NZR X class
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NZR X class

NameNZR X class
PowertypeSteam
Builddate1908 - 1909, 1913 - 1915
1943 - 1949 (rebuild)
BuilderNZR Addington Workshops
Weight66.7 LT (original)
66.6 LT (rebuild)
Tenderweight27.3 LT (original)
28.55 LT (rebuild)
Locotenderweight94.0 LT (original)
95.15 LT (rebuild)
Whytetype 
Firstrundate1909
Lastrundate1957
DispositionWithdrawn, one preserved
Numinclass18
Weightondrivers46.7 LT (original)
45.6 LT (rebuild)
Boilerpressure230 psi (original)
215 psi (rebuild)
Gauge42al=onlk=on
CurrentownerFeilding & Districts Steam Rail Society (1)
Cylindercount2 high pressure + 2 low pressure (original)
4 high pressure (rebuild)
Hpcylindersize13.5 x 22 in (34.3 x 55.9 cm )
Lpcylindersize22 x 22 in (55.9 x 55.9 cm )
Tractiveeffort26620 lbf (67614.8 kN) (original)
29500 lbf (74930 kN) (rebuild)
Topspeed30 mph (48.3 km/h)
Retiredate1935 � 1950
LocaleNorth Island Main Trunk
Roadnumber439 � 446
588 � 597
Length56 ft 9.75 in (91.4 1)
FueltypeCoal
Fuelcap4.0 LT (6.4 t) (original)
5.0 LT (8 t) (rebuild)
Watercap2200 impgal (10001.4 L)
Firearea37.1 sqft (3.4 m2) (original)
37.5 sqft (3.5 m2) (rebuild)
SuperheaterareaNone (original)
168 sqft (15.6 m2) (rebuild)

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The NZR X class was a pioneering class of eighteen 4-8-2 steam locomotives designed by A. L. Beattie that operated on the national rail network of New Zealand. In 1908, a heavy and powerful locomotive was required to haul traffic on the newly completed mountainous central section of the North Island Main Trunk Railway, and as a logical progression of the 4-6-2 Q class design, the 4-8-2 wheel arrangement was created for the X class.

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Rail vehicles of New Zealand

Battery electric locomotivesE - EB
Diesel locomotivesDA (inc. DAA, DAR) - DB (inc. DBR) - DC (inc. DCP) - DE - DF (English Electric) - DF (General Motors) inc. DFT - DG (inc. DH of 1956) - DH of 1978 - DI - DJ - DL - DQ (inc. QR) - DS - DSA - DSB - DSC - DSG - DSJ - DX (inc. DXB, DXC and DXR) - TR
Diesel Multiple UnitsADK (inc. ADB trailers) - ADL (inc. ADC trailers)
Electric locomotivesEA (later EO of 1968) - EC - ED - EF - EO of 1923 - EW
Electric Multiple UnitsDM (inc. D trailers) - EM (inc. ET trailers) - "Matangi" FP (inc. FT trailers)
RailcarsRM class railcars: 88 seater (also known as Fiats or twinsets) - Clayton steam railcar - Edison battery-electric railcar - Leyland diesel railbus - Leyland experimental petrol railcar - MacEwan-Pratt petrol railcar - Model T Ford railcar - Sentinel-Cammell steam railcar - Silver Fern - Standard - Thomas Transmission - Vulcan - Wairarapa - Westinghouse

Non-RM class railcar: A 88 Buckhurst petrol carriage

Steam locomotivesA of 1873 - A of 1906 (inc. Ad) - AA - AB - B of 1874 - B of 1899 - BA - BB - BC - C of 1873 - C of 1930 - D of 1874 - D of 1929 - E of 1872-75 - E of 1906 - F - FA (inc. FB) - G of 1874 - G Garratt of 1928 (inc. Pacific rebuild) - H - J of 1874 - J of 1939 - JA - JB - K of 1877 - K of 1932 - KA - KB - L - LA - M - N - NA - NC - O - OA - OB - OC - P of 1876 - P of 1885 - Q of 1878 - Q of 1901 - R - S - T - U - UA - UB - UC - UD - V - W - WA - WAB (inc. WS) - WB - WD - WE - WF - WG - WH - WJ - WW - X - Y
Locomotive hauled carriages50-foot carriage - 56-foot carriage - ex-British Rail Mark 2 carriage- AK carriage - FM class guards van
See also: Locomotives of New Zealand; Motive power explanation; Multiple units and Railcars descriptions.



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