Hitachi Trains For Avanti
The title of this post is the same as that of an article in the January 2020 Edition of Modern Railways.
The Bi-Mode Trains
Some more details of the thirteen bi-mode and ten electric Hitachi AT 300 trains are given.
Engine Size and Batteries
This is an extract from the article.
Hitachi told Modern Railways it was unable to confirm the rating of the diesel engines on the bi-modes, but said these would be replaceable by batteries in future if specified.
I do wonder if my speculation in Will Future Hitachi AT-300 Trains Have MTU Hybrid PowerPacks? is possible.
After all, why do all the hard work to develop a hybrid drive system, when your engine supplier has done it for you?
Would Avanti West Coast need a train that will do 125 mph on diesel?
- The North Wales Coast Line has a maximum line speed of just 90 mph.
- Wikipedia is uncertain of the maximum speed of the Chester and Shrewbury Line, but it is extremely unlikely to be more than 80-90 mph.
The only place, they will be able to run at 125 mph or even higher will be on the West Coast Main Line, where they will be running under electric power from the pantograph.
If I were designing a bi-mode for 90 mph on diesel and 125 mph on electric, I would have batteries on the train for the following purposes.
- Handle regenerative braking.
- Provide hotel power in stations or when stationery.
- Provide an acceleration boost, if required, when running on diesel.
- Provide emergency power, if the wires go down in electric mode.
I’m sure MTU could work out a suitable size of diesel engine and batteries in an MTU PowerPack, that would meet the required performance.
Or maybe a smaller diesel could be used. An LNER Class 800 train has 1680 kW of installed power to maintain 125 mph. But the Great Western Railway versions have 2100 kW or twenty-five percent more, as their routes are more challenging with steeper gradients.
For the less challenging routes at a maximum of 90 mph between Crewe, Chester, Shrewsbury and North Wales, I wonder what level of power is needed.
A very rough estimate based on the speed required could put the power requirement as low as 1200-1500 kW.
As the diesel engines are only electrical generators, it would not effect the ability of the train to do 125 mph between Crewe and London.
There looks to be a virtuous circle at work here.
- Lower maximum speed on diesel means smaller diesel engines.
- Smaller diesel engines means lighter diesel engines and less fuel to carry.
- Less weight to accelerate needs less installed power.
- Less power probably means a more affordable train, that uses less diesel.
It looks to me, that Hitachi have designed a train, that will work Avanti West Coast’s routes efficiently.
The Asymmetric Bi-Mode Train
It looks to me that the bi-mode train that Avanti West Coast are buying has very different performance depending on the power source and signalling
- 90 mph or perhaps up to 100 mph on diesel.
- 125 mph on electric power.with current signalling.
- Up to 140 mph on electric power with in-cab digital signalling.
This compares with the current Class 221 trains, which can do 125 mph on all tracks, with a high enough operating speed.
The new trains’ different performance on diesel and electric power means they could be called asymmetric bi-modes.
Surely, creating an asymmetric bi-mode train, with on-board power; battery, diesel or hydrogen, sized to the route, means less weight, greater efficiency, less cost and in the case of diesel, higher carbon efficiency.
Carbon Emissions
Does the improvement in powertrain efficiency with smaller engines running the train at slower speeds help to explain this statement from the Modern Railways article?
Significant emissions reduction are promised from the elimination of diesel operation on electrified sections as currently seen with the Voyagers, with an expected reduction in CO2 emissions across the franchise of around two-thirds.
That is a large reduction, which is why I feel, that efficiency and batteries must play a part.
Battery-Electric Conversion
In my quote earlier from the Modern Railways article, I said this.
These (the diesel engines) would be replaceable by batteries in future if specified.
In Thoughts On The Next Generation Of Hitachi High Speed Trains, I looked at routes that could be run by a battery-electric version of Hitachi AT-300 trains.
I first estimated how far an AT-300 train could go on batteries.
How far will an AT-300 train go on battery power?
- I don’t think it is unreasonable to be able to have 150 kWh of batteries per car, especially if the train only has one diesel engine, rather than the current three in a five-car train.
