British Rail Class 370

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[1]
Family name	Advanced Passenger Train
Constructed	1977–1980[2]
Entered service	1979[3]
Number built	3 full sets (6 units plus 2 spare vehicles)[3]
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[3]
Operator(s)	British Rail InterCity
Depot(s)	Shields Road (Glasgow)[4]
Line(s) served	West Coast Main Line
Specifications
Car body construction	M vehicles: steel Others: aluminium
Train length	147 m (482 ft)[5]
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 collection method	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[6]
Safety system(s)	AWS C-APT[7]
Multiple working	Within class (max. 2 units)
Track gauge	1,435 mm (4 ft 8 1⁄2 in) standard gauge
Notes
Specifications given for seven-car units as at August 1981,[8] 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 25kV 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. This enabled the train to set the UK rail speed record of 162.2 mph in December 1979, a record that stood for 23 years.^[9]

1. ↑ "Advanced Passenger Train – Prototype". The Crewe Heritage Centre. Archived from the original on 24 June 2015. Retrieved 1 December 2015.
2. ↑ "BR, Class 370 Advanced Passenger Train Non-Driving Motor (NDM), 49004, Era 7". Hornby.com. Retrieved 24 February 2021.
3. ↑ ^{3.0 3.1 3.2} Marsden 1983, pp. 119–120 harvnb error: no target: CITEREFMarsden1983 (help)
4. ↑ Coxon, Dave. "High speed pantograph testing in Scotland in October 1983". Testing Times. Retrieved 10 February 2023.
5. ↑ Boocock & Newman 1976, p. 660, Table 1. sfn error: no target: CITEREFBoocockNewman1976 (help)
6. ↑ British Rail's Advanced Passenger Train – InterCity APT (PDF). Derby: Chief Mechanical & Electrical Engineers' Department, British Railways Board. 1979. GM869/A10/1279. Retrieved 10 February 2023.
7. ↑ Tomorrow's train, today (PDF). London: British Railways Board. 1980. GM1000/A7/980. Retrieved 10 February 2023.
8. ↑ Vehicle Diagram Book No. 210 for Electric Multiple Units (including A.P.T.) (PDF). Derby: Mechanical & Electrical Engineering Department, British Railways Board. LC501, LE201, LH101, LH201, LH401, LJ101, LK201 (in work pp. 428–441). Archived from the original (PDF) on 21 January 2015. Retrieved 10 February 2023 – via Barrowmore MRG.
9. ↑ "Train smashes speed record". 30 July 2003 – via news.bbc.co.uk.