New South Wales 41 class locomotive

New South Wales 41 class locomotive
New South Wales 41 class
4105 heads a Via Crucis special towards Campbelltown, Good Friday 1961
Power type Diesel-electric
Builder British Thomson-Houston, UK
Total produced 10
AAR wheel arr. B-B
UIC classification Bo′Bo′
Gauge 4 ft 8 12 in (1,435 mm)
Wheel diameter 42 in (1,067 mm)
Length Over headstocks: 43 ft 0 in (13.11 m),
Over coupler pulling faces: 47 ft 3 in (14.40 m)
Width 9 ft 4 in (2.84 m)
Height 14 ft 0 in (4.27 m)
Axle load 20 tons 10 cwt (45,900 lb or 20.8 t)
Locomotive weight 82 tons 0 cwt (183,700 lb or 83.3 t)
Fuel type Diesel fuel
Fuel capacity 500 imp gal (2,300 l; 600 US gal)
Lubricant capacity 45 imp gal (200 l; 54 US gal) per engine
Coolant capacity 40 imp gal (180 l; 48 US gal) per engine
Sandbox capacity 11.5 cu ft (0.33 m3)
Prime mover Paxman 12-RPHL, 2 off
Engine RPM range 680–1300
Engine type Four-stroke diesel
Aspiration Normally aspirated
Generator BTH RTB 10844
Traction motors BTH 157AZ, 4 off
Cylinders V12
Cylinder size 7 × 7.75 in (178 × 197 mm)
Top speed 57 mph (92 km/h)
Power output Gross: 400 hp (298 kW) per engine,
For traction: 360 hp (268 kW) per engine
Tractive effort Continuous: 22,800 lbf (101.42 kN) at 11 mph (18 km/h)
Career New South Wales Government Railways
Number 4101–4110
First run 30 October 1953
Retired 1975
Withdrawn June 1975
Preserved 4102
Disposition 1 preserved, remainder scrapped

The 41 class was a class of diesel locomotive ordered and operated by the New South Wales Government Railways in Australia between 1953 and 1975. The class was the second mainline diesel locomotive type used by the government railways as part of the NSWGR's introduction of new diesel locomotives. However, the class proved to be unreliable and only served the railways for 22 years, with the last example withdrawn in 1975.

4108 brings a coal train from Narellan into Campbelltown



An order was placed for ten 1,000 horsepower (750 kW) diesel locomotives with Australian General Electric Pty. Ltd. in 1950 by the New South Wales Government Railways. The contract was then sent to their sub-contractors, British Thomson-Houston, in the UK.[1] Locomotive 4101 was delivered later than the second example, 4102 (4102 was delivered 13 October 1953), and the last member of the class, 4110, was delivered in February 1955.

The Paxman 12-RPHL engine was very unreliable due to low cooling water capacity-similar problems existed on the British Rail (BR) locomotive classes 15 and 16 . The excitation system was not allowing the two motors to share the same load-also the cooling system layout did not allow multiple locomotives to work due to the radiator heat passing from the leading 41 class loco to the trailing locos.

Modifications were carried out in 1955–1956 to make the radiators extend forward, blank off the side off exit panels and duct the hot air out through the headlight, and mufflers were modified on 4102 and 4104 in 1958. This included relocating the mufflers to over the normal roofline-this was successful, but locomotives 4101, 4103, and 4105-4110 was not modified.

4110 was the last locomotive to wear the green colour scheme on a diesel locomotive, before been repainted Tuscan Red in August 1970. The railways administration had run out of patience with the class by around the 1960s and some of the locomotives were put aside. 4102 was the last locomotive in service, been withdrawn in June 1975 after seizing a piston in the 'A' engine, and had travelled 492,650 km-the most used out of the class.


4102 is the only loco preserved. It was donated by the New South Wales Public Transport Commission to the New South Wales Rail Transport Museum on the 31st December 1976.

After it arrived at the New South Wales Rail Transport Museum in 1977, the engine was temporarily repaired by members of the Illawarra Group. It failed again in 1982 following another failure in the 'A' engine whilst returning from a trip in Picton with a loop-line train and 4102 was then used as an one-engine shunter until 1987, when the batteries finally wore out. During 1996, it was stored at the XPT Meeks Road Maintenance Centre in Sydenham, where the spare engine was put in. It has since returned to the NSW RTM, but before the locomotive can be used again, it needs to have its engines started and commissioned first.


4102 at the NSW Rail Transport Museum in 2001


  1. ^ "The 41-Class Diesel-Electric Locomotive". Australian Railway Historical Society Bulletin: pp. 1–3. January 1954. 
  • New South Wales Rail System Locomotives. Sydney: Archives Section, State Rail Authority of New South Wales. 1984. 

External links

Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • New South Wales 48 class locomotive — New South Wales 48 class GrainCorp s 48203 at the Junee Roundhouse Power type Diesel electric Builder A. E. Goodwin under licence from American Locomotive Company …   Wikipedia

  • New South Wales AD60 class locomotive — New South Wales AD60 class Beyer Garratt 6012 tops the grade at Cowan with a goods train bound for Sydney. Power type Steam Builder Beyer, Peacock and Company Serial number …   Wikipedia

  • New South Wales Z12 class locomotive — 1210 in early 2006 Power type Steam Builder Beyer, Peacock Co. (34), Dübs Co. (26), Atlas Engineering Works (8) Serial number BP 1620–1637, 1675 …   Wikipedia

  • New South Wales D57 class locomotive — New South Wales D57 class 5711 stands in Junee yard ready to head north on 23 September 1961 Power type Steam Builder Clyde Engineering Total produced 25 …   Wikipedia

  • New South Wales 91 class locomotive — is a heavy duty locomotive of one of the operators on the New South Wales railways. It has a Co Co wheel arrangement. References RailPage Categories: New South Wales locomotives …   Wikipedia

  • New South Wales 46 class locomotive — New South Wales 46 class 4615 locomotive at the Junee Roundhouse Museum Power type Electric Builder Metropolitan Vickers/Beyer Peacock …   Wikipedia

  • New South Wales 40 class locomotive — New South Wales 40 class Two 40 class head north near Wondabyne Power type Diesel electric Builder Montreal Locomotive Works, Canada Build date October 1951 to Fe …   Wikipedia

  • New South Wales X200 class locomotive — New South Wales X200 class (series 1: X201–X206) X203 rests in the up dock at Wagga Wagga while a steam hauled enthusiast special stand at the platform on 19 September 1965. Power type Diesel mechanical Builder NSWGR Chullora Workshops …   Wikipedia

  • New South Wales Z18 class locomotive — New South Wales Z18 class 1805 stands outside the Reid s Hill depot, Port Kembla. Power type Steam Builder Vulcan Foundry Serial number 992–997 Build da …   Wikipedia

  • New South Wales 81 class locomotive — New South Wales 81 class Freightcorp liveried locomotive 8173 leading Pacific National liveried 8160, at Footscray, Victoria. Power type Diesel electric Builder Clyde Engineering, Bathurst, NSW …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”