- I feel with better aerodynamics and other improvements based on experience with the current trains, that an energy consumption of 2.5 kWh per vehicle mile is possible, as compared to the 3.5 kWh per vehicle mile of the current trains.
Doing the calculation gives a range of sixty miles for an AT-300 train with batteries.
As train efficiency improves and batteries are able to store more energy for a given volume, this range can only get better.
I then said this about routes that will be part of Avanti West Coast’s network.
With a range of sixty miles on batteries, the following is possible.
- Chester, Gobowen, Shrewsbury And Wrexham Central stations could be reached on battery power from the nearest electrification.
- Charging would only be needed at Shrewsbury to ensure a return to Crewe.
Gobowen is probably at the limit of battery range, so was it chosen as a destination for this reason.
The original post was based on trains running faster than the 90 mph that is the maximum possible on the lines without electrification, so my sixty mile battery range could be an underestimate.
These distances should be noted.
- Crewe and Chester – 21 miles
- Chester and Shrewsbury – 42 miles
- Chester and Llandudno – 47 miles
- Chester and Holyhead – 84 miles
Could electrification between Crewe and Chester make it possible for Avanti West Coast’s new trains to go all the way between Chester and Holyhead on battery power in a few years?
I feel that trains with a sixty mile battery range would make operations easier for Avanti West Coast.
Eighty miles would almost get them all the way to Holyhead, where they could recharge!
Rlectrification Between Chester And Crewe
I feel that this twenty-odd miles of electrification could be key to enabling battery-electric trains for the routes to the West of Chester to Shrewsbury, Llandudno and Holyhead.
How difficult would it be to electrify between Chester and Crewe?
- It is not a long distance to electrify.
- There doesn’t appear to be difficult viaducts or cuttings.
- It is electrified at Crewe, so power is not a problem.
- There are no intermediate stations.
But there does seem to be a very large number of bridges. I counted forty-four overbridges and six underbridges. At least some of the bridges are new and appear to have been built with the correct clearance.
Perhaps it would be simpler to develop fast charging for the trains and install it at Chester station.
Conclusion On The Bi-Mode Trains
It appears to me that Avanti West Coast, Hitachi and Rock Rail, who are financing the trains have done a very good job in devising the specification for a fleet of trains that will offer a good service and gradually move towards being able to deliver that service in a carbon-free manner.
- The initial bi-mode trains will give a big improvement in performance and reduction in emission on the current Voyagers, as they will be able to make use of the existing electrification between Crewe and London.
- The trains could be designed for 125 mph on electric power and only 90-100 mph on diesel, as no route requires over 100 mph on diesel. This must save operating costs and reduce carbon emissions.
- They could use MTU Hybrid PowerPacks instead of conventional diesel engines to further reduce emissions and save energy
- It also appears that Hitachi might be able to convert the trains to battery operation in a few years.
- The only new infrastructure would be a few charging stations for the batteries and possible electrification between Chester and Crewe.
I don’t think Avanti West Coast’s ambition of a two-thirds reduction in CO2 is unreasonable and feel it could even be exceeded.
Other Routes For Asymetric Bi-Mode Trains
I like the concept of an asymetric bi-mode train, where the train has the following performance.
- Up to 100 mph on battery, diesel or hydrogen.
- Up to 100 mph on electrified slower-speed lines.
- 125 mph on electrified high-speed lines, with current signalling.
- Up to 140 mph on electrified high-speed lines, with in-cab digital signalling.
I am very sure that Hitachi can now tailor an AT-300 train to a particular company’s needs. Certainly, in the case of Avanti West Coast, this seems to have happened, when Avanti West Coast, Hitachi, Network Rail and Rock Rail had some serious negotiation.
LNER At Leeds
As an example consider the rumoured splitting and joining of trains at Leeds to provide direct services between London and Bradford, Harrogate, Huddersfield, Ilkley, Skipton and other places, that I wrote about in Dancing Azumas At Leeds.
