CLASS 47 – ALMOST 60

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In 2022, BR’s most common – take that whichever way you like – diesel locomotive that started life in 1962, as the first of the 2nd generation of main line diesel-electric locomotives.  It came at a time when there was certainly competition between Britain’s locomotive manufacturers, and a fair degree of collaboration and partnership within the railway industry.  There was a considerable degree of collaboration between the private/commercial sector and the BR workshops, which only declined in the 1980s, until it almost completely disappeared by the turn of the century.

668 - Class 47 No. 47144 at Barrow - 1730

27th August 1979, and Class 47 No. 47144 leaves Barrow-in-Furness, with the 17:30, bound for London Eueston.  (c) RPB Collection

So, the Class 47 – which to be precise, was announced in the railway press as a new, highly innovative design from Hawker Siddeley – who had only recently become owners of Brush Traction Ltd and Brush Electrical machines.

Falcon1a

Brush’s prototype “Falcon” was the model for the Brush Type 4, but with a completely different power plant.

The most widely used, most well known, longest surviving, successful – just some of the words you might use to describe the Brush Traction design ordered by British Railways in the early 1960s. Successful was not at one time a word you would have used to describe this locomotive – a bulk order, rushed through as BR’s debts were climbing, and the ‘Pilot Scheme’ diesels were still “on trial”. Brush too, was perhaps an unlikely choice as supplier, since the company did not have the same pedigree as English Electric, AEI, Birmingham RC&W Co., or Metropolitan-Vickers in the railway field. But, as Dylan said, the times they were “a-changin”.

The PDF file below, is not intended to be a fully detailed account, there are several other, very well written books and articles that cover the individual locomotives, and its design and operational history in detail.

1052 - Unidentified Class 47 Co-Co diesel on oil train at Hathersage 1975

An unidentified 47 at speed on a train of oil tanks approaching Hathersage in 1975.                  Photo: Dave Larkin

 

Perhaps this will whet your appetite to study further – just click on the image below:

Class 47 Cover

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47826 in InterCity livery, but playing tail end Charlie to the restored BR Standard Class 8P “Duke of Gloucester”, which has just entered the tunnel at the west end of Dalton-in-Furness station in March 2007. © RPBradley Collection

Useful Links & Further Reading

 

 

Halls of Fame – A Mixed Traffic Masterpiece

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Some might say, that the Great Western Railway’s “Hall” and “Modified Hall” class 4-6-0s were simply a do anything, go anywhere mixed traffic design – which they were – but of course, the GWR would not be able to operate without them. These locomotives were the unsung heroes of the steam railway, and yet not one was set aside for inclusion in the UK’s “National Collection”. Happily though a number of both the original Hall and Modified Hall designs can still be seen in operation, and under restoration. In fact, one of their number is being ‘re-modified’ to represent the precursor Churchward “Saint Class”, which is a tribute to the design’s longevity and importance.

This class of 4-6-0 was easily the most numerous on the GWR., and was a design whose ancestry can be directly traced to the famous Saint Class. In a number of instances they have been referred to as “6ft 0ins Saints”. No fewer than 258 of Collett’s new Hall Class engines were built between 1928 and 1943, following the highly successful modification and operation of saint class engine No. 2925 “Saint Martin”.

Designs for the new Hall Class locomotives were born out of Churchward’s practice, with some influence from the operating department.
They were perhaps the first truly mixed traffic type owned and operated by the GWR and although built when C.B. Collett was Chief Mechanical Engineer, the basic format had already been outlined by Churchward in his scheme of 1901. The success of the 43XX moguls would, in the opinion of’ the running department, be improved still further with the lengthening of the wheelbase and the provision of a leading bogie, and for greater power, a GWR Standard No. 1 boiler.

In December 1924, came off Swindon Works with 6ft 0ins coupled wheels, and the Collett side window cab. But, these were 
the most obvious differences, with others that were thought necessary on the rebuild but not included later, or modified for the production series engines.

The rebuilding of’ “Saint Martin” incorporated standard ‘Saint Class’ cylinders, which following conventional Swindon practice, required them to be carried lower in the frames, in order to line up with the centre line of the smaller coupled wheels.

Saint Martin - Green Folder GWR 63

This is the locomotive which gave birth to the most numerous, popular, and successful of’ the GWR two-cylinder classes. The extensive modifications to No.2925 Saint Martin, here seen in converted form, resulted in the building of the Hall Class 4-6-0s.    © Lens of Sutton

So, that’s where the new “Hall Class” started life, as a combination of an earlier 4-6-0 design, paired with the operating ideas and experience with the 2-6-0 “43XX Class” moguls.

The New Kid On The Block

The appearance of’ the new mixed traffic engines was not without its troubles, despite the successful trials with the rebuilt “Saint Martin”, though fortunately, none of these related to the design, construction, 
or operation of the new engines. On the GWR, as on other companies’ lines,
 the 1930s was a time when many of the older designs were being scrapped and replaced with more modern, more efficient designs. However, the rail enthusiasts of that time regretted the arrival of the “Hall Class” only because many of the ageing 4-4-0s – some dating back to 1890s – would soon be extinct.

The first 80 of the new breed of locomotives came out of Swindon Works under Lot 254, between December 1928 and February 1930.

4901 Adderley Hall copy

The first of the many – No. 4901 in photographic grey at Swindon Works in 1928. This was a very successful design, and formed the backbone of GWR and BR Western Region mixed traffic working until it was scrapped in 1960.           (c) Historical Railway Images

Unsurprisingly they were fitted with the Swindon Standard No.1 boiler, as adopted for all large 10-wheeled locos, and fitted to their predecessor “Saint Class” 4-6-0s, but with Collett now in charge, the footplate crew were provided with a larger, side window cab. On the face of it this might not seem a key design improvement, but compare the Hall cab to an older design, such as the Saints, with their Churchward cab, the protection from the elements was visibly improved.

In construction, the new design largely kept to Swindon practices, whether it was for boiler, firebox, frames, or bogie design, with the Collett changes having been proven in practice with the highly successful “Saint Martin” – rebuilt and delivered in December 1924. In fact this rebuild was so successful that an order for those first 80 “Hall Class” was placed with Swindon Works in December 1927.

Eventually, 257 of the “Hall Class” were built up until the early spring of 1943, and cost £4,375 each  in the first batch, and whilst subsequently, cost rose, they rapidly became the GWR’s workhorse, and universally operated across the network.

Hall diagram

Boiler, Frames, Wheels and Motion

These were the Swindon “Standard No.1”, and were fitted to all the GWR’s 10-wheeled locos, and were the same as those fitted to the “Saint Class”, but the Halls boilers had the added suffix ‘A’, as prescribed in the company’s extensive classification scheme. The boilers were built in two rings, with the second ring tapered, attached at the rear to a trapezoidal shaped firebox, following ‘Belpaire’ style, and “waisted in” to fit between the frames at the cab end. The firegrate itself had a flat rear portion, with the front tapering downwards, from just in front of the training coupled axle.

The cylinders were mounted on the outside of the frames, as part of a casting with half of the smokebox saddle. The inside admission piston valves were carried above the cylinders, and a rocking shaft transferred the movement through the frames from an extension rod, expansion link, and the eccentric rods attached to the driving axle. Sounds complicated! Eccentrics mounted on the driving axle were the characteristics of the Stephenson valve gear, which, by the 1920s was standard Swindon practice.

The 6ft 0ins coupled wheels had 20 spokes, and were paired with 3ft 0ins diameter wheels on the leading bogie. Churchward’s simple design principles in the generously proportioned axleboxes, with pressed in whitemetal liners were maintained by Collett – for the Hall Class these were 10ins long and 8 ¾ ins in diameter. Coupled wheels were balanced in pairs, with steel plates rivetted to the spokes, and molten lead poured into the gap, and was a change from earlier practice, and claimed to provide greater accuracy in balancing.

That same simple design approach was equally effective in the coupling rods, which were plain, or slab sided, with no fluting – a practice adopted on many railways, ostensibly to save weight and reduce hammer blow.

Tenders

No less than three different designs of tender were paired with the class. From No. 4901 to 4942, a standard Churchward 3,500 gallon design was used, whilst from 4943 to 4957, a new Collett design of 3,500 gallon capacity was used, and finally a new 4,000 gallon Collett tender for the rest. This last type still carried the characteristic out turn to the upper sides of the bunker space, but when Hawksworth took over from 1941, this changed, and with the new ‘Modified Hall’ and ‘County’ class 4-6-0s, a simple, slab sided tender was adopted. That old simplicity rule appearing again.

