Queensland DD17 class locomotive
|Queensland DD17 class locomotive|
Queensland DD17 class number 949
|Gauge||3 ft 6 in (1,067 mm)|
|Driver diameter||4 ft 3 in|
|Locomotive weight||62 tons|
|Boiler pressure||180 psi|
|18.5 sq ft|
|Cylinder size||Diameter: 17 in (432 mm)|
|Tractive effort||20, 808 lb|
|Nicknames||"Blue Baby" (1049 "Stormin Normin")|
|Preserved||1046, 1047, 1049, 1051.|
|Current owner||Zig Zag Railway (1046, 1047, 1049) Workshops Rail Museum (1051)|
|Disposition||1049 and 1051 operational|
The locomotives operated on 1,067 mm (3 ft 6 in) gauge. The significance of the first "D" is in line with the QR loco classing system where the letter referred to the number of coupled wheels. "A" refers to 4 coupled driving wheels, "B" to 6, "C" to 8 and "D" to 6 on a tank locomotive. The second "D" indicates an improved version of the earlier D17 class and the number "17" indicates the cylinder diameter of 17 inches. The DD17 class was built to provide more powerful motive power to the Brisbane suburban network.
All 12 locomotives were built at Ipswich workshops and given works numbers 199-210. Running numbers were 949-954 and 1046-1051.
Four are still in existence:
- No. 1046 is stored dismantled on the Zig Zag Railway, Lithgow, NSW, having been used in preservation between 1975 and the mid-1980s.
- No. 1047 is stored on the Zig Zag Railway, Lithgow, NSW, having been used in preservation between the 1970s and the mid-1990s.
- No. 1049 is operational on the Zig Zag Railway, Lithgow, NSW. It was restored to operation in the 1990s.
- No. 1051 is operational and part of the QR Heritage Fleet. It is often on display at the Workshops Rail Museum at North Ipswich, Queensland between main line tours.
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