In the related post, I gave some possible destinations.
- Bradford – 13 miles – 25 minutes – Electrified
- Harrogate – 18 miles – 30 minutes
- Huddersfield – 17 miles – 35 minutes
- Hull – 20 miles – 60 minutes
- Ilkley – 16 miles – 26 minutes – Electrified
- Skipton – 26 miles – 43 minutes – Electrified
- York – 25 miles – 30 minutes
Note, that the extended services would have the following characteristics.
They would be run by one five-car train.
- Services to Bradford, Ilkley and Skipton would be electric
- Electrification is planned from Leeds to Huddersfield and York, so these services could be electric in a few years.
- All other services would need independent power; battery, diesel or hydrogen to and from Leeds.
- Two trains would join at Leeds and run fast to London on the electrified line.
- Services would probably have a frequency of six trains per day, which works out at a around a train every two hours and makes London and back very possible in a day.
- They would stop at most intermediate stations to boost services to and from Leeds and give a direct service to and from London.
As there are thirty trains per day between London and Leeds in each direction, there are a lot of possible services that could be provided.
Currently, LNER are only serving Harrogate via Leeds.
- LNER are using either a nine-car train or a pair of five-car trains.
- The trains reverse in Platforms 6 or 8 at Leeds, both of which can handle full-length trains.
- LNER allow for a generous time for the reverse, which would allow the required splitting and joining.
- All trains going to Harrogate are Class 800 bi-mode trains.
Note that the Class 800 trains are capable of 125 mph on diesel, whereas the average speed between Harrogate and Leeds is just 35 mph. Obviously, some of this slow speed is due to the route, but surely a train with a maximum speed of 90-100 mph, with an appropriate total amount of diesel power, would be the following.
- Lighter in weight.
- More efficient.
- Emit less pollution.
- Still capable of high speed on electrified lines.
- Bi-mode and electric versions could run in pairs between Leeds and London.
LNER would probably save on track access charges and diesel fuel.
LNER To Other Places
Could LNER split and join in a similar way to other places?
- Doncaster for Hull and Sheffield
- Edinburgh for Aberdeen and Inverness
- Newark for Lincoln and Nottingham
- York for Middlesbrough and Scarborough.
It should be noted that many of the extended routes are quite short, so I suspect some train diagrams will be arranged, so that trains are only filled up with diesel overnight,
GWR
Great Western Railway are another First Group company and I’m sure some of their routes could benefit, from similar planning to that of Avanti West Coast.
Splitting and joining might take place at Reading, Swindon, Bristol and Swansea.
South Western Railway
South Western Railway will need to replace the three-car Class 159 trains to Exeter, that generally work in pairs with a total number of around 400 seats, in the next few years.
These could be replaced with a fleet of third-rail Hitachi trains of appropriate length.
- Seven cars sating 420 passengers?
- They would remove diesel trains from Waterloo station.
- All South Western Railway Trains running between Waterloo and Basingstoke would be 100 mph trains.
I wonder, if in-cab digital signalling on the route, would increase the capacity? It is sorely needed!
Southeastern
Southeastern need bi-mode trains to run the promised service to Hastings.
- Trains would need a third-rail capability.
- Trains need to be capable of 140 mph for High Speed One.
- Trains need to be able to travel the 25 miles between Ashford International and Ore stations.
- Trains would preferably be battery-electric for working into St. Pancras International station.
Would the trains be made up from six twenty-metre cars, like the Class 395 trains?
The Simple All-Electric Train
The Modern Railways article, also says this about the ten all-electric AT-300 trains for Birmingham, Blackpool and Liverpool services.
The electric trains will be fully reliant on the overhead wire, with no diesel auxiliary engines or batteries.
It strikes me as strange, that Hitachi are throwing out one of their design criteria, which is the ability of the train to rescue itself, when the overhead wires fail.
In Do Class 800/801/802 Trains Use Batteries For Regenerative Braking?, I published this extract from this document on the Hitachi Rail web site.
