| Queensland DD17 class locomotive | |
|---|---|
| Queensland DD17 class number 949 | |
| Power type | Steam |
| Builder | Ipswich workshops |
| Build date | 1948-1952 |
| Total produced | 12 |
| Configuration | 4-6-4T |
| Gauge | 3 ft 6 in (1,067 mm) |
| Driver diameter | 4 ft 3 in |
| Locomotive weight | 62 tons |
| Boiler pressure | 180 psi |
| Heating surface: Firebox |
18.5 sq ft |
| Cylinders | Two, outside |
| Cylinder size | Diameter: 17 in (432 mm) |
| Tractive effort | 20, 808 lb |
| Career | Queensland Railways |
| Class | DD17 |
| 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 DD17 class steam locomotive was a 4-6-4T locomotive of the Queensland Railways (QR).[1]
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.
Contents |
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:
http://www.australiansteam.com/qgrframe.htm
http://www.zigzagrailway.com.au/index.php
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