Hall Class – Leading Dimensions

Hall Class Dimensions

Hawksworth’s Modified Hall

This was a fair bit more than modifications, and demanded changes to jigs, tools and working practices at Swindon, and so perhaps to describe this as a modification was wrong. It was much more of a development, by applying Hawksworth’s ideas to Churchward design and building a new mixed traffic locomotive for the GWR.

Hawksworth too over from C.B. Collett in 1941, and oversaw the motive power of the GWR until nationalisation in 1948. But, where Collett had largely continued the Churchward model, Hawksworth took a more radical – with a small ‘r’ – approach. He had up until that point been the company’s Chief Draughtsman, with responsibility for locomotive testing.

First out of the blocks was the 6959 Class or “Modified Hall”. These 71 locomotives were built between 1944 and 1950, and based on the Hall Class, a number of experimental ideas included that improved the performance of the 6ft 4-6-0s across its operational range.

Modified Hall 7923 Green Folder GWR 69

Classic Modified Hall on shed in the early 1960s. No. 7923 “Speke Hall”, in final BR lined green livery and sporting the post 1956 on the Collett 4,000 gallon tender. On the fireman’s side, the Modified Halls had the fire iron tunnel alongside the firebox, as standard practice, whilst for 7923, the old familiar Collett 4,000 gallon tender was used.         Photo: RP Bradley Collection.

A key change in the design of the Standard No.1 boiler used on these engines, was the fitting of a 3-row superheater, with 21 flues, which was intended to improve the speed and performance of the type, along with further boiler/firebox changes to cope with poorer quality coal. Mechanically too, the Modified Halls were a simpler construction, with full length frames, and cylinders attached to the outside faces, instead of the previous casting, which included a part of the smokebox saddle. These changes inevitably brought down building costs, and the simpler layout reduced operating and maintenance costs.

The adoption of a single mainframe construction, from drag box to buffer beam demanded a major change to the fabrication, and assembly, of the cylinders and valves. This simple change away from part plate and part bar frame to all plate frame was a radical step, and which must have caused major changes in the practices used in the works foundry and erecting shops. The cylinders, still driving the Stephenson valve motion by means of rocking shaft, were also still 18 ½ ins by 30ins, but were now cast as two separate pieces, bolted to the outer, machines faces of the mainframes. To carry the smokebox, a new cross stretcher was placed between the frames, and extended upwards to provide a support and mounting for the smokebox itself.

Modified Hall diagram

All GWR two-cylinder engines had a pronounced fore and aft motion, especially when starting, and the Modified Hall was no different, and whilst their were inconsistencies in the layout of the steam and exhaust pipes at the front, that pronounced motion continued. But, perhaps the most obvious departure was the widescale adoption of mechanical lubrication. Up to the arrival of these locomotives, GWR practice was “hydrostatic lubrication”, which consisted of the driver counting the number of drops (15 drops every 2 minutes) of oil passing through a sight glass on the footplate. The new locomotives had the mechanical lubricators mounted on the running boards, just ahead of the leading coupled wheels, and for guidance, the cab gauges included an ‘oil’ / ‘no oil’ indicator.

The tenders on the first 14 of the modified class were straightforward Collett 4,000 gallon types, but from 6974 onwards, Hawksworth provided the new, much simpler to build, slab sided design. The approach here followed that of other railway companies, in pursuing a simpler design and build process, to reduce capital and operational costs, with the intent that maintenance practices would be cheaper.

Modified Hall Class – Leading Dimensions

Modified Hall Dimensions

Oil Burners

The use of fuel oil for railway locomotives at the time the Hall Class arrived was not in regular use in Britain, because of the abundance of coal supplies – and no doubt the cheap cost of mining.   Even so, it had been tried back in 1893, with the most famous examples being on the Great Eastern Railway – as an experiment.

Shortly after the end of World War 2, there was a coal shortage GWR, and in particular in 1946/47, where the severe winter drove increased demand. But, of course, there was a manpower shortage as well, despite the ‘Bevin Boys’, who were recruited to replace the young miners, who had been conscripted during the early war years.

So, the railways, including the GWR, revisited the idea of equipping steam locomotives for burning fuel oil. This was also encouraged by the promised removal of the fuel-oil tax, and in October 1946 a subsidy of £1 per ton was paid to consumers – such as a railway – of fuel oil. This subsidy offset the fuel-oil tax, and with that in mind the GWR planned to convert 84 Hall Class engines to oil burning, but in the end only 11 were completed, with another 10 fitted with the oil burning equipment. In addition, the Government promised help to all companies changing over from coal to oil, which included the bulk purchase of all the necessary equipment, both on the loco and on the shed.

Converted

Garth Hall - oil -Green Folder GWR 57

“Garth Hall” as converted to oil burning in 1946.

So, for the GWR, the first loco to be converted was No. 5955 “Garth Hall” in June 1946, and it was allocated a new number – 3950. The remaining 10 locomotives were converted in April and May 1947, and included: 4907/48/68/71/72, 5976/86, 6949/53/57. The average life of these locos as oil burners, was around 2 years, with all being reconverted to oil-burning in 1950.

Oil Refuelling Depot layout cover

Re-Converted

Garth Hall - no oil -Green Folder GWR 133

By 1950, the few Hall class engines that had been running as oil-burners, were all converted back to coal burning. In this view, the original candidate “Garth Hall” is paired with a standard Hawksworth 4,000 gallon tender.

Operations

So, why were these locomotives needed? They were introduced at a time when the GWR had few modern mixed traffic designs, but plenty of the express passenger variety, and whilst Churchward’s application of new developments, especially following French practices were a great improvement on the Dean era, traffic was changing. Churchward had already introduced the 47XX series of heavy freight 2-8-0s, but a design that could be used on both passenger – long distance, or shorter – and a variety of freight workings was becoming an essential tool in railway operations.

When the Halls started to appear, all of the ‘Big Four’ companies were engaged on modernising and standardising their locomotive stock, which, in the 1930s resulted in many hundreds of the old ‘pre-grouping’ designs being scrapped, and replaced by engines with a wider operational range.

On the GWR, Churchward’s approach to locomotive design and standardisation in 1901 was mirrored in later years, by British Railways from 1948, and included elements of current best practice at home and abroad. Tapered boilers for example were introduced after studying the American approach, whilst the firebox was developed from a design popularised in Belgium, by Belpaire.

Churchward’s successor C.B. Collett applied these radical changes introduced a decade or so earlier in the “Saint Class” conversion in 1924, and delivered the most successful mixed traffic design the GWR operated, as the “Hall Class” 4-6-0.

The earlier ‘standard designs’ had included a mixed traffic loco with 5ft 8ins coupled wheels, and was a type that had been advocated by the Operating Department. The Hall experiment – which you could conclude was an exercise in recycling, delayed the introduction of a 5ft 8ins mixed traffic engine, and was entirely down to the Hall’s operating success. Collett did finally introduce a 5ft 8ins mixed traffic design – the “Grange” class, from 1936, more than a decade later.

Initially, the first 14 Halls were sent out to the West Country and based at Laira and Penzance, but as more were built, they were soon spread out across the network, and by 1947; some 30 depots had an allocation of the Hall Class.  From their earliest days, workings normally associated with Halls were as varied as the names they carried, from freight, empty stock, stopping and express passenger. Only the prestigious ‘Cornish Riviera’ express was excluded from their range, but in later years, even this was overcome.

Barring engine 4941 “Bowden Hall”, which received a direct hit from a bomb in WW2, most of the class survived into BR days unscathed, and remained so until around 1961, and as dieselisation progressed rapidly on the Western Region, only 50 Hall Class engines were at work in 1965.

The Modified Halls of course suffered similar fate at the end of steam, but they had earned a reputation as speedy machines, and were well though ouf by enginemen and maintenance crews alike. The various changes to their design and construction certainly seemed to add to their value as mixed traffic designs, and coupled with their Collett progenitors, they were indeed a mixed traffic masterpiece, shared by three different CMEs of the old GWR.

After Life

Perhaps unsurprisingly, no fewer than 11 of the Hall and 6 of the Modified Hall class engines were rescued from the breakers’ torches, and now ply their trade on a number of Britain’s Heritage Railways. There are 3 Hall Class and 3 Modified Hall Class fully operational, with 4 of the Halls either being overhauled or restored, whilst 4920 is listed as stored on the South Devon Railway. Perhaps most interestingly, a Hall Class achieved superstar status thanks to Harry Potter and J.K. Rowling – 5972 “Olton Hall” is now a static exhibit at the Warner Brothers Studios.

Of the Hawksworth Modified Halls 4 are fully operational, with one being overhauled at the time of writing, and the final member 6984 “Owsden Hall” being restored at the Buckinghamshire Railway Centre.