The system can select the appropriate power source from either the main transformer or the GUs. Also, the size and weight of the system were minimized by designing the power supply converter to be able to work with both power sources. To ensure that the Class 800 and 801 are able to adapt to future changes in operating practices, they both have the same traction system and the rolling stock can be operated as either class by simply adding or removing GUs. On the Class 800, which is intended to run on both electrified and non-electrified track, each traction system has its own GU. On the other hand, the Class 801 is designed only for electrified lines and has one or two GUs depending on the length of the trainset (one GU for trainsets of five to nine cars, two GUs for trainsets of 10 to 12 cars). These GUs supply emergency traction power and auxiliary power in the event of a power outage on the catenary, and as an auxiliary power supply on non-electrified lines where the Class 801 is in service and pulled by a locomotive. This allows the Class 801 to operate on lines it would otherwise not be able to use and provides a backup in the event of a catenary power outage or other problem on the ground systems as well as non-electrified routes in loco-hauled mode.
This is a very comprehensive power system, with a backup in case of power or catenary failure.
So why does it look like Hitachi are throwing that capability out on the trains for Avanti West Coast.
There are several possibilities.
- The reliability of the trains and the overhead wire is such, that the ability of a train to rescue itself is not needed.
- The auxiliary generator has never been used for rescuing the train.
- The West Coast Main Line is well-provided with Thunderbird locomotives for rescuing Pendelinos, as these trains have no auxiliary generator or batteries.
- Removal of the excess weight of the auxiliary engine and batteries, enables the Hitachi AT-300 trains to match the performance of the Pendelinos, when they are using tilt.
Obviously, Hitachi have a lot of train performance statistics, from the what must be around a hundred trains in service.
It looks like Hitachi are creating a lightweight all-electric train, that has the performance or better of a Pendelino, that it achieves without using tilt.
- No tilt means less weight and more interior space.
- No auxiliary generator or batteries means less weight.
- Wikipedia indicates, that Hitachi coaches are around 41 tonnes and Pendelino coaches are perhaps up to ten tonnes heavier.
- Less weight means fast acceleration and deceleration.
- Less weight means less electricity generated under regenerative braking.
- Pendelinos use regenerative braking, through the catenary.
- Will the new Hitachi trains do the same instead of the complex system they now use?
If the train fails and needs to be rescued, it uses the same Thunderbird system, that the Pendelinos use when they fail.
Will The New Hitachi Trains Be Less Costly To Run?
These trains will be lighter in weight than the Pendelinos and will not require the track to allow tilting.
Does this mean, that Avanti West Coast will pay lower track access charges for their new trains?
They should also pay less on a particular trip for the electricity, as the lighter trains will need less electricity to accelerate them to line speed.
Are Avanti West Coast Going To Keep The Fleets Apart?
Under a heading of Only South Of Preston, the Modern Railways article says this.
Unlike the current West Coast fleet, the Hitachi trains will not be able to tilt. Bid Director Caroline Donaldson told Modern Railways this will be compensated for by their improved acceleration and deceleration characteristics and that the operator is also working with Network Rail to look at opportunities to improve the linespeed for non-tilting trains.
The routes on which the Hitachi trains will operate have been chosen with the lack of tilt capability in mind, with this having the greatest impact north of Preston, where only Class 390 Pendelinos, which continue to make use of their tilting capability will be used.
Avanti West Coast have said that the Hitachi trains will run from London to Birmingham, Blackpool and Liverpool.
All of these places are on fully-electrified branches running West from the West Coast Main Line, so it looks like there will be separation.
Will The New Hitachi Trains Be Faster To Birmingham, Blackpool And Liverpool?
Using data from Real Time Trains, I find the following data about the current services.
- Birmingham and Coventry is 19 miles and takes 20 minutes at an average speed of 57 mph
- Blackpool and Preston is 16.5 miles and takes 21 minutes at an average speed of 47 mph
- Liverpool and Runcorn is 3.15 miles and takes 15 minutes at an average speed of 52 mph
All the final legs when approaching the terminus seem to be at similar speeds, so I doubt there are much savings to be made away from the West Coast Main Line.
