The SL C20 is a type of subway train used in the

Stockholm metro The Stockholm metro ( sv, Stockholms tunnelbana) is a rapid transit system in Stockholm, Sweden. The first line opened in 1950, and today the system has 100 stations in use, of which 47 are underground and 53 above ground. There are three colou ...

Sweden Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic country located on ...

. Between 1997 and 2004, 271 3-car sets, numbered 2000–2270, were delivered to Stockholm by the former

Kalmar Verkstad Kalmar Verkstad AB (''KVAB'') was a Swedish train and automobile manufacturer in Kalmar, Sweden that made the Tjorven and Terminal. KVAB was founded in 1902 and closed in 2005 by Bombardier. History and products KVAB's core business was trai ...

, owned by Adtranz, later acquired by

Bombardier Transportation Bombardier Transportation was a Canadian-German rolling stock and rail transport manufacturer, headquartered in Berlin, Germany. It was one of the world's largest companies in the rail vehicle and equipment manufacturing and servicing industry ...

. The C20 is a completely new design and therefore is not compatible with other train types in the system. At , each carriage is longer than the previous train types. To save cost and weight, each unit has only four

bogie A bogie ( ) (in some senses called a truck in North American English) is a chassis or framework that carries a wheelset, attached to a vehicle—a modular subassembly of wheels and axles. Bogies take various forms in various modes of transp ...

s. The middle car has two bogies. The end parts consist of one bogie each and are connected to the central portion via a semi-trailer-direction. Trolley subframes are made of stainless steel, and are less susceptible to corrosion. When the C20 was sold as the ''Vagn 2000'' ( en, Wagon 2000), it was marketed as the subway car of the future. All C20 coaches have been given their own names, all proposed by private individuals. Many of the names are linked to Stockholm; for example, coach no. 2001 was christened

Birger Jarl Birger Jarl, also known as ''Birger Magnusson'' (21 October 1266), was a Swedish statesman, ''jarl'', and a member of the House of Bjelbo, who played a pivotal role in the consolidation of Sweden. Birger also led the Second Swedish Crusade, whi ...

Refurbishment

The C20F and the 270 3-car C20 sets will undergo a mid-life refurbishment at the Bombardier Transportation factory in

Västerås Västerås ( , , ) is a city in central Sweden on the shore of Mälaren, Lake Mälaren in the province of Västmanland, west of Stockholm. The city had a population of 127,799 at the end of 2019, out of the municipal total of 154,049. Västerås ...

Västmanland Västmanland ( or ), is a historical Swedish province, or ''landskap'', in middle Sweden. It borders Södermanland, Närke, Värmland, Dalarna and Uppland. Västmanland means "(The) Land of the Western Men", where the "western men" (''västerm ...

between 2019 and 2023. During this period, the refurbished sets will be referred to as C20U or C25. The refurbishment will increase the standing capacity of all sets by converting one side of each car to all-longitudinal seating instead of the all-transverse seating currently in use, as well as removing a portion of seats in each end of a carriage to create spaces for wheelchairs and strollers. All seat upholstery will also be replaced and new yellow upholstery to designate priority seating will also be introduced, and each refurbished C20 set will be retrofitted with 16 CCTV cameras, an increase of 6 such cameras in each car prior to refurbishment. File:C25-interior.jpg File:C25-display.jpg File:SL C20U (15).jpg File:SL C20U (9).jpg File:SL C20U (3).jpg File:SL C20U (1).jpg File:SL C20U (7).jpg File:SL C20U (12).jpg File:C20 Stockholm Interior.jpg

C20F

The C20F is a related prototype, built with "FICAS" technology – a highly innovative modular construction that uses a stainless steel skin bonded to a rigid composite core. This construction results in an extremely thin wall (25mm instead of the C20's 100mm), thereby creating a more spacious interior without altering the outer profile. The C20F has

air conditioning Air conditioning, often abbreviated as A/C or AC, is the process of removing heat from an enclosed space to achieve a more comfortable interior environment (sometimes referred to as 'comfort cooling') and in some cases also strictly controlling ...

in both the driver's cab and the passenger compartments, whereas the C20 has air conditioning in the driver's cab only. The exterior of the C20F differs by having smooth trolley sub-frames instead of the corrugated trolley sub-frames present in the C20. The C20F car assigned set 2000 and originally christened Incognito, then rechristened Elvira on 22 May 2012, when C20 set 2012, previously christened Elvira, was rechristened the Estelle on the occasion of

Princess Estelle Princess is a regal rank and the feminine equivalent of prince (from Latin ''princeps'', meaning principal citizen). Most often, the term has been used for the consort of a prince, or for the daughter of a king or prince. Princess as a subst ...

's baptism.C20 2012 byter namn
/ref> The C20F operates on the Green Line of the Stockholm metro. File:C20F 2000 Elvira.jpg, The C20F train at File:C20Fi.jpg, C20F Interior File:SL C20F 01.jpg, C20F Interior File:SL C20F 03.jpg, C20F Interior File:SL C20F 05.jpg, C20F side-by-side with C20

Notes

References

External links

C20 info page (partially in Swedish)

C20F info page (partially in Swedish)

C20/C20F refurbishment project (in Swedish)
{{Swedish railway stock Bombardier Transportation multiple units Multiple units of Sweden Stockholm metro 750 V DC multiple units