The London Underground A60 and A62 Stock,[2] commonly referred to as A Stock, was a type of sub-surface rolling stock which operated on the Metropolitan line of the London Underground from 12 June 1961[3][4][5] to 26 September 2012, and on the East London line from 1977 until 22 December 2007, when it closed to be converted into London Overground (except in 1986, when one-man operation conversion of the fleet took place).
The stock was built in two batches (A60 and A62) by Cravens of Sheffield in the early 1960s, and replaced all other trains on the line.
At the time of its withdrawal in September 2012, the stock was the oldest on the Underground, having been in service for over 50 years. It was the only stock to have luggage racks, umbrella hooks and separate power and braking controls, and the last stock not to feature any automated announcements.
Development and introduction
A Stock (right) replaced F and P (left) Stocks on the Metropolitan line
The design was formulated by W S Graff-Baker of the London Passenger Transport Board, as part of the electrification of the Metropolitan line from Rickmansworth to Amersham and Chesham under the 1935–1940 New Works Programme,[6] and owes much to the smaller London Underground 1938 Stock. The project was delayed by World War II and lack of funds during the austerity period after the war. In 1946 two experimental trailers similar in exterior appearance to the production trains were built using underframes from T Stock, but they were scrapped when the trials concluded.[7] Graff-Baker died in 1952, before the trains were finally built.
When electrification commenced in 1959, London Transport placed an order for 31 A60 Stock trains to replace both T Stock on services to Watford and Rickmansworth, and locomotive-hauled services to destinations north of Rickmansworth. The first units, 5004 and 5008, entered service to Watford in June 1961.[3][4][5] The Amersham/Chesham services began later that year. London Transport later ordered 27 A62 Stock trains; these were introduced between 1961 and 1963 to replace F and P Stocks on the Uxbridge service. By December 1963, the roll-out was complete.[7]
The trains were designated as A Stock to mark the electrification of the Metropolitan line to Amersham. Four-car units were used on the East London line (then a branch of the Metropolitan line) from June 1977 to April 1985, May 1987 to 24 March 1995 and 25 March 1998 to 22 December 2007, when the line closed to become part of the London Overground network.[7]
Design
A Stock in original unpainted livery at Rayners Lane in 1994
The stock was a compromise between the needs of longer-distance "outer suburban" passengers on the outer reaches of the line and short-distance "urban" passengers over the heavily used Circle and Hammersmith & City lines. For this reason, the trailer cars have three sets of doors per car.
A distinctive feature was the use of transverse seating only, uncommon on the Underground. This is because it was designed for journeys which might last over an hour. Most of the seating was of the high-capacity transverse 3 + 2 arrangement.[8] Four tip-up seats were provided at the rear of the driving motor.[9] Despite each 8-car train seating 448 passengers,[10] the stock provided fewer seats than the locomotive-hauled and T stock trains that they replaced, but more seats than the S Stock which started to replace them on 31 July 2010.
The stock had luggage racks and umbrella hooks, the only Underground stock to have these features, despite their presence on most contemporary British Rail stock. The A stock were the last subsurface trains built with headlights positioned on the left side of the cab giving them an asymmetrical appearance. They also had three tail lights positioned underneath the cab, although one was removed during refurbishment.
A60 and A62 stocks were nearly identical in appearance. The most significant differences were the border around the destination window on A62 motor cars and the make of compressor under the trailer cars: A60 stock used the Westinghouse DHC 5A, A62 cars the Reavell TBC 38Z.[11]
At 9ft 8in (2.9m), they were the Underground's widest trains.[12] The stock was refurbished between 1994 and 1997 by Adtranz at Derby Litchurch Lane Works. Car end windows were installed, the seating was reupholstered, and the livery was updated.[10] At the time of refurbishment, the Metropolitan line had a low priority for receiving new trains.[13]
Each unit consisted of four cars: two powered driving motors at each end and two non-powered trailers in between. Each unit was further divided into two semi-permanently-coupled sets, a driving motor and trailer. In service, trains consisted of one or two four-car units coupled together.
