M7 (railcar)

M7
M7
	LIRR M7 #7824 arriving at Plandome
	Metro-North M7A stopped at Dobbs Ferry station
In service	M7: 2002–present; M7A: 2004-present;
Manufacturer	Bombardier Transportation
Replaced	All remaining M1s; All remaining ACMUs
Constructed	1999–2006
Number built	1,172 cars; Long Island Rail Road: 836 cars; Metro-North Railroad: 336 cars;
Number scrapped	M7: 8; M7A: 2[citation needed];
Formation	Married pairs
Fleet numbers	LIRR: 7001–7836; MNCR: 4000–4335;
Capacity	110 seated (A car); 101 seated (B car);
Operators	MTA (LIRR and MNCR)
Specifications
Car body construction	Stainless steel
Car length	85 ft (25,908 mm)
Width	10 ft 6 in (3,200 mm)
Height	13 ft 3 in (4,039 mm)
Floor height	4 ft 3 in (1,295 mm)
Wheel diameter	36 in (914 mm)
Wheelbase	8 ft 6 in (2,591 mm)
Maximum speed	100 mph (161 km/h) (design); 80 mph (129 km/h) (service);
Weight	128,300 lb (58,200 kg) (A car); 125,300 lb (56,800 kg) (B car);
Traction system	Mitsubishi Electric IGBT–VVVF
Traction motors	8 × Mitsubishi 265 hp (198 kW) asynchronous 3-phase AC; M7: MB-5088-A; M7A: MB-5088-A2;
Power output	2,120 hp (1,580 kW) per unit
Acceleration	2 mph/s (3.2 km/(h⋅s))
Deceleration	3 mph/s (4.8 km/(h⋅s)) (service); 3.2 mph/s (5.1 km/(h⋅s)) (emergency);
Electric system(s)	Third rail, 750 V DC
Current collector(s)	Contact shoe
UIC classification	Bo′Bo′+Bo′Bo′
AAR wheel arrangement	B-B+B-B
Braking system(s)	Regenerative / Pneumatic
Safety system(s)	ATC and Pulse code cab signaling
Coupling system	Budd Pin and Cup coupler
Track gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge

The M7 is an electric multiple unit railroad car built by Bombardier for use on the MTA's Long Island Rail Road (LIRR) and Metro-North Railroad. With delivery beginning in 2002, the M7 replaced the M1 railcars on both railroads as well as the ACMUs on Metro-North. The cars built for Metro-North were designated as the M7As, and contain minor differences from the M7s found on the LIRR. A total of 1,172 M7 cars were built for the two railroads.^[7]

^ "M-7 Electric Multiple Unit - New York, USA". Bombardier. Archived from the original on 2018-01-21. Retrieved 2023-02-04.
^ Mitsubishi Electric 'Connect' Newsletter, Summer 2006
^ 25 kV AC ELECTRIFICATION PROJECT ASSESSMENT OF ELECTRIC MULTIPLE UNITS PASSENGER RAIL CARS Page 21-25
^ APPENDIX 6: Design Data for Electric Multiple Units (EMU) Page 3
^ ^a ^b "Overhaul of M7 and M8 Railcar Traction Motors". New York Bids. MTA - Metro-North Railroad. 12 August 2020.
^ "Bombardier Transportation Seminar" (PDF). October 11, 2016. Retrieved August 29, 2021.
^ Solomon, B. (2016). Field Guide to Trains: Locomotives and Rolling Stock. Voyageur Press. p. 75. ISBN 978-0-7603-5126-0. Retrieved December 16, 2018.

[1] "M-7 Electric Multiple Unit - New York, USA". Bombardier. Archived from the original on 2018-01-21. Retrieved 2023-02-04.

[2] Mitsubishi Electric 'Connect' Newsletter, Summer 2006

[3] 25 kV AC ELECTRIFICATION PROJECT ASSESSMENT OF ELECTRIC MULTIPLE UNITS PASSENGER RAIL CARS Page 21-25

[4] APPENDIX 6: Design Data for Electric Multiple Units (EMU) Page 3

[5088A-5] "Overhaul of M7 and M8 Railcar Traction Motors". New York Bids. MTA - Metro-North Railroad. 12 August 2020.

[BT-seminar-6] "Bombardier Transportation Seminar" (PDF). October 11, 2016. Retrieved August 29, 2021.

[Solomon_2016_p._75-7] Solomon, B. (2016). Field Guide to Trains: Locomotives and Rolling Stock. Voyageur Press. p. 75. ISBN 978-0-7603-5126-0. Retrieved December 16, 2018.

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