Preserved Hall Class Engines

Preserved Halls

Preserved Modified Hall Class Engines

Preserved Modifieds

Further Reading & Links:

  • “GWR Two Cylinder 4-6-0s and 2-6-0s, Rodger Bradley,
    • Pub; David & Charles 1988; ISBN; 0715388940
  • “The GWR Mixed Traffic 4-6-0 Classes”, O.S.Nock,
    • Pub; Ian Allan 1978; ISBN; 0711007810
  • “Great Western Steam”, W.A.Tuplin,
    • Pub; George Allen & Unwin 1982; ISBN; 0043850359
  • “The Great Western at Swindon Works”, Alan S Peck;
    • Pub; Ian Allan 1998; ISBN; 9781906974039

 

Raveningham Hall video (Modified Hall Class)

Rood Ashton Hall video (Hall Class)

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Non-Standard Shunters of BR – Part III

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To complete this little anthology, it seemed appropriate to include the least well known, and some pretty obscure examples of low-powered locomotives used on British Railways – many at small yards and depots, and dockyards.  Many locos of the sizes described here were adapted, or used for large industrial, engineering, quarries and mining operations, whilst one example remains unique from a major British manufacturer – Brush Traction.

Blue Box8 7

Ruston & Hornsby and its predecessors have a key place in the development of diesel traction, with the East Anglian company boasting one Richard Akroyd – a contemporary of Rudolf Diesel amongst its number. However, Ruston & Hornsby’s contributions to British Rail never fully extended beyond the shunting and service locomotive stock. PWM650 is seen here sporting the earliest BR livery style – used on running department stock too. This example was the first to appear in 1953 and, in common with the Brush design, an electric motor provided the drive to the wheels.                    (c) Lens of Sutton

This final selection of builders provided the least number of diesel shunters to BR in the 1950s and early 1960s, but a number of these have survived – including examples of the Rolls Royce powered shunters from Yorkshire Engine Co. Brush Traction on the other hand supplied only one diesel-electric prototype, which has long since disappeared, whilst many of the departmental varieties, included samples from John Fowler, Hibberd and even an aeroplane manufacturer from Bristol. Some of these were curious shunting types indeed for a nationalised railway, but were nonetheless an essential part of the organisation, whether on standard or narrow gauge tracks.

Clink on the image below to read on: 

Non-Std Part 3 Cover

 

Useful Links & References:

 

Atomic Trains

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Back in the early 1950s, nuclear power was very fashionable – much like electricity was 50 years earlier – and numerous ideas for its uses were produced. Some were mad, some were bad, and some just plain crazy – at least for land transport, since as we know, a variety of submarines and ships are powered by nuclear reactors. On land, aside from a crackpot idea dreamed up by Ford, for a family car with a nuclear reactor in the boot, the potential for ‘atomic trains’ was seriously investigated 70 years ago.

In fact, I was prompted to have another look into these ideas by a letter I received in 1990, which suggested that “…could render main line electrification unnecessary the development of a nuclear powered locomotive.”

In fact, the writer of the letter made these interesting points about its potential use:

“The nuclear-powered locomotive would combine the advantages of conserving fossil fuels with the use of simple trackside installations and would provide quite exceptional endurance without refuelling. The longer the network the greater would be the advantages, especially on those where a small number of train movements per day combined with high carrying capacity, whether passenger or goods, are involved. The East Coast line from London to Scotland would make an ideal test route, and countries like China, the USSR, Brazil, South Africa, etc would be natural customers.”

The problem perhaps at the end of the 1980s, was that people were so intimately wedded to their cars, and road transport, that rails and guided public transport – in the UK in particular – was rapidly facing extinction.
In the 1950s, there were no such inhibitions or potential constraints, and in 1954, a certain Dr Lyle Borst at the University of Utah proposed the 360 ton X-12 locomotive, carrying a nuclear reactor fuelled by Uranium-235, and designed by Babcock & Wilcox. Borst had contacted both the Association of American Railroads (AAR) and numerous railroad companies, with his seemingly far fetched proposal. A key feature of the proposition was its ability to run for months without refueling, and instead of the solid fuel elements, the reactor was intended to use uranyl-sulphate (U-235) and water solution. The type of reactor design was described as an Aqueous Homogeneous Reactor (AHR).

The practicalities of getting power to the rails in this example utilised what had become commonplace – an electric motor attached to the locomotive’s axles. I suppose they could have used either mechanical or hydraulic drives, but they were of course not the only country experimenting with nuclear technology, and the Soviet Union had a particularly striking looking design – that never was.
In Britain too, the ‘atomic age’ was beginning in the early 1950s, and in its issue for 1st August 1952, the “Eagle” comic had an artists impression of what a nuclear powered loco might look like on British Railways.

British Atomic Loco - Eagle 1952

Now, it is worth remembering that the major UK and US companies employed in electrical and mechanical engineering, wee also heavily involved in the design and construction of nuclear reactors – or as they were referred to ‘atomic piles’. This included the likes of Westinghouse, English Electric, Babcock and a number of others, including – of course – in the 1950s, the Soviet Union, where the state had evolved designs for just such a locomotive.

A decade earlier, during WW2, the German military were advancing plans to build nuclear powered submarines in the mid 1940s, and the use of nuclear power was put forward again in the early 1950s, for a nuclear powered locomotive. Some details of one such proposal are kept in the “Deutsches Museum” www.deutschesmuseum.de in Munich, whilst the illustration shows how it might have looked on the rail network of West Germany.

German Atomic Loco

Also in West Germany in the mid-1950s, Krauss-Maffei were considering building an approximately 35 m long nuclear locomotive; the design was closely related to the well-known V 200 diesel locomotive.

Perhaps though the Russian and American examples had advanced the furthest – driven mostly by the cold war. In the Russian example, it was considered that using nuclear powered trainbs as mobile missile launching pads would make it difficult to detect their positions, and require fewer locomotives than the equivalent diesel or steam hauled trains. Once again, the UK’s “Eagle” comic provided a spectacular illustration:
Nuclear reactors can of course be easily detected through their heat emissions, and they would have been just a more sophisticated – if dangerous – steam locomotive. The projected design looked very dramatic. In fact, I believe the illustration appeared in the British “Eagle” comic in the 1950s, and it shows their “atomic locomotive” pictured alongside an artist’s impression of the new “Deltic” diesel locomotive from English Electric.

Soviet Atomic Locomotive

The work in the USA continued up until the late 1950s, and Professor Borst’s design was even granted a patent by the US Patent Office – but despite the effort that had gone into the design of this unusual locomotive, it never came to life.

X-12 Patent DetailsSo, in all honesty, why, in the late 1980s and 1990s would the idea emerge again – the 1974 oil crisis had passed, and high-speed trains were becoming almost commonplace on every railway network around the world. Electrified lines were – indeed mostly still are – powered by electrical energy generated by a nuclear power station, and although other forms of energy and power generation had not been explored, it became just an uneconomic prospect.

My original letter writer had agreed that electrification was by far the most suitable, both economically and in efficiency of operating, for the short, high-density suburban traffic, but advocating a nuclear hauled locomotive for main line, long distance services. He made these two points:

“The nuclear-powered locomotive would combine the advantages of conserving fossil fuels with the use of simple trackside installations and would provide quite exceptional endurance without refuelling.”

“The East Coast line from London to Scotland would make an ideal test route, and countries like China, the USSR, Brazil, South Africa, etc would be natural customers.”

He then made the suggestion that Britain should see this as an unmissable export opportunity, noting that:

“…. Britain is in a very strong position to develop and sell nuclear railway technology. We have an advanced capability in nuclear power generation, …..”

At the time, there was much turmoil in the British railway industry, with closures, mergers, sales, and the ongoing privatisation activities, I feared this was never likely to go much further than it had 40 years earlier – and it didn’t. The use of hybrid power trains, hydrogen fuel cell powered locomotives and trains has since seen much more development, so the Atomic Train of the 1950s will remain just another engineering idea that will be consigned to Room 101 ….. probably.

A final example of the use of a train based nuclear reactor appeared in patent form in the USA in 2008, with a proposition from one William Gregory Taylor. This time, under US Patent US2009/0283007A1, the inventor claims for pairing an on-board reactor with magnetically levitated vehicles, to quote the abstract from the application:

“This device is a magnetically levitated (maglev) locomotive powered by an on board nuclear reactor. The locomotive carries a small portable nuclear reactor that heats a fluid to boiling, and passes it through electric turbine engines to produce electric power. The fluid/steam then recirculates through cooling radiators condensing it back to liquid before it passes back into the reactors again. The electric power is used to power and cool the onboard electromagnets, which oppose passive permanent magnets or magnetic coils in the roadbed. The onboard reactor is capable of providing greater electrical power than previously described maglev systems. This, in turn, provides greater power to the superconducting electro magnets, which translates into greater lift capacity and greater Speed.”