To avoid hauling under-utilised carriages, eight-car trains were divided into their component four-car units at the end of the peak hours, with one unit often stabled. At the start of the peak hours, this unit would be coupled to another single unit to create a longer train. Although this practice was discontinued across the Underground network at the introduction of the A60 and A62 Stocks, their capabilities of carrying shorter units continued the operation. In June 1962, four-car trains began to run on the Metropolitan line. Decouplings were normally scheduled at Uxbridge or Watford in the platforms, and at Amersham in the sidings.[14]
The practice was discontinued after the 1980 summer season; with exception for the Chalfont & Latimer–Chesham shuttle, which was always operated by a single four-car unit; as it had become an operational nuisance. Uncoupling was usually cancelled during each winter as it was hazardous in leaf-fall and icy conditions. This also greatly simplified subsequent rolling stock modifications.[15]
When built it had a top speed of 70mph (110km/h) (world's fastest fourth-rail train), but from the late 1990s/early 2000s it was restricted to 50mph (80km/h) to improve reliability.
Other areas of operation
In addition to the Metropolitan line, A Stock was permitted to traverse the following sections, subject to the following restrictions:[16]
No access to the Acton Town, Barons Court, and South Harrow sidings. 15 miles per hour (24km/h) speed limit at three bridges between Acton Town and South Harrow.
Renumberings:[17] a. 5034 and 5008 swapped numbers in July 1985; new 5008 and 6008 became set 5234-6234 in September 1994, 5034 preserved at the London Transport Museum, Acton. b. set 5009-6009 renumbered 5235-6235 in September 1994. c. set 5028-6028 renumbered 5232-6232 in June 1985. d. 5036 renumbered 5116 in April 1993 (original 5116 scrapped in 1987 – collision at Kilburn, December 1984) e. set 5117-6117 renumbered 5233-6233 in August 1985; set 5037-6037 renumbered 5117-6117 in April 1993. f. 5208 renumbered 5218 in August 1992 (original 5218 scrapped in 1994 – experimental suspension) g. 5209 renumbered 5121 in March 1993 (original 5121 scrapped in 1994 – collision at Neasden depot, October 1986) Converted works vehicles: s. Sanditedispenser car. Withdrawals: 1. Underground News (588). London Underground Railway Society: 737. December 2010.{{cite journal}}: Missing or empty |title= (help) 2. Underground News (591). London Underground Railway Society. March 2011.{{cite journal}}: Missing or empty |title= (help)
Withdrawal
A60 stock train at C. F. Booth in Rotherham, waiting to be scrapped
A60 Stock reached 50 years of service on 12 June 2011.[18] The age of the stock made spare parts more difficult to obtain and vehicles had to be cannibalised to keep the rest of the stock in operation.[citation needed]
S8 Stock replaced the stock, with the first unit introduced on 31 July 2010.[19] This is similar to the S7 Stock for the District, Circle and Hammersmith & City lines; the main differences are the layout and number of seats and the provision of two sand hoppers for each rail due to the different conditions at the country end of the line.[20] On 9 October 2010, the first eight cars of A Stock were sent for scrap, units 5197 and 5173. Both units had been out of service for several months after suffering from technical faults. Main withdrawal began on 20 January 2011, with units 5006+5179 being sent to the CF Booths of Rotherham for scrapping. [citation needed]
In February 2012, the London Transport Museum began offering luggage racks from withdrawn A Stock for sale.[21]
The old and the new. A Stock (left) and S Stock (right) at Baker Street in 2011
The last train ran in passenger service on 26 September 2012, formed of 5034 + 5062.[22] The same train was used on 29 September 2012 for the final ticket-only railtour, organised by the London Transport Museum. It ran from Moorgate along the entire Metropolitan line, including Watford, Amersham, Aldgate, Uxbridge, Chesham and the Watford North curve. The tour ended at Wembley Park: on the final stretch from Finchley Road, the train was unofficially recorded at 74mph. One of the driving motor cars, 5034, was part of the first (as 5008) and also the last A Stock train, giving it a life of over 51 years. It was sent to Northwood sidings on 8 October 2012 and loaded onto lorries for disposal. The historical age and significance of No.5034 saw it taken to the Acton Museum Depot for preservation but vehicle 5062 was scrapped.
The stock survived in engineering use as a Rail Adhesion Train until March 2018, when it too was scrapped, giving the stock a total life of 57 years. It had been last used in December 2017, when it had developed a fault and repairs were deemed unnecessary, as it was planned to be scrapped after the end of the year anyway, being replaced by a D78 stock unit.[23]
The night of 24 May 2018 was the final time an A stock unit ran under its own power on the London Underground network. Set 5234/6234/6235/5235 worked train 710 from Neasden Depot to Ealing Common Depot. The set was subsequently removed from the adjacent London Transport Museum depot at Acton Town by road for disposal on 17 and 18 July 2018.
