BRITISH RAIL CLASS 50

The British Rail 'Class 50' is a diesel locomotive built from 1967-68 by English Electric at their Vulcan Foundry Works in Newton-le-Willows. Fifty of these locomotives were built to haul express passenger trains on the northern half of the West Coast Main Line. They were originally hired from English Electric Leasings, not being purchased outright by BR until around 1973. Under the pre-1968 classification system these locomotives were known as the English Electric Type 4. The class were affectionately nicknamed "Hoovers" by rail enthusiasts because of their distinctive engine sound, caused by the centrifugal air filters originally fitted. These proved unreliable, and were later removed, but the "Hoover" nickname stuck.

Contents

Description

Introduction

Technical details

Numbers and names

Service

Refurbishment

Portuguese Locomotives

Preservation

Overview

At a glance

References

External links

General information

Preserved locomotives

Description

Introduction

The Class 50 fleet was developed following trials with the prototype Deltic-bodied DP2 locomotive. In many ways, the locomotives were a more powerful version of the earlier Class 40, and also included a host of complex electronic control gear, which to some extent was their downfall.
Fifty locomotives were built, initially numbered D400-D449. From 1973 onwards, the locomotives were renumbered into the range 50001-50050, to conform with the TOPS system. With the exception of the first-built locomotive, which was renumbered to 50050, the rest of the fleet retained the last two digits of their number, such that D431 would become no. 50031.

Technical details

★ 'Builder' : Engilsh Electric Co Ltd, Vulcan Foundry, Newton-le-Willows, Lancs.

★ 'Engine' : English Electric 16 CSVT 16-cylinder diesel

★ 'Wheel arrangement' : Co-Co

★ 'Transmission' : 6 English Electric type 538/5A axle-hung nose-suspended 400hp traction motors

★ 'Power' : 2700 bhp at 850rpm

★ 'Tractive effort'

★
★ '''Maximum''' : 48,500lb

★
★ '''Continuous''' : 33,000lb

★ 'Max speed' : 100mph

★ 'Weight (in working order)' : 115 tons

★ 'Axle load limit' : 19 tons 10 cwt

★ 'Dimensions'

