British Rail Class 370

Further information: Advanced Passenger Train

British Rail Class 370 Advanced Passenger Train – Prototype
Class 370 at Carlisle
Standard Class saloon of APT
In service	1980–1986
Manufacturer	British Rail Engineering Limited
Built at	Derby Works
Family name	Advanced Passenger Train
Constructed	1977–1980
Entered service	1980
Number built	3 full sets (6 units plus 2 spare vehicles)
Number preserved	7 vehicles
Formation	7 cars per unit: DTS-TS-TRSB-TU-TF-TBF-M (full set is 2 units back-to-back)
Diagram	DTS vehicles: LE201 TS vehicles: LH201 TRSB vehicles: LK201 TU vehicles: LH401 TF vehicles: LH101 TBF vehicles: LJ101 M vehicles: LC501
Fleet numbers	370001–370006
Operator	British Rail InterCity
Depot	Shields Road (Glasgow)
Line served	West Coast Main Line
Specifications
Car body construction	M vehicles: steel Others: aluminium
Train length	147 m (482 ft)
Car length	DTS vehs.: 21.440 m (70 ft 4.1 in) M vehs.: 20.400 m (66 ft 11.1 in) Others: 21.000 m (68 ft 10.8 in) (all including gangway portions)
Width	2.720 m (8 ft 11.1 in)
Height	M vehicles: 3.397 m (11 ft 1.7 in) Others: 3.510 m (11 ft 6.2 in)
Wheelbase	Over DTS/TBF veh. pivot centres: 14.850 m (48 ft 8.6 in) Over articulated vehicle pivots: 15.900 m (52 ft 2.0 in) Over M vehicle pivot centres: 13.000 m (42 ft 7.8 in)
Maximum speed	125 mph (200 km/h)
Weight	DTS vehicles: 35 t (34 LT; 39 ST) TBF vehicles: 33 t (32 LT; 36 ST) M vehicles: 67.5 t (66.4 LT; 74.4 ST) Others: 24 t (24 LT; 26 ST)
Traction motors	4 × ASEA LJMA 410 F
Power output	3,000 kW (4,000 hp) continuous
Electric system	25 kV 50 Hz AC overhead
Current collection	Pantograph
UIC classification	2′(2′)(2′)(2′)(2′)(2′)2′+Bo′Bo′
Bogies	M vehicles: BREL BP17 At articulations: BREL BT11 Others: BREL BT12
Minimum turning radius	91 m (300 ft)
Braking systems	Hydraulic and hydrokinetic
Safety systems	AWS C-APT
Multiple working	Within class (max. 2 units)
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Notes/references
Specifications given for seven-car units as at August 1981, except where otherwise noted. A full set train would be formed of two units coupled back-to-back.

British Rail's Class 370 tilting trains, also referred to as APT-P (meaning Advanced Passenger Train Prototype), were the pre-production Advanced Passenger Train units. Unlike the earlier experimental gas-turbine APT-E unit, these units were electric multiple unit sets, powered by 25 kV AC overhead electrification and were used on the West Coast Main Line between London Euston and Glasgow Central. The train had eight traction motors fitted to the two central power cars giving a total output of 8,000 hp (6,000 kW), which enabled it to set the UK rail speed record of 162.2 mph (261.0 km/h) in December 1979, a record that stood for 23 years until broken by a Eurostar Class 373 on the newly completed High Speed 1 line.