The stock outlasted many former British Rail EMUs: the Scottish Class 303 managed 43 years, the Class 309 Clacton Express units 38 years and British Rail Class 312 only 28 years. The former Southern Region 4CIG and 4CEP managed 46 and 49 years respectively. The stock was one of Britain's longest-serving types of train, although falling short of the service length of the ex-1938 Stock, which were still in use on the Isle of Wight 81 years after construction at the time of their withdrawal in 2021, the Class 487 units which pushed through to just under 53 years, or the 81 years of the first-generation Glasgow Subway rolling stock between 1896 and 1977.[24]
1 2 Hardy, Brian (1988). London Underground Rolling Stock (11thed.). Capital Transport. p.35. ISBN0-904711-94-3.
1 2 Hardy, Brian (2002). London Underground Rolling Stock (15thed.). Capital Transport. p.36. ISBN1-85414-263-1. The first train of A60 stock entered passenger service on 12 June 1961 (units 5004 and 5008).
1 2 Metropolitan Line No 2 Section Working Timetable No 189 12.6.61, London Underground, 1961
The Metropolitan line, colloquially known as the Met, is a London Underground line between Aldgate in the City of London and Amersham and Chesham in Buckinghamshire, with branches to Watford in Hertfordshire and Uxbridge in Hillingdon. Printed in magenta on the tube map, the line is 41.4 miles (66.7 km) in length and serves 34 stations. Between Aldgate and Finchley Road, the track is mostly in shallow "cut and cover" tunnels, apart from short sections at Barbican and Farringdon stations. The rest of the line is above ground, with a loading gauge of a similar size to those on main lines. Just under 94 million passenger journeys were made on the line in 2019.
Amersham is a London Underground station in Amersham in the Chiltern district of Buckinghamshire, England which is also used by National Rail services.
Chalfont & Latimer is a London Underground and National Rail station in Travelcard Zone 8 on the Metropolitan line, in Buckinghamshire. It also serves the Chiltern Railways line to Aylesbury. Chalfont & Latimer station is located just before the junction for trains to Chesham. The station serves Chalfont St Giles, Chalfont St Peter, Little Chalfont and Latimer. It is located in Little Chalfont. It opened as "Chalfont Road" on 8 July 1889 but changed to the present name from 1 November 1915. The station is a good location to alight from to explore the Chess Valley.
Chorleywood is a London Underground and National Rail station in Travelcard Zone 7 on the Metropolitan line. The village of Chorleywood is in the Three Rivers district of Hertfordshire about 20 miles (32 km) from London. Chorleywood station is also served by Chiltern Railways, which runs trains from London Marylebone station through to Aylesbury.
London Underground rolling stock includes the electric multiple-unit trains used on the London Underground. These come in two sizes, smaller deep-level tube trains and larger sub-surface trains of a similar size to those on British main lines, both running on standard gauge tracks. New trains are designed for the maximum number of standing passengers and for speed of access to the cars.
The British Rail Class 485 and British Rail Class 486 electrical multiple units were originally built for the London Electric Railway from 1923-31 as its 'Standard' tube stock. They were purchased by British Rail in 1967 and transported to the Isle of Wight to work 'mainline' services on the newly electrified Ryde to Shanklin line, where they worked for an additional quarter of a century. At the time of their purchase the units had already worked for over 40 years on the London Underground, but their introduction allowed the last steam locomotives on the line to be withdrawn.
The T Stock was a series of electric trains originally built in various batches by Metropolitan-Vickers and the Birmingham Railway Carriage and Wagon Company for the Metropolitan Railway in 1927–31 for use on electric services from Baker Street and the City to Watford and Rickmansworth, though rarely some worked on the Uxbridge branch.
The London Underground O and P Stock electric multiple units were used on the London Underground from 1937 to 1981. O Stock trains were built for the Hammersmith & City line, using metadyne control equipment with regenerative braking, but the trains were made up entirely of motor cars and this caused technical problems with the traction supply so trailer cars were added. P Stock cars were built to run together with the O Stock cars now surplus on Metropolitan line Uxbridge services. The trains had air-operated sliding doors under control of the guard; the O Stock with controls in the cab whereas the P Stock controls in the trailing end of the motor cars. The P Stock was introduced with first class accommodation, but this was withdrawn in 1940.
Rickmansworth is an interchange railway station in Rickmansworth, Hertfordshire, northwest of central London, served by the London Underground Metropolitan line and by Chiltern Railways. It is one of the few London Underground stations beyond Greater London and as a consequence is in Travelcard Zone 7. The station is a good location to alight from to explore the Chess Valley.