Most savings will be on the West Coast Main Line, where hopefully modern in-cab digital signalling will allow faster running at up to the design speed of both the Hitachi and Pendelino trains of 140 mph.
As an illustration of what might be possible, London to Liverpool takes two hours and thirteen minutes.
The distance is 203 miles, which means that including stops the average speed is 91.6 mph.
If the average speed could be raised to 100 mph, this would mean a journey time of two hours and two minutes.
As much of the journey between London and Liverpool is spent at 125 mph, which is the limit set by the signalling, raising that to 135 mph could bring substantial benefits.
To achieve the journey in two hours would require an overall average speed of 101.5 mph.
As the proportion of track on which faster speeds, than the current 125 mph increase over the next few years, I can see Hitachi’s lightweight all-electric expresses breaking the two hour barrier between London and Liverpool.
What About The Pendelinos And Digital Signalling?
The January 2020 Edition of Modern Railways also has an article entitled Pendolino Refurb Planned.
These improvements are mentioned.
- Better standard class seats! (Hallelujah!)
- Refreshed First Class.
- Revamped shop.
Nothing is mentioned about any preparation for the installation of the equipment to enable faster running using digital in-cab signalling, when it is installed on the West Coast Main Line.
Surely, the trains will be updated to be ready to use digital signalling, as soon as they can.
Just as the new Hitachi trains will be able to take advantage of the digital signalling, when it is installed, the Pendellinos will be able to as well.
Looking at London and Glasgow, the distance is 400 miles and it takes four hours and thirty minutes.
This is an average speed of 89 mph, which compares well with the 91.6 mph between London and Liverpool.
Raise the average speed to 100 mph with the installation of digital in-cab signalling on the route, that will allow running at over 125 mph for long sections and the journey time will be around four hours.
This is a table of average speeds and journey times.
- 100 mph – four hours
- 105 mph – three hours and forty-eight minutes
- 110 mph – three hours and thirty-eight minutes
- 115 mph – three hours and twenty-eight minutes
- 120 mph – three hours and twenty minutes
- 125 mph – three hours and twelve minutes
- 130 mph – three hours and four minutes
I think that I’m still young enough at 72 to be able to see Pendelinos running regularly between London and Glasgow in three hours twenty minutes.
The paragraph is from the Wikipedia entry for the Advanced Passenger Train.
The APT is acknowledged as a milestone in the development of the current generation of tilting high speed trains. 25 years later on an upgraded infrastructure the Class 390 Pendolinos now match the APT’s scheduled timings. The London to Glasgow route by APT (1980/81 timetable) was 4hrs 10min, the same time as the fastest Pendolino timing (December 2008 timetable). In 2006, on a one off non-stop run for charity, a Pendolino completed the Glasgow to London journey in 3hrs 55min, whereas the APT completed the opposite London to Glasgow journey in 3hrs 52min in 1984.
I think it’s a case of give the Pendelinos the modern digital in-cab signalling they need and let them see what they can do.
It is also possible to give an estimate for a possible time to and from Manchester.
An average speed of 120 mph on the route would deliver a time of under one hour and forty minutes.
Is it possible? I suspect someone is working on it!
Conclusion
I certainly think, that Avanti West Coast, Hitachi and Network Rail, have been seriously thinking how to maximise capacity and speed on the West Coast Main Line.
I also think, that they have an ultimate objective to make Avanti West Coast an operator, that only uses diesel fuel in an emergency.
Hertfordshire County Council’s Aspiration For A Watford Junction And Aylesbury Service
This article on Ian Visits is entitled Watford Junction Station Could Become A “Super-Hub”.
This is the introductory paragraph.
A new Watford Junction to Aylesbury rail service, along with a new link between Stevenage and Luton are two of the proposals being put forward by Hertfordshire Council.
The proposals are contained in this document on the Hertfordshire County Council web site, which is entitled Rail Strategy.