★
★ '''Height''' : 12ft 9ins

★
★ '''Width''' : 8ft 10ins

★
★ '''Length''' : 68ft 6ins

★
★ '''Wheelbase''' : 56ft 2ins

★
★ '''Wheel diameter''' : 3ft 7ins

★ 'Route Availabiltiy' : 6

Numbers and names

Number		Name	Date named	Notes
Pre-TOPS	TOPS
D400	50050	''Fearless''	23.08.78	Carried nameplate 04.08.78 - 07.08.78. Preserved by the D400 Fund [1]
D401	50001	''Dreadnought''	10.04.78
D402	50002	''Superb''	21.03.78	Preserved by the Devon Diesel Society [2]
D403	50003	''Temeraire''	09.05.78
D404	50004	''St Vincent''	09.05.78
D405	50005	''Collingwood''	05.04.78
D406	50006	''Neptune''	09.79
D407	50007	''Hercules''	06.04.78	Renamed ''Sir Edward Elgar'' 25.02.84. Preserved at the Midland Railway Centre [3]
D408	50008	''Thunderer''	01.09.78	Preserved
D409	50009	''Conqueror''	08.05.78
D410	50010	''Monarch''	16.03.78
D411	50011	''Centurion''	08.79
D412	50012	''Benbow''	03.04.78
D413	50013	''Agincourt''	19.04.78
D414	50014	''Warspite''	30.05.78
D415	50015	''Valiant''	21.04.78	Preserved by the Manchester Class Fifty Group
D416	50016	''Barham''	03.04.78
D417	50017	''Royal Oak''	24.04.78	Preserved
D418	50018	''Resolution''	06.04.78
D419	50019	''Ramillies''	18.04.78	Preserved at the Mid Norfolk Railway [4]
D420	50020	''Revenge''	07.07.78
D421	50021	''Rodney''	31.07.78	Preserved
D422	50022	''Anson''	20.04.78
D423	50023	''Howe''	17.05.78
D424	50024	''Vanguard''	15.05.78
D425	50025	''Invincible''	06.06.78
D426	50026	''Indomitable''	29.03.78	Privately Preserved [5]
D427	50027	''Lion''	17.04.78	Preserved at the North York moors Railway [6]
D428	50028	''Tiger''	10.05.78
D429	50029	''Renown''	26.10.78	Preserved by the Renown Repulse restoration Group [7]
D430	50030	''Repulse''	10.04.78	Preserved by the Renown Repulse restoration Group [8]
D431	50031	''Hood''	28.06.78	Preserved by the Class 50 Alliance [9]
D432	50032	''Courageous''	07.07.78
D433	50033	''Glorious''	26.06.78	Preserved
D434	50034	''Furious''	06.04.78
D435	50035	''Ark Royal''	17.01.78	Preserved by the Class 50 Alliance [10]
D436	50036	''Victorious''	16.05.78
D437	50037	''Illustrious''	08.06.78
D438	50038	''Formidable''	05.05.78
D439	50039	''Implacable''	20.06.78
D440	50040	''Leviathan''	15.09.78	Preserved at the Coventry Railway Centre [11] (but see below)
D441	50041	''Bulwark''	08.05.78
D442	50042	''Triumph''	04.10.78	Preserved at the Bodmin and Wenford Railway [12]
D443	50043	''Eagle''	28.06.78
D444	50044	''Exeter''	26.04.78	Preserved by the Class 50 Alliance [13]
D445	50045	''Achilles''	12.04.78
D446	50046	''Ajax''	11.10.78
D447	50047	''Swiftsure''	26.05.78
D448	50048	''Dauntless''	16.03.78
D449	50049	''Defiance''	02.05.78	Preserved by the Class 50 Alliance [14]

Service

The class were built for working passenger services on the West Coast Main Line (WCML) north of Crewe, to Preston, Lancaster, Carlisle and Glasgow Central. Services south of Crewe would generally be worked by an electric locomotive, with the Class 50s taking over for the journeys that continued north. Trains were often double-headed to deal with the steep gradients, such as Shap Summit and Beattock Summit.
In 1974 the northern WCML was electrified, and the Class 50 fleet was displaced by new Class 87 electrics. The fleet was transferred en-masse to the Western Region, working mainline passenger services from London Paddington along the Great Western Main Line to destinations such as Oxford, Cheltenham Spa, Bristol Temple Meads, Plymouth and Penzance. It was not unusual for locomotives to work services on other routes, such as the Birmingham New Street to Bristol Temple Meads corridor. The introduction of the Class 50s on these routes enabled the last remaining diesel hydraulic "Hymeks", "Warships" and "Westerns" to be withdrawn. These locomotives were non-standard in the BR fleet, and the final "Western" was withdrawn in 1977.
In the late-1970s following the withdrawal of the last of the "Warships", BR decided to continue this naming policy, and as a result the Class 50 fleet were all named after Royal Navy warships. The first locomotive naming occurred in January 1978, when no. 50035 was named ''Ark Royal'' in honour of the aircraft carrier HMS ''Ark Royal''. The rest of the fleet was named during the course of 1978, concluding in October with no. 50029, which was named ''Renown'' after the Resolution-class nuclear submarine HMS ''Renown''. No. 50049 ''Defiance'' is named after a Royal Navy shore establishment rather than a sea-going vessel.
In 1977, British Rail introduced the Class 253 High Speed Trains onto the Great Western Main Line. The Class 50 fleet was therefore partially redeployed onto other routes, such as services to Birmingham New Street from London Paddington and Bristol Temple Meads. The class also found work on services along the West of England Main Line from London Waterloo to Salisbury, Exeter and Plymouth. However, due in part to the over-complexity of the design, the class was plagued with reliability problems. As a result, the decision was taken in the late 1970s to refurbish the entire fleet, removing much of the complex electrical gear.

