London Underground L Stock

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L Stock
Manufacturer UCC
In service 1931–1971
Length per car 49 ft 8 in (15.14 m)
Width 8 ft 11 516 in (2,726 mm)
Height 12 ft 3 12 in (3,746 mm)
Weight 34.08 long tons (34.63 t; 38.17 short tons)
Seating 42
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London Underground L Stock was a clerestory-roofed rail stock built for the District line in 1932 and subsequently absorbed into the London Underground Q Stock, being redesignated Q31 Stock.

The L Stock trains were built to provide additional rolling stock for the eastward extension of the District Line from Barking to Upminster. Two new electrified tracks were added parallel to the existing steam-operated LMS lines, including several new stations such as Upminster Bridge.

Forty-five cars were built by the Union Construction Company, eight were driving motor cars and the rest were trailers. The eight motor cars, numbered 700-714 (even numbers only), were initially owned by the London Midland and Scottish Railway.

The L Stock was based on the 1927 K Stock.

The conversion from L Stock to Q31 Stock took place in the late 1930s, with the major modification being the conversion of the hand-operated sliding doors to air operation. The last Q Stock trains were withdrawn in 1971.