In TfL Seeks New Procurement Plan For Metropolitan Line Extension, I proposed a service run by Chiltern Railways between Watford Junction and Amersham stations.
The rest of this article is a rewrite of part of that linked post, which explores the possibilities of a service between Watford Junction and Aylesbury stations.
This Was My Original Simple Proposal
I think it would be possible to design a simpler link with the following characteristics.
- Watford station would remain open.
- A four trains per hour (tph) link would run all day between Watford Junction and Amersham stations.
- Stops would be at Watford High Street, Vicarage Road, Cassiobridge, Croxley, Rickmansworth, Chorleywood and Chalfont & Latimer.
No-one would get a worse service than currently and the new stations of Cassiobridge and Vicarage Road, would make rail an alternative for many travellers.
The cross-Watford service would give access to these London services.
- Chiltern at all stations between Croxley and Amersham.
- London Midland at Watford Junction.
- Metropolitan Line at Croxley, Rickmansworth and Amersham.
- Virgin Trains at Watford Junction,
- Watford DC Line at Watford High Street and Watford Junction
The Bakerloo Line at Watford Junction and Watford High Street, could possibly be added, if the line is extended. Which I doubt, it will be!
Hertfordshire is proposing the terminal is Aylesbury, which seems to be a good idea. But I’ll examine that later.
The next few sections, will cover various issues with the route.
New Track
There would need to be new track between Croxley and Watford High Street stations.
Will The New Stations Have Two Platforms?
All proposals have shown new stations on the new track at Cassiobridge and Vicarage Road.
I believe that money can be saved by creating two much simpler stations.
- Only one platform, but probably an island platform with two faces like Watford High Street station.
- No expensive footbridge if possible.
- Only one lift.
Cassiobridge would be more complicated because of the viaduct connecting the line towards Croxley station.
This visualisation shows the viaduct and the location of Cassiobridge station.
Cassiobridge station will be behind the trees towards the top-right of the image.
Would The New Track Be Single Or Double-Track?
There is space for double-track and the two ends of the route are already electrified double-track.
But surely the viaduct shown above would be much more affordable, if it were to be built for only one track!
Trains would need to pass at places East of Croxley station, but then if the line was double-track through and to the East of Cassiobridge station, trains could pass with impunity.
Consider.
- The Borders Railway looks to have too much single-track
- The Barking Riverside Extension is being built with a double track.
Too much single-track is often regretted.
Why Four Trains Per Hour?
Four trains per hour (tph) is becoming a standard, as it encourages Turn-Up-And-Go behaviour from travellers.
It also fits well with keeping the four tph Metropolitan Line service to Watford station, as this could give a same platform interchange at Croxley station.
Would The New Track Be Electrified?
The only part of the route that is not electrified is the about three miles of new track between the Watford Branch and the Watford DC Line.
All current electrification is either third-rail or to the London Underground standard. and any future electrification would probably be to the London Underground standard, so that S Stock can work the route.
I believe that the Class 710 trains will have a limited onboard energy storage capability, which could enable the trains to bridge the cap in the electrification between Watford High Street and Croxley stations.
How much would not electrifying the new track save?
How Long Will A Journey Take From Amersham Or Aylesbury To Watford Junction?
Consider.
- Amersham to Croxley takes about 30 minutes, but it does involve a change to a bus.
- The Overground takes three minutes between Watford Junction and Watford High Street stations.
- Chiltern Railways achieve a twelve minute time between Amersham and Rickmansworth.
I suspect that a modern train like one of London Overground’s Class 378 trains could do the journey in a few minutes under half-an-hour.
As Amersham to Aylesbury takes about sixteen minutes, that looks like a trip between Aylesbury and Watford Junction would take about forty-five minutes.
Amersham Or Aylesbury?
My original plan used Amersham, as it has a turnback facility.
But Aylesbury looks to have space as this Google Map shows.
It should also be noted that the forty-five minute journey time between Aylesbury and Watford Junction stations, would give a two hour round trip, with relaxed fifteen minute turnround times.
This would allow time to top-up the batteries.
What Class Of Train Could Be Used?
