New South Wales U set

The U sets were a type of electric multiple unit operated by the New South Wales Government Railways and its successors between September 1958 and November 1996. They were nicknamed U-boats.

U set
Preserved driving car CF 5003 at
Junee Roundhouse Railway Museum
In service1958 - 1996
ManufacturerCommonwealth Engineering
Built atGranville
Constructed1957 - 1960
Entered serviceSeptember 1958 - March 1960
Number built
  • 40 motor cars
  • 20 trailer cars
  • 20 non-smoking trailer cars
Number in service0
Number preserved12 motor cars, 18 trailer cars (as at 2018)
Formation4 car sets
Fleet numbers
  • CF 5001-40
  • TF 6001-20
  • ETB 6021-40
Operator(s)
Depot(s)Flemington Maintenance Depot
Line(s) served
Specifications
Car length20.57 m (67 ft 5 7⁄8 in)
Width2,950 mm (9 ft 8 1⁄8 in)
Height3,920 mm (12 ft 10 3⁄8 in)
Maximum speed70 mph (113 km/h)
Weight49 long tons 8 cwt (110,700 lb or 50.2 t)
Traction system4 Metropolitan-Vickers series-wound DC traction motors per motor coach, each rated at 180 hp, semi-automatic resistance control. The master controller handle allows for the manual selection of First Series (1), Full Series (2) and Parallel (3) connexions, two field weakening settings (4, 5) for high speed operation. There is also an 'emergency acceleration' button. Controller allows for the operation of Regenerative braking.
Transmission74:17 Gear ratio. traction motor geared to train wheels by pinion and crown gear
Electric system(s)1,500 V DC catenary
Current collection methodSingle-pan diamond pantograph
Braking system(s)Westinghouse Brake & Signal Co electro-pneumatic and automatic air brakes, brake blocks active on all wheels
Coupling systemautomatic coupling
Multiple workingMU capable in various formations
Track gauge1,435 mm (4 ft 8 1⁄2 in) standard gauge

Development

The New South Wales Government Railways began planning the electrification of the Main Western line over the Blue Mountains from 1949, and with that plan in full swing by the early 1950s, called tenders for 80 cars (40 motor, 20 trailer and 20 first with buffet trailer), with the contract was awarded to Commonwealth Engineering, Granville in 1954. Electric traction equipment was supplied by the Metropolitan-Vickers, Manchester. However, before construction began the order was amended with the 20 planned first with buffet cars built as full first class seating cars, after a review of the New South Wales Government Railways conducted by American firm Ebasco Services Incorporated in the mid-1950s recommended the change.[1]

The U sets were a bit different compared to the suburban single decked trains that were delivered at the same time. They were the first EMUs in NSW to feature stainless-steel construction using technology from the Budd Company, improving train acceleration and giving the trains lower maintenance costs and a longer usable life.

Delivery

The U Sets started to be delivered from June 1957, and the first sets made their first public appearances that same year. The first appearance took place on 22 June 1957 when they were hauled by electric locomotive 4612 as part of the first train to travel on the newly electrified Blue Mountains line. Normal services began on 15 September 1958, and all were in service by March 1960.[1]

The cars were numbered as:

  • Second-class Motor Cars: CF 5001-40
  • Second-class Trailer Cars: TF 6001-20
  • First-class (non-smoking) Trailer Cars: ETB 6021-40

First class travel was abolished on 1 September 1974. This saw the removal of the word "Second" on all carriages and also allowed non-first class passengers to enjoy the benefits of non-smoking carriages for the first time.

In service

The U sets initially entered service on the Main Western line to Bowenfels which was cut back to Lithgow in 1974. As the electrified network expanded they began to operate to Gosford (January 1960), Wyong (April 1982), Newcastle (June 1984), Port Kembla (February 1986) and Dapto (January 1993). The U sets were supplemented by V set double deck sets from 1970.

From the mid 1970s many had their original lift-up windows replaced by Beclawat sliding windows.

Withdrawal and preservation
Interior

Withdrawal of the sets began in 1994 as new Tangara G sets began replacing them. The last U Sets were withdrawn in November 1996.[2]

A number of U Set carriages have been preserved and some are operational:.[3] Most of the cars allocated to the Hunter Valley Railway Trust were scrapped in 2013, excepting CF 5001. Richmond Vale Railway lost cars TF 6001/02 and ETB 6026 in a bushfire in 2017.

References
  1. "U-Boats...A Tribute" Railway Digest November 1996 page 43
  2. "The Demise of the U Sets" Railway Digest March 1997 page 38
  3. "Eligible Preservation Groups Car Allocations" Railway Digest December 1998 page 39
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