BVG Class F

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BVG Class F
An F79 train at Zoologischer Garten on the U9
Interior of an F87 train (before refurbishment)
In service	1973–present
Manufacturer	ABB Henschel, Adtranz, AEG, Orenstein & Koppel, Siemens, Waggon Union
Constructed	1973–1994
Entered service	1974 (F74) 1976 (F76) 1980 (F79.1) 1979 (F79.2) 1980 (F79.3) 1984 (F84) 1986 (F87) 1990 (F90) 1992 (F92)
Refurbished	2012–2018 (F74) 2015–2018 (F76) 2009 (several F79) early 2000s (F84 and F87)
Scrapped	2018–2021 (F79.1, F79.2) 2004–2008 (F79.3)
Number built	257
Number in service	208
Number preserved	3
Number scrapped	46 5 (F74) 1 (F76) 17 (F79.1) 19 (F79.2) 4 (F79.3)
Formation	Double units
Fleet numbers	2500/01–2554/55 (F74) 2556/57–2636/37 (F76) 2638/39–2670/1 (F79.1) 2672/73–2710/11 (F79.2) 2712/13–2722/23 (F79.3) 2724/25–2800/01 (F84) 2802/03–2842/43 (F87) 2844/45–2902/03 (F90) 2904/05–3012/13 (F92)
Capacity	235 (F74, F76) 250 (F79.1, F79.2) 246 (F79.3) 244 (F84–F92)
Operators	Berliner Verkehrsbetriebe
Lines served	U5, U6, U7, U8 and U9
Specifications
Car body construction	Aluminium
Train length	32.1 m (105 ft 3+3⁄4 in) (over anticlimbers)
Width	2.65 m (8 ft 8+5⁄16 in)
Height	3.425 m (11 ft 2+13⁄16 in)
Doors	12 side doors per unit (6 per side)
Maximum speed	72 kilometres per hour (45 mph)
Weight	F74: 38,100 kg (83,996 lb) F76: 37,800 kg (83,335 lb) F79.1 and F79.2: 39,400 kg (86,862 lb) F79.3: 42,600 kg (93,917 lb) F84: 43,100 kg (95,019 lb) F87: 42,700 kg (94,137 lb) F90 and F92: 41,100 kg (90,610 lb)
Prime mover(s)	Electric motor
Electric system(s)	750 V DC third rail
Current collector(s)	Contact shoe
Safety system(s)	Dead man's switch, Magnetic train stop
Coupling system	Scharfenberg

The BVG Class F is a train type designed for the large profile routes on the Berlin U-Bahn. 257 units (each consisting of two cars) were constructed between 1973 and 1994 in seven batches. These batches differ in terms of design and technical equipment.

The prototype unit 2500/01 underwent testing from 1973 on. After successful trial runs, regular production started the year after. 112 double units (batches F74 to F79) were delivered to West Berlin until the end of 1981, replacing the remainder of the pre-war Class C. 145 additional units, featuring various improvements, were built between 1984 and 1994 and partly replaced trains from the former East Berlin network after the German reunification.

Being built from 1995 to 2002 the BVG Class H became the successor of the Class F.