Irish locomotive class
Great Northern Railway Classes PG, QG, QLG and QNG Type and origin Power type Steam Designer C. Clifford Serial number 10,11,100−103,151 (PG) 152-155 (QG) 119, 158-165 (QLG) 38, 39, 112 (GNQ) Build date 1899—1911 Total produced 28
Specifications Configuration: • Whyte 0-6-0 Gauge 5 ft 3 in (1,600 mm )Driver dia.4 ft 7+ 1 ⁄4 in (1,403 mm) Loco weight 39 long tons 14 cwt (88,900 lb or 40.3 t)—49 long tons 0 cwt (109,800 lb or 49.8 t) Boiler pressure 175 lbf/in2 (1,206.58 kPa) Cylinders Two, inside Train heating steam
Performance figures Tractive effort 19,880 lbf (88.43 kN)−24,065 lbf (107.05 kN)
Great Northern Railway Classes PG, QG, QLG and QNG [ a] were a series of 0-6-0 freight locomotives introduced from 1899 by Charles Clifford.
The PG class was introduced in December 1899 by Charles Clifford with 4 feet 7 inches (1.40 m) driving wheels and 18+ 1 ⁄2 by 24 inches (47 cm × 61 cm) cylinders. The QG's introduced in 1904 were 1 foot 6 inches (0.46 m) longer than the PG with 18+ 1 ⁄2 by 26 inches (47 cm × 66 cm) cylinders weighed in 2 tons heavier. The key changed with the QLG class introduced in 1906 was a 4 feet 9 inches (1.45 m) wide boiler.
^ There are variations in the class designations, sometimes LQG is used for QLG for example
Belfast and County Down Railway (1846–1948)Belfast and Northern Counties Railway (1860–1903)Northern Counties Committee (1903–1949)Great Northern Railway (1876–1958)Sligo, Leitrim and Northern Counties Railway (1875–1957)Cork, Bandon and South Coast Railway (1849–1924) 1, 2 1, 2, 4A, 8 2 (II) 3, 4 3, 9, 10, 18 5, 6 7 (I) 7 (II) 9, 10 11 5, 6, 12, 16, 17 14, 15 19, 20 4, 8, 11, 13, 14, 15, 19, 20 Argadeen St Molaga Slaney Dublin and Kingstown Railway (1834–1856)Dublin and South Eastern Railway (1854–1925) 1, 2, 6–7, 9–10, 28, 44–47, 49 3, 8, 10–12, 27–30, 40, 45–46 4–5 13–14, 18, 65–66 15–16 15–23, 37–39, 48 17, 36 20, 34–35 24–26, 32–33 42–44 50–51 52–54 55–58 59–64 67–68 69–70 Great Southern and Western Railway (1845–1924)Midland Great Western Railway (1847–1924)Great Southern Railways (1925–1944)Córas Iompair Éireann (1945–1962)Tralee and Dingle Light Railway (1891–1953)Industrial engines