Class 507.

BDMSO-TSO-DMSO.
Built York 1978 to 1980.
System 750 V dc third rail.
BX1 bogies.
Gangwayed within unit with end doors.
Four GEC G310AZ traction motors of 82.125 kW per car.
Dimensions of 19.80 x 2.82 m (outer cars) and 19.92 x 2.82 m (inner cars).
Maximum speed of 75 mph.
Fitted with tightlock couplers, sliding doors, disc and rheostatic brakes.

Units are 507001-21/23-33. All are allocated to Birkenhead (BD) depot and are in Merseytravel livery.

Class 508.

DMSO-TSO-BDMSO.
Built 1979 to 1980 at York.
System 750 V dc third rail.
BX1 bogies.
Gangwayed within unit with end doors.
Four GEC G310AZ traction motors of 82.125 kW per car.
Dimensions of 19.80 x 2.82 m (outer cars) and 19.92 x 2.82 m (inner cars).
Maximum speed of 75 mph.
Fitted with tightlock couplers, sliding doors, disc and rheostatic brakes.

Originally they were built has 4 car units and number 508001-43. One trailer was removed and used in Class 455/7 units when they were transferred from the Southern Region to Merseyside. Certain members of these units are being transferred back South for use by Connex South Eastern services on the Medway valley line and the Isle of Sheppy line.

Numbers are 508101 to 508143. Mostly allocated to Birkenhead (BD) depot.

Class 507 and 508 Photographs.

507002 and other Class 507s and 508s at Southport Carriage Sidings on the 11th July 1993.	508104 in Merseyrail Livery at New Brighton on the 11th July 1993.
508107 at New Brighton on the 11th July 1993.

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