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NZR T class

The NZR T class was a class of steam locomotive used in New Zealand; of the "Consolidation" type, popular in North America, especially with the narrow gauge 3 ft (914 mm) Denver and Rio Grande Western Railroad.[1]

NZR T class
Goods train with T class locomotive leaving Lyttelton, ca. 1904
Type and origin
Power typeSteam
BuilderBaldwin Locomotive Works, United States
Serial number4660–4661, 4664-4667[1]
Build date1879
Total produced6
Specifications
Configuration:
​
 • Whyte2-8-0
 • UIC1′D
Gauge3 ft 6 in (1,067 mm)
Driver dia.36 in (914 mm)
Length44 ft 10 in (13.67 m)
Adhesive weight23.0 long tons (23.4 t; 25.8 short tons)
24.7 long tons (25.1 t; 27.7 short tons) (reboilered)
Loco weight26.2 long tons (26.6 t; 29.3 short tons)
Tender weight16.0 long tons (16.3 t; 17.9 short tons)
Fuel typeCoal
Fuel capacity2.1 long tons (2.1 t; 2.4 short tons)
Water cap.1,300 imp gal (5,900 L; 1,600 US gal)
Firebox:​
 • Grate area15.7 sq ft (1.46 m2)
Boiler pressure130 psi (896 kPa)
160 psi (1,103 kPa) (reboilered)
Heating surface812 sq ft (75.4 m2)
920 sq ft (85 m2) (reboilered)
SuperheaterNone
CylindersTwo, outside
Cylinder size15 in × 18 in (381 mm × 457 mm)
Performance figures
Maximum speed18 mph (29 km/h)
Tractive effort11,700 lbf (52.04 kN)
14,300 lbf (63.61 kN) (reboilered)
Career
OperatorsNew Zealand Railways
Numbers101–106
LocaleAll of New Zealand
First run1880
DispositionAll scrapped

History

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The Baldwin and Rogers locomotives reflected the styling adopted in the 1870s by American builders with elements from the Renaissance Revival and Neo-Baroque architectural styles, and with Islamic e.g. Moorish (from Alhambra) influences. Bold colours and painted decorations were used. Many Baldwin locomotives such as the T class were in Olive Green ground colour as originally built,[2] although the Baldwin N and O classes of the 1880s had Tuscan Red ground colour.[3]

In service

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Because of its small diameter driving wheels, the T class was typically limited to a speed of 29 km/h (18 mph).[1]

Withdrawal and disposal

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The first T class locomotive was withdrawn in 1922, with the last example withdrawn in 1924. Some managed to survive long enough to be dumped or have components dumped when the NZR started dumping locomotives for embankment protection in 1926.[1]

References

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Citations

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  1. ^ a b c d Palmer & Stewart 1965, p. 48.
  2. ^ https://www.pacificng.com/ref/locobuilders/blw/style/stylediag/NZR-T-Class-2-8-0.png
  3. ^ New Zealand's Early American Locomotives: The Design, Art and Architecture of the K, T and O Class Locomotives Part 2 by David Fletcher: "New Zealand Railfan", March 2015 pages 33-49: Volume 21 No 2

Bibliography

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  • Millar, Sean (2011). The NZR Steam Locomotive. Wellington: New Zealand Railway and Locomotive Society. ISBN 978-0-908573-89-9.
  • Palmer, A. N.; Stewart, W. W. (1965). Cavalcade of New Zealand Locomotives. Wellington: A H. & A W. Reed. ISBN 978-0-207-94500-7.
  • Stewart, W. W. (1974). When Steam was King. Wellington: A. H. & A. W. Reed Ltd. ISBN 978-0-589-00382-1.
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