SR Class SL

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LB&SCR South London stock
Elevated Electric Train at Wandsworth c 1909.jpg
SL stock at Wandsworth c.1909
Manufacturer Metropolitan Amalgamated Carriage & Wagon Co. Ltd
Replaced 1928
Constructed 1909
Refurbishment Rebuilt as DC units 1928/9
Number built Eight 3-car sets
later rebuilt as 16 2-car sets
Formation 3 cars sets: DMBT-TF-DMBT
later 2 car sets: DMBT-DTC
Capacity 3-sets: 74 First, 144 Third
Operator London, Brighton and South Coast Railway,
Southern Railway
Specifications
Car length 63 ft 7 in (19.38 m)
Width 9 ft 3 in (2.82 m)
Weight DMBT: 54 long tons (54.9 t)
TF: 30 long tons (30.5 t)
DTC: 20.40 long tons (20.7 t)
Power output 3-sets: 920 hp (686 kW);
2-sets: 460 hp (343 kW)
Transmission Four Winter Eichberg traction motors of 115 hp (86 kW) each.
Electric system(s) 6.7 kV AC
Current collection method Bow collector
Track gauge 4 ft 8 12 in (1,435 mm)

The Southern Railway (SR) in the UK gave the designation SL to the fleet of AC overhead electric multiple units used on the line between Victoria and London Bridge station. These had been built by the London, Brighton and South Coast Railway in 1909, but with the abandonment of the Elevated Electric service in 1928 they were converted to DC third rail units.

Construction[edit]

The SL (South London stock) units were built in 1909 for use on the LBSCR AC overhead electrified lines in South London. This stock comprised eight three-car units, originally formed Driving Motor Brake Third + Trailer First + Driving Motor Brake Third. They were built by the Metropolitan Amalgamated Carriage & Wagon Company at Birmingham and each motor coach had four 115 horsepower (86 kW) Winter Eichberg motors.

The Trailer First cars were later removed and used as locomotive-hauled stock, from when the driving cars were paired with former loco-hauled coaches converted to Driving Trailer Composite cars.

After the replacement of the AC overhead equipment by the standard SR 660 V DC third-rail system on 17 June 1928,[1] these units were rebuilt. The Driving Motor cars were paired together again to form eight units designated 2SL. The Trailer First cars (which had been out of EMU stock for nearly twenty years) were included in this programme, and were rebuilt into Driving Motor and Driving Trailer pairs to form four units designated 2Wim, for use on the Wimbledon-West Croydon line.

Formations[edit]

The LB&SCR purchased sufficient cars for 8 permanent sets, numbered 1E to 8E. However, later Brighton practise was to dispense with fixed sets.

Type LB&SCR No. SR No.
DMBT 3201/03/04/06/07/09/10/12/13/15/16/18/19/21/22/24 8601–8616
TF 3202/05/08/11/14/17/20/23 7644–7651
DTC 3225–3230, 4057–4060, 4065–4068 9811–9824

Goslin lists, on page 40, 14 driving composites for the South London line in stock at the end of 1914 but if these were formed into 16 2 car units then there must be another 2 coaches unlisted. The Southern Electric Group web site states '14 DTCs were converted in 1910-12 from former locomotive hauled stock' this implies only 14 2 car units with 2 DMBT spare.

References[edit]

  1. ^ Moody, G.T. (1968). Southern Electric 1909-1968. London: Ian Allan. p. 25. 
  • Gould, David (1995). Bogie Carriages of the London, Brighton and South Coast Railway. Headington, Oxford: The Oakwood Press. pp. 168–190. ISBN 0-85361-470-9. 
  • Goslin, Geoff (2002). London's Elevated Electric Railway. Colchester: Connor & Bulter Ltd. ISBN 0-947699-35-X. 
  • Golding, Brian (2009). A Pictorial Record Of Southern Electric Units. Corhampton, Southampton: Noodle Books. ISBN 978-1-906419-34-9. 

Southern Electric Group; SEG Historical Features LBSCR A.C. Fleets