Northwood is a station on the Watford branch of the Metropolitan line, in Travelcard Zone 6. The station is located just off the main road through the town, Green Lane. The line serves as the sole continuous link between the town of Northwood and London, key for a region known as Metro-Land.
The London Underground C69 and C77 Stock, commonly referred to as the C Stock, was a type of sub-surface rolling stock used on the Circle, District and Hammersmith & City lines of the London Underground between 1970 and 2014. They were replaced by the S7 Stock.
The London–Aylesbury line is a railway line between London Marylebone and Aylesbury, going via the Chiltern Hills; passenger trains are operated by Chiltern Railways. Nearly half of the line is owned by London Underground, approximately 16 miles (26 km) – the total length of the passenger line is about 39 miles (63 km) with a freight continuation.
Rolling stock used on the London Underground and its constituent companies has been classified using a number of schemes. This page explains the principal systems for the rolling stock of the Central London Railway (CLR), the Underground Electric Railways Company of London (UERL), the District Railway (DR) and the Metropolitan Railway (MR). For information about individual classes of locomotives and other rolling stock, see London Underground rolling stock.
The New Works Programme of 1935–1940 was the major investment programme delivered by the London Passenger Transport Board (LPTB), commonly known as London Transport, which had been created in 1933 to coordinate underground train, tram, trolleybus and bus services in the capital and the surrounding areas. The programme was to develop many aspects of the public transport services run by the LPTB and the suburban rail services of the Great Western Railway (GWR) and London and North Eastern Railway (LNER). The investment was largely backed by government assistance as well as by the issuing of financial bonds and was estimated to cost £42,286,000 in 1936.
The London Underground F Stock was built in 1920 and 1921 for the District Railway by the Metropolitan Carriage, Wagon and Finance Company. They were partly funded by the government as part of an initiative to help British industry recover from World War I. One hundred steel-bodied cars were built: 40 driving motors, 12 control trailers and 48 trailers with the first train entering service on 23 December 1920. The cars were built with manually-operated sliding doors.
The Chesham branch is a single-track railway branch line in Buckinghamshire, England, owned and operated by the London Underground. It runs from a junction at Chalfont & Latimer station on the Metropolitan line for 3.89 miles (6.26 km) northwest to Chesham. The line was built as part of Edward Watkin's scheme to turn his Metropolitan Railway (MR) into a direct rail route between London and Manchester, and it was envisaged initially that a station outside Chesham would be an intermediate stop on a through route running north to connect with the London and North Western Railway (LNWR). Deteriorating relations between the MR and LNWR led to the MR instead expanding to the northwest via Aylesbury, and the scheme to connect with the LNWR was abandoned. By this time much of the land needed for the section of line as far as Chesham had been bought. As Chesham was at the time the only significant town near the MR's new route, it was decided to build the route only as far as Chesham, and to complete the connection with the LNWR at a future date if it proved desirable. Local residents were unhappy at the proposed station site outside Chesham, and a public subscription raised the necessary additional funds to extend the railway into the centre of the town. The Chesham branch opened in 1889.
London's Metropolitan Railway (MR) amalgamated with other underground railways, tramway companies and bus operators on 1 July 1933, to form the London Passenger Transport Board (LPTB); the MR became the Board's Metropolitan line.
Departmental locomotives on the London Underground consist of vehicles of a number of types which are used for engineering purposes. These include battery locomotives, diesel locomotives, electric locomotives, sleet locomotives, pilot motor cars and ballast motor cars. Details of the first four types are covered elsewhere. Pilot motor cars and ballast motor cars are generally vehicles which have been withdrawn from passenger service, but continue to be used by the engineering department. Pilot motor cars are used to move other vehicles around the system, while ballast motor cars are used to haul ballast trains and engineering trains.
Acton Works is a London Underground maintenance facility in West London, England. It is accessed from the District line and Piccadilly line tracks to the east of Acton Town station, and was opened in 1922. It was responsible for the overhaul of rolling stock, and gradually took on this role for more lines, until the formation of the London Passenger Transport Board in 1933, when all major overhauls of underground vehicles were carried out at the works. By 1985, when rolling stock had become more reliable and maintenance intervals had increased, this function was devolved to depots on each line. Subsequently, Acton continued to overhaul major items after they had been removed from trains at the depots, and tendered for work, which included the conversion of the A60 Stock to One Person Operation. It is likely to be reorganised and expanded to house the departments displaced from Lillie Bridge Depot which is being demolished as part of the redevelopment of Earls Court Exhibition Centre.
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