and 1896, had detail differences between them, Ahrons describes them as having a more modern appearance.

Locomotive No. 10 (St. Seneanus) was rebuilt as 2-4-2T in 1903. Nos. 28 (St. Lawrence), 45 (St. Kieran), and 46 (Princess Mary) were also rebuilt later in 1909/10.

On review following amalgamation into Great Southern Railways (GSR) in 1925, Nos. 1, 2 and 6 were promptly withdrawn despite No. 2 having received a new boiler in 1914. The remaining four engines Nos. 7, 9, 47 and 49 were designated GSR class 423/G1 and allocated the numbers 426, 424, 425 and 423 respectively. Unlike the other survivors, No. 426 had not been re-boilered in 1914–1916 and it was withdrawn in 1926.