So maybe it’s not all over yet?

References & Useful Links

 

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Non-Standard Shunters of BR – Part II

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In the first of these posts, I looked at the most widely built 0-6-0 shunters, based largely around the Gardner series of diesel engines, mostly the 204bhp rated design, which was applied to a mechaniucal transmission by a number of builders, and BR workshops.  But they were not the only small diesel shunters bought from manufacturers, and in this offering I took a look at the two most well known Scottish builders.

Adverts

Two of the builders – advertising in the 1950s – who supplied considerable numbers of narrow gauge and mining locomotives, along with number of the smaller BR diesel shunters.

Perhaps uniquely, the world renowned North British Loco Co had build many thousands of steam locomotives over the 50 years to 1953, but its initial forays into diesel traction were less than successful.  It had of course experimented with diesels around the time of nationalisation, and had built a collection of products for mine working – appropriately named the “Miner” series.  But their choice of diesel engine paired with hydraulic transmission – whether from Paxman or MAN – was a risky venture.

2767_North_British_shunter_(30237828911)

Formerly D2420, and renumbered 06003 in the TOPS scheme, this North British built 0-4-0 is the only preserved Class 06 , and seen here at Bury, on the East Lancashire Railway in its final ‘rail blue’ colour scheme.         © Photo: Paul Miller, https://commons.wikimedia.org/w/index.php?curid=4246599

Andrew Barclay, in nearby Kilmarnock had opted for a more conventional approach, and opted for the Gardner design of engine, with mechanical transmissions.

In the main, the lack of sustained success was as much down to the changing nature of freight workings, especially after the pressure mounted on BR to reduce operating overheads, and competition from road hauliers.

Click on the image below to read on ….

Shunters Part 2 cover

Blue Box8 8

North British built D2903, paired with the NBL-MAN engine and hydraulic transmission, with a 335 bhp diesel engine it was almost as powerful as the BR Standard 0-6-0 shunter, the Class 08 from English Electric.            (c) Photo: Lens of Sutton

 

Useful Links & References:

 

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NON-STANDARD DIESEL SHUNTERS OF BRITISH RAILWAYS

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British Railways standard diesel shunter was the English Electric designed 0-6-0, with almost any number of variations of the ‘K’ series engine of 1930s vintage.  This was developed from the 1930s designs used on the LMS, and was the mainstay of goods, and train marshalling yard operations – it seemed almost forever.

However, in 1962 there were no fewer than 666 diesel shunting locomotives in operation on BR, of either 0-4-0 or 0-6-0 wheel arrangement and powered by engines of less than 350 hp.  These “non-standard” types performed a variety of the most mundane tasks, and their earliest appearance was from a pre-nationalisation order to the Hunslet Engine Co. of Leeds, also by the LMS.  Following the end of the Second World War, many more were ordered from various makers.

RPBRLY-3

Captured at Bo’Ness on the Bo’Ness & Kinneil Railway in the 1990s, by then Class 03 073 in its final ‘Rail Blue’ livery, this was one of the Drewry built 0-6-0s, with the ‘Flowerpot’ chimney.     (c) Rodger P. Bradley Collection

By the early 1980s there were only a handful left in service, mainly of the Class 03 0-6-0s built at Swindon, together with samples from Andrew Barclay, Ruston & Hornsby, Hunslet, Drewry Car Co., Hudswell-Clarke, etc.

During BR days, a motley collection of some 11 different designs were in service, carrying out shunting and many other light duties at yards the length and breadth of the country. Although some of the designs dated from the 1930s, the majority were constructed after 1948.

The particular types reviewed here were built at Swindon Works, Drewry/Vulcan Foundry, Hunslet and Hudswell-Clarke.  Each featured either a 204hp or 153hp Gardner diesel engine, and various forms of mechanical transmission.

Click on the image below to read on..

PDF Cover imageUseful Links & References

 

 

 

 

An Italian Odyssey

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Since 1995, I have taken a number of photographs in Italy, at various locations where we have started, ended, or simply watched the trains go by, and I thought it would be an appropriate time to share some of those images on these pages.

Naturally, some of the steam locos were seen in the Science Museum in Milan, including the Ansaldo built 2-8-2 of Class 746, together with the 1,000th locomotive built by Breda – Class 685 No. 600.  Alongside these are examples of the P7 0-8-2T, and R301.2 0-6-0T.  The only other steam locomotive in this collection is that of SNFT 0-6-0T No.1 on the plinth outside Brescia Castle, where it has been since it was selected as the first monument to steam traction in Italy, by the local model railway organisation – the “Club Fermodellistico Bresciano”.

Milan’s cavernous Central Station provides a brilliant backdrop in 2009 to the power car E414-103, built in the late 1990s, and heading an ETR500 high-speed train, shown in the post 2006 livery of grey,white and red.  Another example – E414-128 is shown leaving Verona with a Milan bound service in 2008.

Out on the Milan-Verona-Venic main line, back in 1995, Desenzano-del-Garda was the stopping off point for a couple of the views in the bright sunshine of high summer.  These range from E444-064 a Fiat/Breda built 4,000kW Bo-Bo (These were Italy’s first high-speed locos)  on a Venice bound express, through a pair of E652 series B-B-B types, led by E652-052 on a freight working.  Also seen, is a D.445 diesel No. 1114 – the standard passenger design of the time, on a regional working from Verona.

North of Milan, at Como San Giovanni station, we see an E632 B-B-B from builders Ansaldo heading towards Chiasso and Bellinzona in Switzerland, whilst in the opposite direction, one E656.051 arrives.  Nicknamed “Alligators”, these were the articulated B-B-B design developing some 4,200kW.

Alongside Lake Maggiore, at Stresa, in 2007 we pick up a “Cisalpino” service running through the station these 9-car tilting trains, in this case designated ETR470 followed on from the preceeding ETR450, and 460 series, known as “Pendolino”.   A short time later a northbound service headed through, with E464.285 at the front, with the rear driving trailer – sporting a touch of graffiti.

Heading southbound again at Stresa, a weatherbeaten E652.062 trundles through with a southbound freight, these ABB/Ansaldo/Marelli built locos deliver some 4,950kW, and are now exclusively used on freight.  This was followed by a local/regional service with E633.110 at the head, covered in a liberal amount of graffiti.  This class dates from the 1980s, and was the forerunner of the E652 on its freight working.

Back out to the Milan-Verona-Venice main line in 2014 and 2017, a varied collection of stock is seen entering and leaving Verona Porta Nuova.  An E464 – No. E464.409 puts in an appearance on a Tren Nord working, in its shiny green livery, and an assortment of ETR high-speed trains on the Frecciabianca (ETR500), Frecciarossa (ETR500), and the Swiss liveried version of the ETR610 series.  In Switzerland, these are classed as RABe 503, but have also been known as the Cisalpino Due, since they are in effect the upgrade or replacement for the tilting Cisalpino trains seen at Stresa, back in 2007.

Hope you enjoy.

-oOo-

 

Diamonds Were Forever

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The Great Western Railway had, since its inception been the loner amongst the rai1ways of this country. Beginning with its adoption of Brunel’s broad gauge in the early nineteenth century, this tradition of individuality was carried on beyond the nationalisation of the railways in 1948 to the introduction on the Western Region ten years later of he first main-line diesel hydraulic locomotives. Ostensibly the idea was to assess the relative merits and demerits of the hydraulic transmission as compared with the electric variety. The diesel types with hydraulic transmission were restricted entirely to the Western Region; perhaps the ghost of Brunel and his advocates had something to do with this! Nevertheless, with the implementation of the National Traction Plan in 1967, the D600 class “Warships” days were numbered. But they deserve their place in the story of diesel traction on Britain’s railways, marking as they do, a milestone in the history of motive power development in this country.

D600 on test run - no number

Brand new, straight out of the box – an unnumbered “Warship” on a proving run from the North British Loco Co works.

Five locomotives of this type were ordered from the North British Locomotive Company in November 1955, eventually to become Western Region “Warships” numbers D600 to D604. These locomotives were built under the pilot scheme of the British Transport Commission’s Modernisation and Re-equipment programme for the rai1ways. It was proposed under this scheme to introduce specific types of diesel locomotives in four broad power groups, and to subject them to a period of intensive trials in order to evaluate the advantages and disadvantages of each type.

This was, however, not to be, and shortly after the programme was launched a re-appraisal was carried out, following which, bulk orders were placed with contractors, in many cases hardly even before the first of the prototypes were outshopped. Some of these proved their worth, but not until after much re-work of major components, including for the many engines fitted to the Brush-Sulzer Type 4 locomotives was undertaken.