Refurbishment

Between 1979 and 1984, the Class 50 fleet was refurbished at Doncaster Works, which had taken responsibility for the fleet after purchase from English Electric. The work involved simplifying the complex electronics and removing redundant features such as slow speed control. In addition, modifications took place to the air intake fan arrangement which eliminated the characteristic "sucking" noise which had earned the "Hoover" nickname. The original air circulation arrangement was the cause of many failures in traffic as the filtration system often prevented fresh air entering the engine room and stale, oil mist-filled air could not escape leading to many main generator failures. Externally, the locomotives all received high-intensity headlights, which changed the appearance of the front end. Starting with 50006, the first six locomotives were outshopped in the standard BR Blue livery. However, in 1980, no. 50023 ''Howe'' became the first to be outshopped in a revised livery with wrap around yellow cabs, large bodyside numerals and BR logo, in a livery that became known as BR Blue Large Logo. The final loco to be refurbished was 50014 which was released to traffic in the latter half of 1983.
Following refurbishment, the fleet was concentrated at two depots; Laira in Plymouth, and Old Oak Common in West London. The class were again used for Western Region services on the GWML out of Paddington, and on the West of England Main Line from Waterloo to Salisbury and Exeter. In 1986, this latter route came under the control of the Network SouthEast (NSE) sector, which saw the introduction of their bright blue, red and white livery. The first locomotive in this livery was again no. 50023 ''Howe''. The NSE livery had two versions; the original had upswept red and white stripes and the ends, with a white cab surround; the revised livery introduced in 1988 had the red and white stripes continue to the body ends, with a blue cab surround.

In 1984, no. 50007 ''Hercules'' was repainted into lined Brunswick green livery and renamed ''Sir Edward Elgar'', to commemorate the 150th anniversary of the Great Western Railway. Four Class 47 locomotives were similarly treated, and a Class 117 diesel multiple unit was repainted in chocolate and cream livery. As a result, no. 50007 quickly became a favourite with rail enthusiasts. Another locomotive repainted in a special livery was no. 50019 ''Ramillies'', which was repainted in a variation of BR Blue by staff at Plymouth Laira depot.
Towards the end of the 1980s, the fleet could be found mostly on the West of England route, as well as fast services from Paddington to Oxford. Some locomotives were also transferred to the civil engineers department to work maintenance and engineering trains. Around this time, the first locomotives started to be withdrawn, starting with no. 50011 ''Centurion'' in early 1987. This locomotive's names were later transferred to no. 50040, which was previously named "Leviathan". A further two locomotives, nos. 50006 ''Neptune'' and 50014 ''Warspite'' were withdrawn in 1987, followed by a further five locomotives (nos. 50010/13/22/38/47) in 1988.

In 1987, consideration was given to using the class on freight trains. To this end, no. 50049 "Defiance" was renumbered to no. 50149, equipped with lower-geared bogies, and outshopped in the new trainload grey livery with railfreight decals. It was based at Plymouth Laira depot, and tested on local china clay trains in Cornwall. The project was, however, not an outstanding success, and by 1989, the locomotive had returned to its original identity. Part of the reason for the lack of success was that the sanding equipment had been removed during the refurbishment process.
At the dawn of the 1990s, reliability of the Class 50s was still an issue. By this time, the class was solely used on the West of England route, having been replaced on the Oxford route by Class 47/7 locomotives. Arguably, the Class 50s were not suitable for the stop-start service pattern of Waterloo-Exeter services, nor to the extended single-line sections of this route, where a single locomotive failure could cause chaos. Therefore the decision was taken to retire the fleet, temporarily replacing them with Class 47 locomotives, which were in turn replaced by new diesel multiple units. From 1992, the Oxford route was worked by Class 165 and Class 166 units, whilst Class 159 units were introduced onto the West of England route in 1993.
By 1992, just eight locomotives remained in services, these being nos. 50007/008/015/029/030/033/046/050. Several of these locomotives were specially repainted to commemorate the run-down of the fleet. The first-built locomotive, no. 50050 ''Fearless'' was renumbered D400 and painted in its original BR Blue livery. Two other locomotives, nos. 50008 ''Thunderer'' and 50015 ''Valiant'' were also repainted, the former in a variation of BR Blue (the same as no. 50019 had previously carried), and the latter in "Dutch" civil-engineers grey/yellow livery. Of the final eight locomotives, three were retained until 1994 for use on special railtours, these being nos. 50007 ''Sir Edward Elgar'', 50033 ''Glorious'' and 50050 ''Fearless''. 50007 was returned to working order using parts from 50046, which surrendered its recently-overhauled power unit and bogies. By this time, no. 50050 had been repainted into Blue Largo Logo livery and 50007 also received a repaint into GWR green as the 1985 paint was wearing very thin. The final railtours operated in March 1994, during one of which no. 50033 was delivered for preservation at the National Railway Museum. The final railtour operated with nos. 50007 and 50050 from London Waterloo to Penzance and returning to London Paddington. Both locomotives were later preserved.

