British Rail Class 370

British Rail Class 370
*Advanced Passenger Train – Prototype*
British Rail Class 370; Advanced Passenger Train – Prototype
	Class 370 at Carlisle
	First-class saloon in a preserved vehicle.; (The plain blue seat covers are post-withdrawal replacements for the original tartan material.)
In service	1980–1986
Manufacturer	British Rail Engineering Limited
Built at	Derby Works
Family name	Advanced Passenger Train
Constructed	1977–1980
Entered service	1979
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
Operators	British Rail InterCity
Depots	Shields Road (Glasgow)
Lines 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(s)	25 kV 50 Hz AC overhead
Current collector(s)	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 system(s)	Hydraulic and hydrokinetic
Safety system(s)	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 powered by 25 kV AC overhead electrification and were used on the West Coast Main Line between London Euston and Glasgow Central. The APT-P is the most powerful domestic train to have operated in Britain, the eight traction motors fitted to the two central motor cars giving a total output of 8,000 hp (6,000 kW). This enabled the train 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.

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