Back to the Pilot Scheme orders, the North British Company delivered the first locomotive of the D600 class in 1958.  These “Warship” class locomotives were powered by Anglo-German engines – two N.B.L./M.A.N. L12V 18/21S to be precise – each with a continuous output rating of 1000hp, at an engine speed of 1445 rpm. This placed the design in the category of locomotives with high-speed engines – another area for comparison and trials under the Pilot scheme – with many others sporting medium speed engines.

They were carried in a full width body over two three-axle bogies, and the central axle of each bogie was ‘free, with the engines driving the axles through a Voith/North British L306R hydraulic transmission. This was denoted as the A1A-A1A wheel arrangement, which could to a degree be seen as a disadvantage when it came to getting sufficient power to the wheels to start and haul a train.

When I first penned this article, I wrote:

“Contrary to popular opinion, diesel locomotives are not merely tin boxes on wheels, belching forth voluminous clouds of noxious fumes; these locomotives even had mainframes!”

The mainframe part of that comment was clearly true, but with the benefit of hindsight, the “clouds of noxious fumes” was a bit much. But this was at a time when you could see the pollution of steam trains, but we were yet to become more aware of the hidden dangers of the diesel exhaust.

D600 diagramStructural Details

The underframe was built up from mild steel plate and sections, covered with steel plate forming a continuous floor. The double plate frame 
bogies were fabricated from 7/16 in. thick plates, with cross-stretchers
and headstocks riveted to the side members. Double swing link bolsters provided support for the weight of the whole of the locomotive and
its contents. These were in turn fitted with four bearing pads on each bogie, with the final drive gear train, and wheels and axles fitted with “Timken” roller bearing axleboxes with a wheelbase of 15ft equally divided. The driven wheels were 3ft.7ins. in diameter, whilst the centre pair were 3ft. 3 ½ ins.

Dimensions

At least one item that stands out in the list of particulars given is the weight of the locomotive.

At over 117 tons, these were really heavy machines, especially when compared with designs that appeared less than a decade later, and typically delivered around 2800 h p, for less than 100 tons of locomotive. This power-weight challenge faced by the first “Warships” stands out even more when compared with the D800 series of Locomotives, which for the same power weighed a mere
 78 tons. Nearly 40 tons less! The D600’ s were certainly very solidly bui1t!

D600 NBL-MAN Engine

The NBL/MAN V12 engine on a stand, waiting to be installed in the locomotive. One of the earliest high-speed diesels, but it did prove to be less reliable in service than hoped, and BR had adopted medium speed designs for the majority of locomotives.

Theory has it (or possibly had it, theories may have changed!) that the less
 of its own weight a locomotive has to haul, the greater the weight of the train that can be hauled, for the same engine power. With a power/weight ratio of 17.1 hp/ton this certainly compares unfavourably with the D800 series, which for the same power had a power/weight ratio of slightly more than
 25.6 hp/ton. A further comparison with the most recent freight locomotives in use on Britain’s rail network – the Class 70 – shows that they have a power to weight ratio of over 29hp/ton.

The pressure charged NBL/MAN 12 cylinder ‘vee’ engines were flexibly mounted on fabricated steel section underframes, which was intended to mitigate stress placed on the engine from shock loading under accelerating and braking conditions. The engine crankcase and cylinder blocks were built up from steel plate, the former incorporating cast steel bulkheads carrying the main bearing housings, the crankshafts being hardened and ground alloy steel forgings.

D600 bogie

A bogie being assembled in the works of the North British Loco Co

The hydraulic transmission installed by Voith/NBL included three separate torque converters, each of which was designed to cover three separate speed ranges, with each one arranged to take over at the appropriate road speed automatically.  The final drive to the outer axles on each bogie was completed through a pair of Hardy Spicer cardan shafts.

Braking equipment was provided by Westinghouse air brakes for the locomotive, with four brake cylinders (10ins x 8ins) on each bogie operating clasp brakes to each wheel. A separate air brake handle was provided, which operated the locomotive brakes only, whilst a proportional valve ensured that application of the train vacuum brake gave a proportionate application of the locomotive’s air brake.

Also noted in the list of particulars is a water tank having a capacity for 1000 gallons of water. The reason for this was that since the locomotive were introduced at a time when only steam heating of locomotive hauled stock was available, all diesel Locomotives designed under the modernisation plan were provided with steam heating boilers. In this case they were “Spanner” boilers, operating at a pressure of 80lbs/sq.in. This latter item contributed a great deal to early diesel types weight, and occupied a not inconsiderable amount of space.

D600 Cab and nose

In an attempt to reduce the overall weight, the cab and nose of the “Warships” was constructed from lightweight aluminium sheet and sections.

Another feature that added greatly to the weight, particularly in this case, was the use of heavy steel fabricated construction techniques. The British Transport Commission’s insistence on using thicker plate than necessary was the principal reason for using these techniques, resulting in a sturdy but unnecessarily heavy structure. This was also the first product from the North British Loco. Co. for the home market, other than shunting types previously built. As such, no doubt there was some experimentation in the design of such a totally new locomotive type to the British railway scene.

External design was left to the manufacturer, and as a result the locomotive types produced under the ‘Pilot Scheme’ all differed in appearance, and unlike the range of ‘Standard’ steam locomotives there was no ‘family likeness’. The D600 series ‘Warships’ were perhaps one of the more attractive designs. The stressed skin framework of the bodysides was punctuated with a honeycomb of grilles, covering the various vents 
and air intake points.

NBL Advert

NBL’s advert in the 1958/59 railway official’s directory, with the D600 series shown in the top sketch.

In addition to the doors providing entry to the driving cabs at either end, windowed access doors were provided
adjacent to the engine compartments, and sections of the roof were made detachable for installation and removal of equipment. The cabs themselves were provided with two large flat windscreens, each having independently operated wipers.

It should be noted here that the majority of diesel types introduced at that time had three windscreens. In fact, apart from the ‘Deltics’, the twin windscreen arrangement was for a long time restricted entirely to the Western Region’s diesel-hydraulics. Another feature peculiar to the ‘Pilot Scheme’ types, was the provision in each nose end of a flexible bellows connection, for use when through passage was required between locomotives when worked in multiple.

Two fans mounted in the roof were arranged to draw cooling air through the twin bank ‘Serck’ radiators mounted just to the rear of each cab. A third grille, positioned mid-way along the roof, served as an engine room vent. The only other apertures were the exhaust outlets, and the output from the ‘Napier’ pressure charger.

Since the train classification headcode panels were not introduced until I962, these “Warships” were provided with train classification discs, and head/tail lamp brackets, as per the then standard steam traction practice. Twin air-operated warning horns were provided in each nose end. Standard side buffers and screw coupling draw-gear were also fitted at each end. Other nose connections were provided for vacuum brake and steam heating pipes, and jumper sockets for control connections when worked in multiple.

Numbering and livery

This series of locomotives, as already mentioned, was ordered from the North British Locomotive Co. at the time of introduction of the re-equipment programme, on I6th November I955. Delivery was due to take place fifteen months after the order was placed, which should have been completed by late I957. As often happened, delays in delivery caused their introduction to be put back to 1958.

A list of numbers, names and building dates is given below:

Numbers & Names

Livery styles for British Railways diesel locomotive Livery
prior to I956 followed basically that scheme applied to the former LMSR diesel-electric units 10000/10001 – black with aluminium lining and raised numerals. Bogie sideframes and sundry details were also picked out in aluminium. Commensurate perhaps with the new era about to begin, all new diesel locomotives were turned out in the new ‘standard’ green livery. This was applied to the nose, body side panels, and that section of the roof extending over each cab and the entrance doors. The roof was medium grey between cantrails. The bogie and underframe details were black, with buffer stocks and the beam itself in the vicinity of the coupling hook picked out in red.   Handrails and the aluminium beadings to the cab windows, windscreens and warning horn mountings were bright polished. Nameplates and the new style B.R. crests were carried on the lower and upper bodysides respectively, and on the same centreline between the engine room access doors on either side. The nameplates themselves were similar to ex GWR locomotive nameplates; cast in brass with raised lettering on a red background.

NRM_D601_Ark_Royal_nameplate

The nameplate of D601 Ark Royal on display at the National Railway Museum. This was the original style, but if a member of the class was painted ‘Rail Blue’, the background was changed to black.            Photo: Geof Sheppard – Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=9680512

The scheme of numbering diesel locomotives introduced at this time, including the use of the prefix ‘D’, was developed in order to avoid any confusion which might have arisen using six figure unit numbers. Also it was considered desirable to allocate a block of numbers to individual classes or types, and the problems were thus overcome by use of the ‘D’ prefix. The unit numbers for the D600 series were Gill San transfers applied to the cabsides, under each of the four droplights. Directly under each number, were the North British works plates, and the WR route restriction colour discs, which in this case were single red. They were of course already scrapped when British Rail introduced the TOPS renumbering, which had been first been considered by BR in 1968, following work done in the USA by IBM and the Southern Pacific Railroad. The system was purchased by BR – including the source code – together with an IBM System 360 mainframe computer, and its implementation was supported by Southern Pacific personnel.

