Queensland D17 class locomotive
Encyclopedia
The D17 class steam locomotive was a 4-6-4T locomotive of the Queensland Railways (QR).
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. The “D”, is used to identify the locomotive as a Tank Engine, followed by numerals indicating the cylinder diameter of seventeen inches, the number “6” was used to denote the number of coupled wheels before the “D”. As time went by the only tank locomotives in operation only had “6” coupled and the “D” was adopted to donate tank locomotives in Queensland Rail.
These superheated
engines were built to assist the 6D16 class with increasing suburban traffic. They were the only Queensland Railways class to be fitted as a whole, from new, with two sand-domes. They were restricted to the Brisbane suburban area with boundaries of Ipswich, Ferny Grove, Pinkenba, Shorncliffe, Petrie, Kingston and Lota. This area was later extended beyond Ipswich to Grandchester. Initially, all were attached to Mayne depot but later several were transferred to Wooloongabba.
Cylinder and steam chest castings are identical to C17 Class
. The ‘6’ was dropped from the classification in 1937. The engines were often unofficially referred to as ‘black tanks’ after the introduction of the DD17 class
. Engines constructed in 1937 had boilers with a pressure of 170 lbf/in2. Earlier engines were altered to that pressure as they passed through workshops. A wooden crate was fixed to the centre of the bunker to slightly increase the coal capacity from the original 3 tons.
Engines of this class were some of the last to receive electric headlights due to them being restricted to running in the Brisbane suburban area. Fitting of electric headlights commenced in 1951.
, Engineers, Maryborough, Queensland
.
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. The “D”, is used to identify the locomotive as a Tank Engine, followed by numerals indicating the cylinder diameter of seventeen inches, the number “6” was used to denote the number of coupled wheels before the “D”. As time went by the only tank locomotives in operation only had “6” coupled and the “D” was adopted to donate tank locomotives in Queensland Rail.
These superheated
Superheater
A superheater is a device used to convert saturated steam or wet steam into dry steam used for power generation or processes. There are three types of superheaters namely: radiant, convection, and separately fired...
engines were built to assist the 6D16 class with increasing suburban traffic. They were the only Queensland Railways class to be fitted as a whole, from new, with two sand-domes. They were restricted to the Brisbane suburban area with boundaries of Ipswich, Ferny Grove, Pinkenba, Shorncliffe, Petrie, Kingston and Lota. This area was later extended beyond Ipswich to Grandchester. Initially, all were attached to Mayne depot but later several were transferred to Wooloongabba.
Cylinder and steam chest castings are identical to C17 Class
Queensland C17 class locomotive
The C17 class locomotive was a 4-8-0 locomotive of the Queensland Railways. . The locomotives operated on narrow gauge.The design was so successful that 227 locomotives were built from 1920 when the first engine N° 15 entering service through until 1953 when N° 1000 was delivered. The 22 NM...
. The ‘6’ was dropped from the classification in 1937. The engines were often unofficially referred to as ‘black tanks’ after the introduction of the DD17 class
Queensland DD17 class locomotive
The DD17 class steam locomotive was a 4-6-4T locomotive of the Queensland Railways .The locomotives operated on 1,067 mm 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...
. Engines constructed in 1937 had boilers with a pressure of 170 lbf/in2. Earlier engines were altered to that pressure as they passed through workshops. A wooden crate was fixed to the centre of the bunker to slightly increase the coal capacity from the original 3 tons.
Engines of this class were some of the last to receive electric headlights due to them being restricted to running in the Brisbane suburban area. Fitting of electric headlights commenced in 1951.
Builders
Some of the class were built at Ipswich workshops and some by Walkers LimitedWalkers Limited
Walkers Limited is an Australian engineering company, based in Maryborough, Queensland, which built ships and locomotives. It is still in the locomotive-building business as part of Downer Rail.-History:...
, Engineers, Maryborough, Queensland
Maryborough, Queensland
Maryborough is a city located on the Mary River in South East Queensland, Australia, approximately north of the state capital, Brisbane. The city is serviced by the Bruce Highway, and has a population of approximately 22,000 . It is closely tied to its neighbour city Hervey Bay which is...
.
External links
- 6D17, later D17 class – Queensland Railways Interest Group