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NZR O class

O Class 2-8-0 steam locomotive NZR number 99

Type and origin
Power type	Steam
Builder	Baldwin Locomotive Works
Serial number	7565–7569, 7572 (not in engine number order)
Build date	1885

Specifications
Configuration:
• Whyte	2-8-0
Gauge	3 ft 6 in (1,067 mm)
Driver dia.	36.25 in (0.921 m)
Length	46 ft 3 in (14.10 m)
Adhesive weight	25.2 long tons (25.6 tonnes; 28.2 short tons)
Total weight	45.5 long tons (46.2 t; 51.0 short tons)
Firebox: • Firegrate area	15.2 sq ft (1.41 m²)
Boiler pressure	130 lbf/in² (896 kPa)
Heating surface	908 sq ft (84.4 m²)
Cylinders	Two, outside
Cylinder size	15 in × 18 in (381 mm × 457 mm)

Performance figures
Tractive effort	10,055 lbf (44.73 kN)

Career
Operators	New Zealand Government Railways
Number in class	6
Numbers	31, 54, 59, 98-100
Retired	May 1922

The NZR O class consisted of six steam locomotives that operated on New Zealand's national rail network. Ordered from the Baldwin Locomotive Works of Pennsylvania in 1885, three arrived in time to begin work in December 1885, while two more were placed in service in January 1886 and the sixth in February 1886. After almost four decades of service, all six were withdrawn in May 1922. None survived to be preserved, although two engine frames and 5 tenders from O class locomotives are known to exist near Summit on the former Rimutaka Incline.^[1]

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 were in Olive Green ground colour, although the Baldwin N and O classes of the 1880s had Tuscan Red ground colour. ^[2]

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Transcription

External links

References

Citations

^ Palmer & Stewart 1965, p. 56.
^ 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

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.

Diesel locomotives

Mainline	DA (inc. DAA, DAR) DB (inc. DBR) DC (inc. DCP) DF (English Electric) DF (General Motors) inc. DFT, DFB, DFM DG (inc. DH of 1956) DI DJ DL DM (on order) DQ and QR DX (inc. DXB, DXC, DXR)
Shunt	DE DH of 1978 DS DSA DSB DSC DSG DSJ TR

Electric locomotives

1500 V DC	E^A (later EO of 1968) E^C E^D E^O of 1923 E^W
25 kV AC	EF
Battery	E E^B

Diesel Multiple Units

Electric Multiple Units

1500 V DC (Wellington)	"English Electric" D^M (inc. D trailers) "Ganz Mavag" EM (inc. ET trailers) "Matangi" FP (inc. FT trailers)
25 kV AC (Auckland)	AM (inc. AMP, AMT, AMA)

Railcars

RM class	88 seater (also known as Fiats or twinsets) Clayton steam railcar Edison battery-electric railcar Red Terror railcar Midland railcar Leyland experimental petrol railcar McEwan Pratt petrol railcar Model T Ford railcar Sentinel-Cammell steam railcar Silver Fern railcar Standard railcar Thomas Transmission railcar Vulcan railcar Wairarapa railcar Westinghouse railcar
Others	A 88 Buckhurst petrol carriage

Steam locomotives

A of 1873
A of 1906 (inc. A^D)
A^A
A^B
B of 1874
B of 1899
B^A
B^B
B^C
C of 1873
C of 1930
D of 1874
D of 1929
E of 1872 & 1875
E of 1906
F
F^A (inc. F^B)
G of 1874
G Garratt of 1928 (inc. Pacific rebuild)
H
J of 1874
J of 1939
J^A
J^B
K of 1877
K of 1932
K^A
K^B
L
L^A
M
N
N^A
N^C
O
O^A
O^B
O^C
P of 1876
P of 1885
Q of 1878
Q of 1901
R
S
T
U
U^A
U^B
U^C
U^D
V
W
W^A
W^AB
W^B
W^D
W^E
W^F
W^G
W^H
W^J
W^S
W^W
X
Y

Locomotive hauled carriages

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This page was last edited on 23 January 2023, at 12:46