Lens of Sutton D600 'Warship'

D600 “Active” on one of the class’s main roles, hauling expresses over the South Devon Banks. A key service for a short time was the “Cornish Riviera Express”.                           Photo: Lens of Sutton/RPBradley Collection

The oddest aspect for the North British Warships was perhaps that they were allocated the new classification – Class 41 – but which was never carried.

In later years, ½ and full height yellow warning panels were applied, which did nothing for their appearance, and the same might be said of the ubiquitous ‘Rail Blue’ livery, and the double arrow symbol seen on D600 whilst awaiting the breakers torch at Barry. Headcode boxes had also been fitted in their mid to late years, since in 1960, the train class, route and reporting number were combined into a single four character display. So, the old style discs were dispensed with and all new locos built after that were fitted with a roller-blind display that could display the full reporting number. Of course this meant for some – such as the North British “Warships” a pair of two character boxes were fitted to either side of the loco front.

Performance


These locomotives were the first 2000hp main line types to be placed in service on the Western Region, and were intended for express Passenger and other top link duties. A demonstration run on Monday I7th February I958 was made by No.D600, hauling a nine coach train from Paddington to Bristol and back. It is interesting to note, in connection with this run, that in order to demonstrate the locomotive’s ability, on the return journey from Bristol, soon after leaving, one of the engines
was shut down, and the remainder of the trip completed on a single engine.

The first regular top link passenger work for the class commenced in June I958, with the ‘Cornish Riviera’ express. Also during this month, a series of comparative tests was made, with the second of the class D60I, and various classes of 4-6-0 steam locomotives. The trials took place between Newton Abbot and Plymouth. It was thought that summer Saturday services in particular would need piloting over this route, and since there would not be enough diesel locomotives available double heading trials were carried out with steam locomotives in order to determine optimum loads and timings over this route. Unfortunately for the North British “Warships”, the D8XX series Swindon “Warships” was appearing in ever increasing numbers.

EPSON scanner image

‘Warship’ Diesel-hydraulic at Reading (General) on an Up express, looking west towards Reading West Junction, Swindon, Bristol, Taunton and the West; ex-Great Western main lines from Paddington. The train, running through on the Up Slow line, is the Summer 08.15 Perranporth – Paddington, headed by 2,000 hp Type 4 A1A-A1A ‘Warship’ No. D600 ‘Active’                                     Photo: Ben Brooksbank, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=15149523

This fact, coupled with somewhat varied standards of engine performance, notwithstanding a lack of confidence by maintenance staff in their reliability, gradually forced this class out of the principal duties. The overall performance of the first two, D600-1 was rather better than D602-4. This difference has been attributed largely to the fact that the engines for the first two were actually built in Germany, whereas North British made those for D602-4 under licence. No doubt, there is more than an element of truth in that statement, but perhaps it could also explain the reason for the long gap between the delivery of D600/1, and D602-4.

North_British_Type_4_D601_(8392564224)

A sad end for this pioneering class of diesel locomotives – here D601 “Ark Royal”, and an unidentified sister, are seen at Woodham’s Barry scrapyard in October 1968. The second loco is in rail blue, complete with full yellow ends, and the double arrow symbol, whilst D601 still retains green livery and ½ height warning panels. Both have been transformed with the roller blind headcode boxes stuck to the nose.                                                                 Photo: Hugh Llewelyn – D601Uploaded by Oxyman, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=24382933

All five were based for the most part, at Plymouth Laira
 depot, and in their latter years restricted entirely to Cornwall. In 1967 their demise was foreshadowed by the implementation of the National Traction Plan. With this scheme, it was proposed to ‘phase out’ classes of locomotive coming under one of the following three headings:

  1. Elimination of types that had given trouble
  2. Those having excessive maintenance cost
  3. Those classes of low numerical strength

Once again, unfortunately these “Warships” came under all three headings. In 1967 they were transferred to South Wales for a short time, working mineral trains, in place of English Electric type 3’s. This proved to be their final duty, since they were returned to Laira in December 1967 for withdrawal. In July 1968, after being stored for seven months, D600/1 were sold to Woodhams, of Barry and D602-4 to Cashmeres at Newport for scrap.

Sadly, despite its pioneering status, not one of this class of diesel-hydraulic locomotives was rescued for preservation – although the nameplate of D601 “Ark Royal” survives in the NRM at York. But, hydraulic transmission was not a complete failure for BR, since the second “Warship” class locomotives, the Class 42, were very successful, and in turn, they were followed by a final design, the Class 52 “Western” series. But by the time these appeared, the decision to use diesels engines with electric transmission had been made, and these too were to suffer a similar fate to the diesel-hydraulic pioneers.

Useful Links & References

  • “Diesel-Hydraulic Locomotives of the Western Region”;  Brian Reed, pub; David & Charles 1974; ISBN 0715367692
  • “Diesels Western Style”;  Keith Montague; Pub; Oxford Pub. Co. 1974; ISBN 0902888390
  • “Giants of Steam – Story of the North British Locomotive Co.”;  Rodger Bradley; Pub; Oxford Pub. Co., 1995; ISBN; 0860935051

 

-oOo-

Eurostar – From TMST to E320

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Eurostar Nose at NRM_RPB pictureThe recent withdrawal and scrapping of the first generation of Eurostar trains comes 30 years since the contract for building them was awarded, and barely two years after the last refurbishing was completed. In fact, the international consortium’s tender was submitted in December 1988, with the contract awarded just a year later. The Channel Tunnel was a complicated project, and today, the UK has much less involvement in its operation and planning than ever before. Eurotunnel International Ltd., who run and manage the services and infrastructure, from London to Paris, on what we have termed HS1 is actually majority owned by France, Belgium and Canada. Though to be fair when HS1 was sold off, the UK Government retained freehold ownership of the land, and the infrastructure ownership was just a 30-year concession to a Canadian business and a pension fund.

The International Project Group (IPG) was set up by the three national railways of Britain, France and Belgium in 1988, and the year before, a grouping of some of the most famous names in the rail industry was set up to bid for the work of building the new trains. This joint venture was known as the Trans-Manche Super Train Group (TMSTG), and included:

Screenshot 2020-03-30 at 09.57.57However, in the late 1980s there was a lot of what we now describe as ‘churn’ in the rail industry, with numerous takeovers, and amalgamations, and British Rail Engineering Ltd left the consortium completely, as did Metro-Cammell. GEC merged with Alsthom and bought Metro-Cammell, and it was back in the consortium almost as soon as it left.

Building mapWhen the dust of all these changes had settled, the fixed formation trainsets were built at several locations in Belgium, Britain and France, between 1992 and 1993. Bombardier Eurorail, which had taken over the two Belgian companies built trailer cars, with Brush supplying traction motors, De Dietrich in France the powered trailer cars, and Faiveley Transport the pantographs and control systems. The newly merged GEC-Althom took on perhaps the lion’s share of the work in 13 different locations across France and England.

TMST No. 3002

The classic TMST, set number 3002 seen here in September 2013 on its way from London to Brussels, photographed at Enghien, Belgium.  Photo © Andy Engelen

They were perhaps the most complex machines introduced for what was seen as a challenging operation. They were essentially based on the TGV Atlantique series for SNCF, but with 18 coaches placed between two power cars – but they are a pair of 10-coach half-trains connected back to back. They were designed to operate on three different electrification systems, and the power systems included some of the most cutting edge technology at the time.   Design and manufacturing processes were also enhanced to take advantage of the then current ‘Lean Manufacturing’ techniques, in the UK, France and Belgium.

TMST in build_1

Attaching a TMST power car to its bogie at Alsthom’s factory in France, alongside its predecessor – the TGV Atlantique set on the adjacent track.

The GEC-Alsthom built TMSTs have an installed power on 25kV AC of 12.2 MW, and a complete train weighs in at 750 tonnes, and an overall length of 294 metres, carrying 750 passengers, and noted as Class 373 in Britain.

The new 16-coach e320 trainsets are derived from the Siemens ICE3 trains for Germany, from which Siemens developed the “Velaro” range, which has been used in a number of other countries, including Russia and Spain. The new Eurotunnel trains – noted as Class 374 in Britain – require a less complex power equipment and contact system, compared to the TMSTs, although much of the power technology is a development of that used previously.  Although no longer needing to operate on 750v DC 3rd rail lines in Britain, they are still required to operate on 25kV AC and 1.5kV / 3kV DC voltage systems between London, Paris, Brussels and beyond. A key development in the power train has been the placing of the traction equipment beneath the vehicle floors, where on the original TMSTs the hardware was installed in the leading and trailing power cars, with the trains being essentially a ‘push-pull’ format.