Portuguese Locomotives

The Portuguese public operator, CP, bought 10 locomotives similar to the BR Class 50, the 1800 series (1801-1810) that entered service in 1968. Like the UK design, they were equipped with an English Electric 16 CSVT engine and produced 2020 HP at the wheels. The specification of the Portuguese locomotives was more basic than the British Rail examples; for example the BR locomotives drive the radiator fan via electric power derived from the electric train heating (ETH) generator whereas on the CP1800s the fan is belt-driven from the diesel engine. The CP1800s are not fitted with ETH and the electrical control equipment is consequently simpler. They were the only diesel locomotives in Portugal authorised to run at 140 km/h. The CP1800s were all withdrawn in 2001 and most still survive, with their future unclear as of September 2006.

Preservation

Overview

Class 50 locomotives proved popular, with many saved for preservation. Several of the preserved locomotives have been registered for use on the mainline, including nos. 50031 ''Hood'' and 50049 ''Defiance''. One locomotive, no. 50017, was previously hired to Venice Simplon Orient Express (VSOE) to work the ''Northern Belle'' service from Bath to Manchester Victoria. As part of the contract it was painted in LMS-style maroon livery. However, it is now undergoing restoration having suffered a serious mechanical failure.
An ambitious project involving preserved Class 50s was "Operation Collingwood", an engineering charity established in the early 1990s. The aim had been to train young engineering apprentices by getting them to rebuild railway locomotives and Class 50s were chosen both for the fact that they were a British design throughout and that all were named (so the apprentices would derive some pride from rededication ceremonies at the completion of their work). To this end, Operation Collingwood purchased and stored nos. 50001, 50023, 50029, 50030, 50040 and 50045. All except 50029 and 50030 were heavily-stripped examples sold to scrapyards for final cutting up. The intention was to restore them by using industrial sponsorship money to build an engineering centre and overhaul the components, making brand new ones where necessary to overcome lack of availability of some parts unique to the original design. These ambitions failed when sponsorship did not reach the required level and the project lost various key people. The charity was wound up in 2002; 50001/023/040 and 045 were sold back to scrapyards and their state as little more than bodyshells deterred most further preservation attempts. 50045 was scrapped to provide spares for preserved 50026 and 50001 met a similar fate, A private individual made an attempt to restore 50023 using some parts from 50001 but this was abandoned and the shell was cut up a few years after the initial purchase. 50040 is widely believed to be suitable for cosmetic restoration and its future is unclear as of late 2005. 50029 and 50030 were in far better mechanical condition, and were sold to a preservation group for full restoration.
50043 ''Eagle'' was purchased in almost working order (the main generator had failed, a very common Class 50 problem) but it was never intended for restoration. Instead the power unit was gutted to provide parts for preserved Class 40 no. 40118 as the two share a very similar design of diesel engine. ''Eagle'' was then subjected to a further bout of stripping when electrical and other parts were sold to various Class 50 preservationists. Although cosmetically very smart, the loco was by this stage unrestorable and although an ambitious private individual did try, this effort soon came to naught and it was scrapped to provide parts for 50026 ''Indomitable''.
In 2005, 50031 and 50049 were returned to regular mainline use, on long term hire to Arriva Trains Wales, for use on special services in connection with events at the Millennium Stadium, and over the summer period saw regular use on the Monday to Saturday "Fishguard Flyer" from Cardiff to Fishguard and return, in connection with the ferry sailing to Ireland. One of the two locomotives was used for the service each day, along with 4 Mk2 coaches, the short formation and high power leading to very good performance.

