Thumpers - BR(S) Diesel Electric Multiple Unit - DEMU type 3D, later Class 207
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also
potted
42 year
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or
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pages.
207017 in its later years without its centre trailer car. image © Ian Feather

3D Overview - Known as 'Thumpers', 'Oxteds' or 'Sussex' units
19 units entered service during 1962 and were 3 car (coded 3D, DMBS + TS + DTC).
The original unit numbers of 1301 to 1319 were renumbered as 207001-207019.
In 2004 the last units were withdrawn from service and 3 units went into preservation .
Vehicle type Coded Vehicle nos. Seating Features
Driving Motor
Brake Second
DMBS
MBS
60126-60144 42 2nd class engine room
+ guards compartment
+ open 2nd class saloon
Trailer Composite
centre trailer
TC
TCsoL
60600-60618 24 1st class
34 2nd class
1st compartments
+ open 2nd saloon
+toilets(1st and 2nd class)
Driving Trailer
Second
DTS 60900-60918 x 2nd open 2nd class saloon

They are BR MK1 design, 8' 6" width, 63' 5" over headstocks and 46' 6" bogie centres.
Buckeye couplers and rubbing plates throughout, at cab ends drophead buckeye+buffers.
The units can work in multiple with other DEMU types. No gangways between coaches.
page © D.Harris 2005