SR Class CP
Encyclopedia
The Southern Railway gave the designation CP to the fleet of AC electric multiple unit
s used on the former London, Brighton and South Coast Railway
lines in the Crystal Palace area.
AC overhead electrification to Crystal Palace and the surrounding area. This stock comprised some 90 cars, which were used in three-car formations, usually (Driving Trailer Composite+Driving Motor Brake Third+Driving Trailer Composite).
Thirty motor coaches and 30 driving trailers were built by the Metropolitan Amalgamated Carriage and Wagon Co. Ltd.
in 1911. Each motor coach had four 150 hp Winter Eichberg motors
. A further 26 driving trailers were built at the LBSC's Lancing Carriage Works
. In 1912, four additional motor and trailer pairs were delivered by MAC&W’s successor, the Metropolitan Carriage, Wagon and Finance Company. Lancing Works built eight more trailers the following year.
After the replacement of the AC overhead equipment by the 660 V DC third rail system adopted as standard by the SR, the carriages that formed these units were rebuilt accordingly.
Electric multiple unit
An electric multiple unit or EMU is a multiple unit train consisting of self-propelled carriages, using electricity as the motive power. An EMU requires no separate locomotive, as electric traction motors are incorporated within one or a number of the carriages...
s used on the former London, Brighton and South Coast Railway
London, Brighton and South Coast Railway
The London, Brighton and South Coast Railway was a railway company in the United Kingdom from 1846 to 1922. Its territory formed a rough triangle, with London at its apex, practically the whole coastline of Sussex as its base, and a large part of Surrey...
lines in the Crystal Palace area.
Construction
The CP (Crystal Palace stock) units were built in 1911-1913 to provide the electric train stock required for the LBSCRLondon, Brighton and South Coast Railway
The London, Brighton and South Coast Railway was a railway company in the United Kingdom from 1846 to 1922. Its territory formed a rough triangle, with London at its apex, practically the whole coastline of Sussex as its base, and a large part of Surrey...
AC overhead electrification to Crystal Palace and the surrounding area. This stock comprised some 90 cars, which were used in three-car formations, usually (Driving Trailer Composite+Driving Motor Brake Third+Driving Trailer Composite).
Thirty motor coaches and 30 driving trailers were built by the Metropolitan Amalgamated Carriage and Wagon Co. Ltd.
Metro Cammell
The Metropolitan Cammell Carriage and Wagon Company was a Birmingham, England based manufacturer of railway carriages and wagons, based in Saltley and subsequently Washwood Heath....
in 1911. Each motor coach had four 150 hp Winter Eichberg motors
Repulsion motor
A repulsion motor is a type of electric motor for use on alternating current. It was formerly used as a traction motor for electric trains but has been superseded by other types of motors and is now only of historical interest. Repulsion motors are classified under Single Phase motors...
. A further 26 driving trailers were built at the LBSC's Lancing Carriage Works
Lancing Carriage Works
Lancing carriage and wagon works was a railway carriage and wagon building and maintenance facility in the village of Lancing in the county of West Sussex in England from 1911 until 1965.-History under the LB&SCR:...
. In 1912, four additional motor and trailer pairs were delivered by MAC&W’s successor, the Metropolitan Carriage, Wagon and Finance Company. Lancing Works built eight more trailers the following year.
After the replacement of the AC overhead equipment by the 660 V DC third rail system adopted as standard by the SR, the carriages that formed these units were rebuilt accordingly.
Formations
The LB&SCR originally did not buy sufficient stock for 30 sets, on the grounds that the trailers cars would be quicker to overhaul than the motor cars. Fixed formations were not used, and as the Motor cars had cabs, the CP stock could be used in trains of two to six vehicles.| Year | Builder | Type | LB&SCR No. | SR No. |
|---|---|---|---|---|
| 1911 | MAC&W | DMBT | 3231–3260 | 8567–8595 |
| 1911 | MAC&W | DTC | 4001–4030 | 9825–9854 |
| 1911 | Lancing | DTC | 4031–4056 | 9855–9878 |
| 1912 | MCW&F | DMBT | 3261–3264 | 8597–8600 |
| 1911 | MAC&W | DTC | 4061–4064 | 9881–9884 |
| 1913 | Lancing | DTC | 4069–4076 | 9885–9892 |