Velaro-Hochgeschwindigkeitszüge: Eurostar e320 / Velaro Eurostar e320 high-speed trains

The new kid on the block – an e320 on test at the Siemens Mobility test site in Wegberg-Wildenrath – a classic in the making, and based on years of development from ICE to the Velaro platform.   Photo: “www.siemens.com/press”

These new cross channel trains are actually much more powerful than their predecessors, with a maximum rating of 16MW, delivered through 32 of the 64 axles, and carrying 900 passengers, with each car or coach being part of the power train and drive. The reason for the ability to increase passenger numbers is simply because the new trains have power converters carried below the vehicle floors, together with other changes in bogie and running gear design. Overall appearance is changed too, with styling – internal as well as the exterior – provided by the Italian design house ‘Pininfarina’, whilst the combination of aluminium and GRP mouldings are standard for coach bodies.

One of the main challenges faced by Eurostar occurred when the contract was placed with the builders. In 2009, Alstom launched a series of complaints and legal actions, claiming that the new Siemens design would breach Eurotunnel safety rules, but the courts rejected this. Alstom then lodged a complaint with the European Commission in 2010 over the tendering process, and in 2011, a last ditch claim was made through the UK High Court, where the company’s claim of “ineffective tendering process” was rejected. By 2012, Alstom called off all legal action against Eurostar, perhaps helped by SNCF taking up a contract option to buy another 40 of the high-speed double-deck trains. Then finally, the first of the new e320 series was unveiled in November 2014, and entered passenger service in 2015. On November 20th, one of the 16-car sets formed the 10.24 from London St Pancras to Paris Nord, and they have now been operational for almost 4 years.

Although these new Eurostar trains have had a difficult birth, with the parent operating company’s indication to extend its cross-channel services to Amsterdam and into Germany, their future looks promising. In fact, just over two years after the first e320 began operating, a new service from London to Amsterdam was started, with a further expansion of train numbers on the route in 2019.

Technical Comparisons

TMST Dimensions

e320 No 4016

New e320 train 4016 from London to Brussels, photographed at Enghien, Belgium in July 2017.        Photo © Andy Engelen

Power equipment – state of the art technology

A key component of both designs of train has been the power conversion equipment. The TMST adopted high-power GTO thyristors for this key component, which was at that time the ‘state of the art’ in traction power technology, all of which were included in the ‘Common Bloc’ sub-assemblies.   These were the heart of the TMST, and assembled at GEC-Alsthom’s Preston works, with the Trafford Park (Manchester) factory supplying the ‘plug-in’ semiconductor modules, with other components coming from GEC ALSTHOM factories at Belfort, Tarbes and Villeurbanne in France, and Charleroi in Belgium.

Eurostar Cab under construction

Eurostar Power Car under construction

TMST Power car under construction – the upper view is of the the steel and aluminium body after painting, and shows the steel framing of the bodysides. The lower view is the one-piece GRP moulding for the power car nose.        Photo RPBradley Collection / GEC-Alsthom

TMST Common Bloc Assembly

The heart of the TMST Powercar is the ‘Common Bloc’, here seen assembled at the Preston Works of GEC-Alsthom in 1992.         Photo RPBradley Collection / GEC-Alsthom

Naturally, the technology has moved on, and the new e320 trains use IGBT technology, together with the now commonplace asynchronous traction motors on multiple axles. The original TMST trains included the GEC-Alsthom designed units mounted – ‘Common Bloc’ and MPC’s – in the leading and trailing power cars. In contrast the new Siemens design has the equipment distributed under the floors of the 16 cars, allowing the extra passenger space. With a traction power of 16MW, Eurostar e320 can reach a maximum operating speed of 320km/h (200mph). It is provided with eight identical and independent traction converter units designed to operate on 25kV AC and 1.5kV / 3kV DC voltage systems, and delivering power to the 32 driven axles. On the roof, each train carries eight pantographs for the different power systems and contact line types in Netherlands, Belgium, France and the UK.

3rd rail contact shoe

The appendage that is no longer needed on the e320 Eurostar trains is the 3rd rail contact shoe seen in this view.

One item missing from the new Eurostar trains is of course the need to collect power from the old Southern Region third rail contact system – no more 750V dc contact equipment, and no embarrassing chugging along from the Channel Tunnel to London. In the original build this was of course the only way to get from Waterloo to the Tunnel, but after HS1 was completed, the need was no longer there. The e320s do still have to cope with different voltages – 1.5kV/3kV dc, in Belgium and the Netherlands – alongside the almost universal 25kV a.c., but all contact systems are overhead.

Control and signalling

Back when the GEC-Alsthom TMST trains were being built, the use of on-board computers was still in the early days – much was often made in the press of the novelty of microprocessor control of traction motors, wheelslip and slide, which are now commonplace. The control systems now all encompass software and computer control of every aspect of the train’s operating functions, alongside the essential interactions with legacy lineside signalling adding to the complexity of the latest designs. The drive towards implementing ERTMS/ETCS across the principal main line and high-speed routes has been happening in a piecemeal manner – obviously perhaps – but it’s not in place everywhere. Different national systems have evolved and implemented systems that meet their own operating criteria and specifications, and the new Eurostar trains still have to have and meet these different requirements.

The train’s signalling, control and train protection systems include a Transmission Voie-Machine (TVM) signalling system, Contrôle de Vitesse par Balises (KVB) train protection system, Transmission Beacon Locomotive (TBL) train protection system, Runback Protection System (RPS), European Train Control System (ETCS), Automatic train protection (ATP) system, Reactor Protection System (RPS) and Sibas 32 train control system.

TMST Drivers' desk

The driving position of the original TMST – still looks like an aircraft cockpit, and we’ve moved on again since this was built. Photo: RPBradley Collection

All of this technology is plugged into the control panels and displays at the driver’s desk, whilst concurrently assessing, evaluating and storing information about each aspect of the train’s performance. Real time information is passed back to both the train operating and control centres, whether in Paris, Brussels or London, and a log of any and all messages about the condition of moving, and some non-moving components is logged on-board and transmitted to the maintenance centres.

Bogies and drives

Back in the 1990s, the original TMST sets were equipped with Jacobs bogies shared between adjacent carriages, as was the practice on the TGV sets from which they were derived. The coaches next to the power cars and the two central coaches (coaches 9 and 10 in a full-length set) were not articulated.

Trailer Bogie

TMST trailer car bogie – 4 brake discs per axle.                Photo: RPBradley Collection/GEC-Alsthom

The e320 (Class 374) bogies are essentially the SF 500 design, used on DB’s ICE3 trains, and adapted for either driven or non driven (trailer) bogie operation, with two bogies per coach. The bogie frame itself is an ‘H’ frame design with traction motors mounted laterally on motor bogies, driving the motored axles through a spiral toothed coupling. The now well-proven air suspension system has been adopted for secondary suspension.

Motor Bogie

TMST motor bogie.                Photo: RPBradley Collection/GEC-Alsthom

The axles, suspension and bearings are fitted with a range of sensors, all needing to be cabled up to the vehicle body. The cables on the bogie are initially routed to a form of terminal box in the centre of the bogie, and from there are routed up to the vehicle, suitably contained and protected from any environmental damage. Modern systems such as those used on these trains are able to provide diagnostic information, and to some degree early detection of impending operational problems.

Much more than a hi-tech equivalent of the old wheeltapper, using the back of his hand to detect a hot running axle bearing. For instance, the sensors on the e320 bogies are an integrated system to monitor wheelsets, bearings, suspension and damper performance, and the overall condition of the bogie. Both powered and trailing SF 500 bogies include mainly identical components, which makes for ease of replacement, maintenance and repair. All of the bogie design and successful operation is attributable to the ICE train project, and development through ICE1, ICE2, and the most recent ICE3 trains.

Velaro_E_bogie

An SF500 bogie fitted to the same Siemens ‘Velaro’ platform as the e320 Eurostar trains. Photo: Wikimedia Commons, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=57593082 

The bogies also carry the rail level braking equipment, and the Eurostar e320 is equipped with three separate technologies – a regenerative braking system, a rheostatic brake system, and a pneumatic brake system.  In the original TMST sets (Class 373), the traction motors on the powered axles provide the rheostatic braking with conventional clasp brakes operating on the wheel tread.
 The non-powered axles have four ventilated disc brakes per axle.

There has been significant progress in the development of braking systems through a wide range of options, including the use of different materials in the brake discs, and magnetic track brakes, which were used on the DB ICE3 trains. But high-speed stopping demands a sophisticated, multi-layered braking system to ensure that passenger safety is maintained, and the technology used is another story.

