British Rail Classics: Class 45 Diesels on Settle to Carlisle Line - 1970s

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British Rail Classics: Class 45 Diesels on Settle to Carlisle Line - 1970s

This film was originally a standard 8mm Silent Cine Film Digitised with a Winait Film Scanner. Authentic sound effects were added.

This film is Part One of a series of 3 films featuring Diesels on the Settle to Carlisle Line. Part Two features Class 25, 40 and 50. Part Three features Class 114 DMU. All 3 Parts will have authentic sound effects added.



The film shows clips of the British Rail Class 45 filmed on the Settle to Carlisle Line during the early 1970s.

If anyone knows where the clips were filmed please comment below.


The British Rail Class 45 or Sulzer Type 4 are diesel locomotives built by British Railways' Derby and Crewe Works between 1960 and 1962. Along with the similar Class 44 and 46 locomotives, they became known as Peaks.

Engine
The engine of the Class 45 was a marine-type, slow-revving diesel, a Sulzer 12LDA28B with a bore of 280 mm (11.024 in) (hence the 28 in the engine designation) and a stroke of 360 mm (14.173 in). This gave 22 litres (1,300 cu in) per cylinder, or 264 litres (16,100 cu in) for the whole engine. The unit was turbocharged and intercooled and gave 2,500 hp (1,900 kW) at 750 rpm. The engine was of the double bank type with two parallel banks of 6 cylinders, geared together to a single output shaft. Six-cylinder versions of the engine were fitted in the Class 25 locos (amongst others) and eight-cylinder versions in Class 33s. Class 45s were the updated versions of the Class 44 locomotives, the latter having a 2,300 hp (1,700 kW) non-intercooled version of the same engine; i.e. the 12LDA28A. The later Class 47 had a modified version of the same engine, a 12LDA28C.

Train heating
When initially put into service, the locomotives were fitted with multi-unit working and steam-heating boilers for passenger service. In the early 1970s, fifty were fitted with electric train supply in place of their steam-heating boilers and assigned to work services on the Midland Main Line from London St Pancras to Nottingham, Derby and Sheffield. These locomotives were renumbered as Class 45/1.

Locomotive auxiliary supply
The Class 45 is unusual in having a 220 volt electrical system for driving auxiliary systems and battery charging. Most British Railways diesels of the same era had 110 volt auxiliaries.

History
The Class 45s became the main traction on the Midland Main Line from 1962, and their introduction allowed considerable acceleration of the previous steam-powered service. The Class 45s remained the main source of power on the Midland Main Line up to 1982, when they were relegated to secondary services following introduction of HSTs on the route. From 1986 Class 45s virtually disappeared from the line. From the early 1980s until their withdrawal c. 1988, the class were regular performers on the North Trans-Pennine line working services from Liverpool Lime Street to York, Scarborough or Newcastle via Manchester Victoria, Huddersfield and Leeds. These trains were usually formed of early Mark 2 carriages, of up to seven in a typical train.

Withdrawal
The great majority of Class 45s were withdrawn between 1981 and 1988 after class 43 HSTs were introduced to their routes, and the last was withdrawn from service by 1989.

Power Type - Diesel Electric
Builder - British Railways' Derby Works and Crewe Works
Build Date - 1960-62
Total Produced - 127
Maximum Speed - 90mph
Power Output - Engine - 2500bhp At Rail: 2000hp

Operators - British Railways
Numbers - D11-D137, later 45001-45077; 45101-45150
Nickname - Peak
Axle Load Class - 7
Withdrawn - 1981-1989
Disposition - Eleven preserved, remainder scrapped