At a glance

19 locomotives have been preserved& they are listed below:

Numbers (current in bold)			Name	Livery	Location	Notes
D400	'50050'	-	Fearless	BR Blue Large Logo	Yeovil Railway Centre	First-built locomotive.
'D402'	50002	-	Superb	Network SouthEast (Original)	South Devon Railway	Being restored to Unrefurbished condition
D407	'50007'	-	Sir Edward Elgar	GWR Brunswick Green	Midland Railway Butterley	Specially repainted to commemorate Great Western Railway 150th anniversary in 1984.
D408	'50008'	-	ex-Thunderer	Maroon (undercoat only).	Privately owned, LSWR, Crewe	Re-entered preservation in 2006.
D415	'50015'	-	Valiant	BR Blue Large Logo	East Lancashire Railway	Only Class 50 to carry "Dutch" civil-engineers livery.
D417	'50017'	-	ex-Royal Oak	LMS Maroon	Birmingham Railway Museum	Previously used to operate VSOE Northern Belle.
D419	'50019'	-	Ramillies	BR Blue Large Logo	Mid-Norfolk Railway	-
D421	'50021'	-	Rodney	BR Blue Large Logo	Birmingham Railway Museum	-
D426	'50026'	-	Indomitable	BR Blue Large Logo	Privately owned, Derby	-
D427	'50027'	-	Lion	Network SouthEast (Revised)	North Yorkshire Moors Railway	-
D429	'50029'	-	Renown	BR Blue Large Logo	Peak Rail	-
D430	'50030'	-	Repulse	BR Blue Large Logo	Peak Rail	-
D431	'50031'	-	Hood	BR Blue Large Logo	Severn Valley Railway	Mainline registered.
D433	'50033'	-	Glorious	BR Blue Large Logo	Swindon Steam Railway Museum	Previously at National Railway Museum.
D435	'50035'	-	Ark Royal	BR Blue Large Logo	Severn Valley Railway	Currently at Old Oak Common depot, London, awaiting repairs to main generator earth fault.
D440	'50040'	-	Leviathan	BR Blue Large Logo	Coventry Railway Centre	Awaiting Restoration.
D442	'50042'	-	Triumph	BR Blue	Bodmin & Wenford Railway
'D444'	50044	-	Exeter	BR Two Tone Green	Severn Valley Railway	Cosmetically de-refurbished.
D449	'50049'	50149	Defiance	BR Blue Largo Logo	Severn Valley Railway	Mainline registered.

References

★ Book of the Fifties, , John, Chalcraft, Peter Watts Publishing, ,

★ Portrait of the Fifties, , John, Chalcraft, Rail Photoprints, ,

★ The Power of the 50s, , John, Vaughan, OPC, ,

External links

General information

★ Class 50 photo gallery

★ The 50's - information website.

★ Railways online - Class 50 profile.

Preserved locomotives

★ Manchester Class 50 Group - Owners of preserved locomotive no. 50015 ''Valiant''

★ Project Defiance - Owners of preserved locomotive no. 50049/50149 ''Defiance''.

★ Renown Repulse Restoration Group - Owners of preserved locomotives nos. 50029 and 50030, which are currently undergoing extensive restoration.

★ The Fifty Fund - Owners of preserved locomotives nos. 50031, 50035 and 50044. Includes class history, specifications and more information.

★ Class Forty Appeal - Owners of 50007 "Sir Edward Elgar"