GNRI Class PG
(Redirected from GNRI Class QNG)
| Great Northern Railway Classes PG, QG, QLG and QNG | |||||||||||||||||||
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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.[1]
History
[edit]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.[2] 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.[3] The key changed with the QLG class introduced in 1906 was a 4 feet 9 inches (1.45 m) wide boiler.[4]
Notes
[edit]- ^ There are variations in the class designations, sometimes LQG is used for QLG for example
References
[edit]- ^ a b Boocock (2009), pp. 73−75.
- ^ Johnston (1999), pp. 81–82.
- ^ Johnston (1999), p. 83.
- ^ Johnston (1999), pp. 83–84.
- Boocock, Colin (1 October 2009). "Locomotive Compendium Ireland" (1st ed.). Ian Allan. ISBN 9780711033603.
- Johnston, Norman (1999). Locomotives of the GNRI. Newtownards: Colourprint Books. ISBN 1-898392-48-X. OCLC 43340833. OL 12248170M.