Here are the 1973 Tube Stock Car Specs "The one in the OP Photo"
Bodies: Welded steel underframe riveted aluminium body frame and aluminium alloy panelling. Exterior painted on refurbishment in LUL corporate red,
white and blue livery.
Bogies: 4-wheel symmetrical plateframe bogies of welded/riveted construction. Wheel diameter 790mm new, 710mm worn.
Couplers: London Underground Automatic Wedgelock between units, semi-permanent bar between cars within a unit.
Traction system: G.E.C. Traction pneumatic single camshaft, resistance controller with series/ parallel grouping and 2 stages of weak field and
rheostatic dynamic brake.
Brush LT118 axle-hung, nose-suspended motors, 300 volt motors,17/75 gear ratio, 4 per driving motor car, 1 per driving axle, the two motors on each
bogie are connected in permanent series.
Compressors: Westinghouse 3HC43 (reciprocating) with integral 630V dc motor, 1 on each single-ended trailer, 2 on special trailers (double-ended
Brakes: Service brake: Motor cars – blended rheostatic/friction brake with load control. Trailer cars – friction brake with load control. Friction
brake – one brake per wheel. Emergency Brake: All cars – Friction brake. Brake control: via energise to release Westcode 7-step valve. Steps
3,4,5,6, for service, step 7 for emergency. Service brake: Energise to apply 3-wire control system. Emergency: Energise to release electric control.
Parking brake: Automatic spring-applied, air released.
Auxiliary power G.E.C. Traction type MG3007 Motor- Alternator-Rectifier – one per motor car, supplies: nominal 50V lead acid battery, 77Ah,
Powernetics 6kVA single phase, 240V, 50Hz static converter to feed saloon fans and cab air conditioning – one per trailer.
Main lighting: 115V, 850Hz supply from the motor alternator supplying fluorescent tubes via individual inverters – 20 tubes per driving motor car
and 22 tubes per trailer/UNDM car.
Emergency lighting: Four battery-fed fluorescent tubes per car supplied by individual inverters and normally forming part of the main saloon
Heating: Panel heaters, 4.2kW per car.
Ventilation: Seven extractor fans per car, two of which are inverter-fed from the battery. Manually operated ventilators over saloon side windows.
Passenger Six LED, scrolling visual display units per car. Semi-automatic audio station Information: announcements. Passenger alarm with talkback to
Doors: Pneumatically operated sliding doors. Two double and one single per side (driving motor cars), two double and two single per side (trailer and
Train Protection Tripcocks/train stops/deadman’s handle.
[edit on 9-7-2009 by NotAgain]