Jump to content
 







Main menu
   


Navigation  



Main page
Contents
Current events
Random article
About Wikipedia
Contact us
Donate
 




Contribute  



Help
Learn to edit
Community portal
Recent changes
Upload file
 








Search  

































Create account

Log in
 









Create account
 Log in
 




Pages for logged out editors learn more  



Contributions
Talk
 



















Contents

   



(Top)
 


1 Origin and design  





2 Service  





3 Withdrawal and disposal  





4 See also  





5 References  



5.1  Citations  





5.2  Bibliography  
















NZR G class (1874)






Deutsch
 

Edit links
 









Article
Talk
 

















Read
Edit
View history
 








Tools
   


Actions  



Read
Edit
View history
 




General  



What links here
Related changes
Upload file
Special pages
Permanent link
Page information
Cite this page
Get shortened URL
Download QR code
Wikidata item
 




Print/export  



Download as PDF
Printable version
 




In other projects  



Wikimedia Commons
 
















Appearance
   

 






From Wikipedia, the free encyclopedia
 


NZR G Class (1874)
G Class steam locomotive, NZR 55
Type and origin
BuilderBlack, Hawthorn & Co (4)
Build date1873
Specifications
Configuration:
 • Whyte4-4-0T
Driver dia.36 in (0.914 m)
Adhesive weight13.2 long tons (13.4 t; 14.8 short tons)
Loco weight18.2 long tons (18.5 tonnes; 20.4 short tons)
Firebox:
 • Grate area9 sq ft (0.84 m2)
Boiler pressure130 lbf/in2 (0.90 MPa)
Heating surface486 sq ft (45.2 m2)
CylindersTwo, outside
Cylinder size10.5 in × 18 in (267 mm × 457 mm)
Performance figures
Tractive effort4,893 lbf (21.77 kN)
Career
OperatorsNZR
DispositionAll scrapped

The NZR G Class was a class of four saddle tank locomotives from English builders Black Hawthorn in the early 1870s. Like the similarly sized D class, they were an attempt to produce a passenger version of the already highly successful F class.[1]

Origin and design[edit]

The G class was ordered by the Canterbury Provincial Council. They were derived from the F class, replacing the first of the three driving axles with a four-wheel bogie. It was hoped that the reduced rigid wheelbase would allow the locomotive to provide higher speed passenger services. The type suffered from lack of weight on the driving axles, a driver stating that "it took the 'G' all its time to push its front bogie along, let alone pull a load".[2] They were followed by the L Class which were a more successful attempt to produce a faster F Class.

Service[edit]

In the early 1890s the locomotives were progressively transferred to the Picton section, where it was felt that they had been relegated to get rid of them from the busy Hurunui-Bluff section. Their maximum load on the 1 in 37 gradient from Picton was six 4-wheel wagons.[3]

Withdrawal and disposal[edit]

All of the locomotives were withdrawn between 1915 and 1919 and were sold for further service in industry.

See also[edit]

References[edit]

Citations[edit]

  • ^ Millar 2011, p. 108.
  • ^ Boult, A A (September 1960). "The G Class 4-4-0 tank locomotives". Railway Observer. 85 (reprinted Oct 2017): 160–161.
  • Bibliography[edit]

    • Lloyd, W.G. (2002); Register of New Zealand Railways Steam Locomotives 1863-1971, Otago Railway & Locomotive Society/Triple M Publications
  • Millar, Sean (2011). The NZR Steam Locomotive. Wellington: New Zealand Railway and Locomotive Society. ISBN 978-0-908573-89-9.
  • W.W.Stewart (1970), When Steam Was King, REED
  • Palmer, A. N.; Stewart, W. W. (1965). Cavalcade of New Zealand Locomotives. Wellington: A H. & A W. Reed. ISBN 978-0-207-94500-7.

  • Retrieved from "https://en.wikipedia.org/w/index.php?title=NZR_G_class_(1874)&oldid=1178576010"

    Categories: 
    Steam locomotives of New Zealand
    Scrapped locomotives
    Railway locomotives introduced in 1874
    3 ft 6 in gauge locomotives of New Zealand
    Hidden categories: 
    CS1: long volume value
    Use dmy dates from April 2022
     



    This page was last edited on 4 October 2023, at 14:53 (UTC).

    Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization.



    Privacy policy

    About Wikipedia

    Disclaimers

    Contact Wikipedia

    Code of Conduct

    Developers

    Statistics

    Cookie statement

    Mobile view



    Wikimedia Foundation
    Powered by MediaWiki