1. Introduction

2. Withdrawal

3. Industrial service

4. Mitsubishi for industry

5. References

6. Further reading

The NZR D^SB class is a class of shunting locomotive introduced to New Zealand's national rail network in 1954 by New Zealand Railways (NZR).{{sfn|Palmer & Stewart|1965|p=147}}

Introduction

In 1950, NZR placed an order for 25 D^SB shunting locomotives.{{sfn|Palmer & Stewart|1965|p=147}} They were built by the Drewry Car Co. between 1954 and 1956.{{sfn|Palmer & Stewart|1965|p=147}} The first three D^SB class locomotives were commissioned in August 1954. The D^SB are a larger and more powerful locomotive than the D^S and D^SA, classes and were used all over New Zealand. A second batch of three locomotives built by Mitsubishi Heavy Industries was introduced in 1967.{{sfn|Parsons|2002|p=26}}

By the end of their lives, 12 D^SBs were repainted in the "International Orange" livery.

Withdrawal

In line with NZR's policy of rationalising locomotive classes, the DSB class was entirely withdrawn by the end of the 1980s.{{sfn|Parsons|2002|p=26}}

Industrial service

Three were purchased for industrial service with D^SB 1153 going to New Zealand Milk Products (later subsumed into Fonterra) to shunt their Whareroa milk factory, 1194 to Pacific Steel at Otahuhu scrap plant and 1221 to Avon Engineering at their Kamo plant. D^SB 1221 was sold in 1986 while the other two were sold in April the same year. In 1963 all Drewry builds were re-engined with Caterpillar D343TA replacing their National M4AA7 which they entered service with. This increased their power output from 195 kW (260 hp) to 293 kW (353 hp).^[1]

As of July 2014 only one has been preserved, D^SB 313 was purchased in January 1991 by the Mainline Steam Heritage Trust for shunting at their Parnell depot.^[2]

Mitsubishi for industry

Road numbers ORBs 1 and 2

Maker's N^os 1475 and 1476

Two 0-6-0 locomotives were built by Mitsubishi Heavy Industries for industrial service for the Ohai Railway Board in 1967.

ORB 1 was withdrawn in 1989 due to heavier trains and was replaced by DJ 3303. In 1990 the New Zealand Railways Corporation took over the Ohai Railway Boards section of the Wairio Branchline. It was then stored in Wairio until being sold to the Ohai Railway Board Heritage Trust for preservation.

ORB 2 shares a similar operating history to ORB 1, but was withdrawn in 1990. Stored in Wairio until 1992 when it was purchased by Reid McNaught for Steam Incorporated. It was then sold to Richard Gibbard in the early 2000s and is still in service for shunting by Steam Inc.

References

Further reading

• {{cite book|last=Parsons|first=David|title=New Zealand Railway Motive Power 2002|publisher=New Zealand Railway and Locomotive Society|year= 2002|isbn=978-0-908573-78-3|pages=64|url=http://railsoc.org.nz/publication-catalogue/|ref={{sfnref|Parsons|2002}}}}
• {{cite book|last1=Palmer|last2=Stewart|first1=A.N.|first2=W.W.|title=Cavalcade of New Zealand Locomotives|publisher=A H. & A W. Reed|date=1965|ref={{sfnref|Palmer & Stewart|1965}}|ISBN=9780207945007}}

• Bitronics
• Bitrot
• Bit rotation
• Bit rotting
• Bitrotting
• Bitruncated
• Bitruncated 120-cell
• Bitruncated 16-cell
• Bitruncated 5-cell
• Bitruncated 600-cell
• Bitruncated alternated cubic honeycomb
• Bitruncated cubic honeycomb
• Bitruncated tesseract
• Bitruncation
• Bitruncation (geometry)
• Bitsa
• Bitsa maniac
• Bits and Bytes
• Bitsa Park
• Bitsa Park Maniac
• Bitsch
• Bitsch, Switzerland
• Bitsch (Switzerland)
• Bitschumbi lampeye
• Bitsch (Valais)