MF 77

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MF 77
A refurbished MF 77 at Maison Blanche on Line 7, en route to Porte de la Villette
Interior of a refurbished MF 77
In service	26 September 1978–present
Manufacturer	Alstom, CEM-Oerlikon, Creusot-Loire, ANF-Industry, Jeumont-Schneider
Replaced	Sprague-Thomson
Constructed	1976–1986
Refurbished	2007 (Line 13) 2019 (Line 7) 2023 (Line 8)
Number built	985 cars (197 trainsets)
Successor	MF 19
Formation	5 cars per trainset
Capacity	574 per trainset
Operators	RATP
Lines served
Specifications
Car body construction	Aluminium alloy
Train length	77.5 m (254 ft 3 in)
Car length	Motor car: 15.48 m (50 ft 9 in)
Width	2.46 m (8 ft 1 in)
Height	3.46 m (11 ft 4 in)
Doors	3 pairs per side, per car
Maximum speed	Design: 100 km/h (62 mph) Service: 70 km/h (43 mph)
Weight	Trainset: 131 t (289,000 lb) Motor car: 29.5 t (65,000 lb) Trailer car: 21.5 t (47,000 lb)
Traction system	Jeumont-Schneider thyristor chopper Cars 1–187: analog control Cars 188–197: microprocessor control
Traction motors	MF5/TAO 679/4ELH 3054
Power output	1,590 kW (2,130 hp)
Transmission	Cardan shaft and axle mounted gear wheel, 1:4.445 ratio
Acceleration	3.2 km/(h⋅s) (2.0 mph/s)
Deceleration	3.6 km/(h⋅s) (2.2 mph/s)
Electric system(s)	Third rail, 750 V DC
Current collector(s)	Contact shoe
Bogies	MTE Cast steel, H shape[1]
Braking system(s)	Dynamic, disc
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge

The MF 77 (French: Métro Fer appel d'offres de 1977; English: Steel-wheeled metro ordered in 1977) is a steel-wheeled variant of the rolling stock used on the Paris Métro. First used in 1978, it now runs on Lines 7, 8, and 13.

Unlike previous models, the MF 77 was designed for travel into the immediate suburbs of Paris, and as a result has a maximum speed of 100 km/h (62 mph) which has yet to be fully utilized. In addition, it sports a new, curved silhouette with a wider midsection. Its original exterior colors, blue and white, led passengers to refer to it as le métro blanc, or white metro.