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| M and N Stock | |
|---|---|
| In service | 1935–1971 |
| Manufacturer | BRC&W (M Stock) and Metro-Cammell (N Stock) |
| Specifications | |
| Car length | 50 ft (15.24 m) |
| Width | 8 ft 11+5⁄16 in (2.726 m) |
| Height | 12 ft 3+1⁄2 in (3.747 m) |
| Weight | DM 34.03 long tons (34.58 t; 38.11 short tons) T 23.82 long tons (24.20 t; 26.68 short tons) |
| Seating | 42 |
| Notes/references | |
 London transport portal | |
The London Underground M Stock and N Stock were similar designs of rolling stock built in 1935. As the new cars were urgently required they were based on existing L Stock. Several years after construction both types were absorbed into the Q Stock. The last of these trains were withdrawn in 1971.
London Underground M Stock
London Underground M Stock was a clerestory-roofed rail stock built for the Hammersmith & City line in 1935 and subsequently absorbed into the London Underground Q Stock, being redesignated Q35 Stock. Twenty-eight cars were built in 1935 by Birmingham Railway Carriage and Wagon Company: fourteen were driving motor cars and the rest were trailers. All the driving motor cars were converted to trailers between 1947 and 1955.
The M Stock was the first surface stock to be delivered with air-operated doors.
Upon conversion to Q Stock, all the cars were transferred to the District line (with the Hammersmith and City Line services being operated from 1938 onwards by new trains of O Stock).
London Underground N Stock
London Underground N Stock was a type of clerestory-roofed stock built in 1935 and subsequently absorbed into the London Underground Q Stock, being redesignated Q35 Stock. Twenty-six cars, all trailers, were built in 1935 by Metropolitan Cammell.
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