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]
Operators
British Rail InterCity
Depots
Shields Road (Glasgow)[4]
Lines 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 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[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/references
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 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 23years until broken by a Eurostar Class 373 on the newly completed High Speed 1 line.[9]
^"Advanced Passenger Train – Prototype". The Crewe Heritage Centre. Archived from the original on 24 June 2015. Retrieved 1 December 2015.
^"BR, Class 370 Advanced Passenger Train Non-Driving Motor (NDM), 49004, Era 7". Hornby.com. Retrieved 24 February 2021.
^ abcMarsden 1983, pp. 119–120
^Coxon, Dave. "High speed pantograph testing in Scotland in October 1983". Testing Times. Retrieved 10 February 2023.
^Tomorrow's train, today(PDF). London: British Railways Board. 1980. GM1000/A7/980. Retrieved 10 February 2023.
^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.
^"Train smashes speed record". BBC News. 30 July 2003. Archived from the original on 27 April 2009. Retrieved 2 June 2010.
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