Metrovagonmash Ečs

Ečs (81-709) is a type of Soviet metro rolling stock for Prague Metro that derives from the Metrowagonmash E series.^[1]

Metrowagonmash Ečs (81-709)
In service	1974–1997
Manufacturer	Metrowagonmash
Assembly	Mytishchi, Russia
Constructed	1972–1976
Entered service	1974
Scrapped	1994–1997
Number built	85
Number preserved	4
Number scrapped	79 (unknown fate of 1020 and 1031)
Successor	81-717/714
Formation	3–5 cars
Fleet numbers	1001–1085
Capacity	262
Operators	DPP
Depots	Kačerov (C)
Lines served	Line C
Specifications
Car length	19,206 mm (63 ft 1⁄8 in)
Width	2,712 mm (8 ft 10+3⁄4 in)
Height	3,662 mm (12 ft 3⁄16 in)
Floor height	128 cm (50 in)
Doors	8 (4 by 2 sides) + 1 driver door on the left hand side
Wheel diameter	780 mm (31 in)
Wheelbase	2,100 mm (83 in) (bogie)
Maximum speed	90 km/h (56 mph)
Weight	32,500 kg (71,650 lb)
Power output	288 kW (386 hp)
Acceleration	1.2 m/s2 (3.9 ft/s2; 4.3 km/(h⋅s))
Electric system(s)	750 V DC third rail
Current collector(s)	contact shoe
Braking system(s)	Westinghouse brake (0–10km/h), dynamic brake (10–80km/h), additional emergency brake
Safety system(s)	ARS
Coupling system	Scharfenberg coupler
Track gauge	1,435 mm (4 ft 8+1⁄2 in)
Notes/references
20 cars (1051–1070) were not fitted with the ARS safety system.

History

Ečs in Prague metro station Háje.

85 cars were built by Metrowagonmash in Mytishchi near Moscow between 1972 and 1976. The first six cars were delivered in 1973 for test runs, further 44 until 1974, when the trains entered service, firstly as three car sets. 20 cars followed in 1975 which had no tachographs, train radio, or ARS safety system and were used to extend the existing sets to the length of four cars. The last 15 cars were delivered in 1976.^[2]

In 1992, car 1031 was sold to Siemens to be used as an experimental vehicle for 1500 V DC voltage, 560 kW power output and current collection via overhead wires. In 1994, car 1020 was withdrawn and planned to be rebuilt by ČKD in cooperation with Škoda. The project wasn't realised.^[2]

The remaining cars were withdrawn between 1994 and 1997.^[2]

Four of the 85 cars have been preserved, of which three (1083, 1084, 1085) are kept in Kačerov (C) depot for special occasions, and one (1009) is preserved in the Prague Public Transport Museum in Střešovice.^[2][3]