Bodyshells, passenger facilities, and information systems

GEC’s TMST original trainsets were built in two forms: long and short. 31 trainsets were long, with 18 trailers between two power units, whilst the remaining 7 were short, with only 14 trailers. The short trainsets were intended for services north of London, to destinations such as Manchester and Glasgow, where platform lengths are insufficient to accommodate longer trains.

Eurostar Trailer Car under construction

TMST Class 373 trailer car under construction.                   Photo: RPBradley Collection/GEC-Alsthom

TMST coach bodies were made from a combination of traditional steel, aluminium, GRP and composite materials. The vehicle dynamics have changed dramatically, with higher speeds demanding changes in structure, greater strength, but lighter weight, to take the stresses demanded by modern train operations.   This was the case with the original TMST trains, and as can be seen from the images, the nose sections were particularly suitable for the use of GRP and composite materials. In terms of material, little has changed in the structures, although the e320 series makes much more use of aluminium, and the aerodynamics have changed significantly, as a result of the advances in technology.

TMST Power Car under construction

TMST Class 373 Power Car under construction.                   Photo: RPBradley Collection/GEC-Alsthom

Construction of the original TMST trains was carried out at GEC-Alsthom’s Washwood Heath plant in Britain, La Rochelle and Belfort in France, and at the Bruges works of Brugeoise et Nivelles BN (now Bombardier).

The new “Velaro” based e320 trains were built from 2011 at Siemens’ works at Krefeld, near Dusseldorf, followed by testing at the company’s Wildenrath location. Whilst the new trains were due to enter service in 2014, due to delays in gaining full TSI approval, the ‘rollout’ to operational service did not take place until 2015.

Overall, seating has increased from 794 to 902, with facilities at the seats that allow tarvellers to plug in to charge mobile phones, make use of USB ports, and of course on-board Wi-Fi systems. We tend to demand a little more these days than a newspaper (in 1st class) and a cup of earl grey, as we stay connected to business, family and friends, wherever we are, on the move or not. Passenger information systems have evolved to meet the changing needs of the travelling public too – less on-board passenger information displays perhaps, more “download the app” and check for yourself. That said, getting information to and from the moving train is a vastly different world of track to train communications compared to the original setup.

Operations

TMST Numbers

As noted previously, the original TMST trainsets came in two kinds: long and short. 31 trainsets are long, with 18 trailers between two power units. The remaining 7 are short, with only 14 trailers. The short trainsets intended for services north of London, other than a brief spell to help the newly privatised GNER train company out, were never fully used, and were later transferred to France for other duties. It had been suggested that a reason for not running the services beyond London was down to the ‘crude design’ of British Rail overhead contact lines, and routes across London. Another reason advanced was the growing numbers of budget airlines. The idea that the overhead contact system was less sophisticated is unlikely – especially in view of the operation of high-speed “Pendolino”, tilting trains on the main lines. The complexity of finding a route across or around London, along with the lack of investment was probably the most obvious reason.

The TMST’s primary operation was of course to run through the Channel Tunnel between London, Paris and Brussels. However, whilst in France and Belgium, high-speed electrified routes were well used, in Britain, between the Channel Tunnel and London, only the existing 3rd rail electrification was actually on the ground. A high-speed (HS1) was being planned, but as a temporary measure, the powerful new TMST sets simply trundled across the 60 or so miles to a temporary “International Station” at London’s Waterloo.

In contrast to the TMSTs, the new e320 series trains were planned to develop the core services from London St Pancras, to Paris Gare du Nord, and Brussels Midi. To meet anticipated competition from DB in particular, Eurostar’s new trains were also pencilled in to provide services to Amsterdam, Frankfurt, Cologne, and other destinations in France. The original TMST sets were not capable of running under the wires into the Netherlands, and the new trains certainly give Eurostar that option, and even more flexibility.

Modifications and upgrades

In 2004/5, only 22 of the original TMST sets were in daily use, and the interiors were looking jaded, and so Eurostar decided to provide these ageing speed demons with a new interior look and colour scheme, but that was not the last change. As the original TMST sets were nearing the end of their working life, around the time that Eurostar was picking the supplier for its new generation trains, another refurbishment was planned.   This was a slightly more extensive update, beyond new colours and styling changes, upgrades to traction systems were proposed, to get the trains to work operate beyond 2020. These final upgrades were delayed, instead of 2012, the first revamped TMST did not appear until 2015.

Both of these upgrades could be construed as papering over the cracks, especially looking around at how traction drive technology, and indeed the whole technology of the train had developed since they were built, it was perhaps their last hurrah. The new e320 series are state of the art, both in technology, aerodynamics, construction and operation, and were quickly going to replace the pioneers on these international services.

End of the Line

In 2010, the replacement trains ordered by Eurostar of course led to the withdrawal of the original TMST sets. They have had almost 27 years of international service, since first taking to the rails in 1993, and 21 years before the new e320 series started operations in 2014.

In 2016, Eurostar sent the first of the TMST (Class 373) trains for scrap at Kingsbury, by European Metal Recycling (EMR), but by early 2017 the exact number of sets to be scrapped had not been confirmed. The working theory then was that between 17 and 22 of the TMST, Class 373 trains would be scrapped. That said, a small number of the original trains were set to be refurbished, complete with Eurostar’s new livery, and reclassified as e300. Amongst the reasons for this, one source noted that because the new e320 series trains are not fitted with the UK’s AWS magnets, they can’t work into Ashford, or apparently, Avignon in France. Ah, well, off to the scrapyard for the others.

In December 2016 the 3rd Class 373 had arrived at Kingsbury, to be scrapped by European Metal Recycling, and re-use was now out of the question, but at least some of the materials were being recovered and recycled. In fact 50 of the original 77 Class 373 TMST still operate Eurostar services, with 27 withdrawn between December 2014 and January 2018. Of these, 16 were scrapped by EMR, one had been sent to the National Railway Museum in York, and two retained in France at the Romilly Technical Centre, with two others being sent to the National College for High-Speed Rail at Doncaster and Birmingham in England. At least one of their number are still awaiting their fate in a siding as the vegetation starts to make inroads into the structure – along with a liberal amount of graffiti. A sad end for a ground breaking high-speed train design, though not as sad as at least one set, one of the refurbished sets, which was – and still is crumbling to dust at Valenciennes.

Abandoned Eurostar 3017:3018 near Valenciennes

One of the dying breed – a TMST Class 373 set awaiting its fate at Valenciennes in the Nord Region of North East France, close to the border with Belgium in 2016.             Photo © Andy Engelen

Here’s the next generation:

Velaro-Hochgeschwindigkeitszüge: Eurostar e320 / Velaro Eurostar e320 high-speed trains

The new generation does have a solid reputation to live up to – and it certainly looks the part.           Photo: “www.siemens.com/press”

Passiondutrain.com

A Eurostar Velaro E320 set 4023/24 on the 9031 Paris/London St Pancras service at Longueau , near Amiens    Photo:   By BB 22385 / Rame 4023-24 E320 détourné par la gare de Longueau / Wikimedia Commons, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=57593082

Useful Links

 

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Rail Franchises Suspended By Covid-19

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Emergency measures introduced by the UK Government have been set out today, by Transport Secretary Grant Shapps, which include suspending the normal rail franchises for a period of 6 months.  These are defined by the DfT (Department for Transport as Emergency Measures Agreements, and the train operating companies will be given the opportunity to “transition” to the new arrangements.  From the DfT:

“These agreements will suspend the normal financial mechanisms of franchise agreements, transferring all revenue and cost risk to the government. Operators will continue to run day-to-day services for a small, pre-determined management fee. Companies entering into these agreements will see a temporary suspension of their existing franchise agreement’s financial mechanisms for an initial period of 6 months, with options for further extension or earlier cancellation as agreed.”

Full details are here:

Rail emergency measures during the COVID-19 pandemic

Further coverage appeared in newspapers:

Screenshot 2020-03-23 at 11.55.34

 

www.theguardian.com/world/2020/mar/23/covid-19-government-suspends-rail-franchise-agreements

 

Screenshot 2020-03-23 at 11.54.46

 

https://www.independent.co.uk/travel/news-and-advice/coronavirus-uk-trains-rail-network-franchise-system-suspended-a9417476.html 

 

 

 

 

So, during the current crisis, it may, according to at least one report lead to a situation in the months to come where the old style franchising arrangements are no longer going to work.  As the Rail Delivery Group – the application and use of these Emergency Measures Agreements – are still being worked out.  Perhaps unsurprisngly this is likely to be a complex solution to manage, especially with so many different businesses involved.

This particular crisis has and will change the way we operate our society, and our business, and the way we interact with one another.

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