Four-car Class 378 trains or the new Class 710 trains would be ideal. As the Class 378 train is out of production, it would have to be Class 710 trains or something similar from Bombardier. But other manufacturers might have a suitable train.
Battery power would be required, but that is becoming a standard option on metro trains like these.
How Many Trains Would Be Needed?
If the trains could do an Out-and-Back journey in an hour, then four trains would be needed to provide a four tph service.
A two-hour time would need eight trains.
Will The Link Have Any Other Services?
I have seen to plans to use the line for any other passenger or freight services.
Will There Be Infrastructure Issues At Existing Stations?
As all of the trains, I’ve mentioned and the London Underground S Stock trains, share platforms all over North West London, the answer is probably no, with the exception of a few minor adjustments to signs and platforms.
Croxley Station
Croxley station would be unchanged.
But in addition to the 4 tph between Baker Street and Watford, there would be 4 tph between Watford Junction and Amersham.
Platform 1 would handle.
- Baker Street to Watford
- Amersham to Watford Junction
Platform 2 would handle.
- Watford to Baker Street
- Watford Junction to Amersham
This would mean that if the trains alternated, the maximum wait for a connection would be about 7.5 minutes.
What I feel would be the two most common connections, would just involve a wait on the same platform.
I suspect that those, who timetable trains, would come up with a very passenger-friendly solution.
Watford Station
A property developer once told me, that the most profitable developments, are those where a railway station is involved.
So would the development of the extension involve a rebuild of Watford station to provide the following?
- A modern future-proofed station, with all the capacity that might be needed in the next forty years or so.
- Appropriate housing or commercial development on top of the new station.
- Sensible amounts of parking for travellers.
With four tph to and from London in the basement, it would surely be a profitable development.
Watford Junction Station
Watford Junction station has four bay platforms 1-4, that handle the three tph service on the Watford DC Line.
At stations like Clapham Junction, Crystal Palace, Dalston Junction, Highbury and Islington and New Cross, single platforms handle four tph with ease for London Overground services.
This means that handling four tph to Amersham in addition to current services would not be difficult.
The only work, that I think should be done, is make sure that these platforms are long enough to take two of the future Class 710 trains working as an eight-car train.
There could even be two platforms left for Bakerloo Line services, if it were to be decided, that these services would go to Watford Junction.
Elton John Plays Vicarage Road Stadium
This or some football matches at Vicarage Road Stadium, would be the biggest test of the Link.
Note the following.
- Some stations like Watford High Street can already handle longer trains than the hundred metre long, five-car Class 378 trains they currently do.
- Some stations like Croxley can handle the 133 metre long S Stock trains used on the Metropolitan Line.
So to future-proof the Link for massive one-off events would it be sensible to make the platforms long enough for eight-car trains or two Class 710 trains working as a pair?
Benefits
The benefits of this approach are as follows.
- Watford station keeps its current service to London.
- Watford gets a four tph link across the South of the town, serving the Shopping Centre, the Hospital and the Stadium.
- Amersham or Aylesbury to Croxley stations get a link to the West Coast Main Line.
- It could be built as a single track line without electrification.
- Trains to run the services could be more easily available.
- Simple island platform-based stations could be built at Cassiobridge and Vicarage Road.
In addition, Chiltern Railways, London Midland, London Overground and Underground, all gain a feeder railway bringing travellers to their services to and from London.
Cost Savings
Note.
- Transport for London needs cost savings on this project.
- Redevelopment of Watford station as a station with oversite development could raise a lot of money.
- The Croxley Link could be built as a single-track link without electrification and run initially using battery-electric trains.
I also feel, that building the line this way would deliver it earlier, thus improving cash-flow.
The simple link would need at the minimum.
- A single- or double-track railway without electrification between Croxley and Watford High Street stations.
- Two stations with island platforms at Cassiobridge and Vicarage Road
- A viaduct to connect Cassiobridge station to the Watford Branch.
- Some Class 710 trains or similar.
If skates were worn, the link could probably open in 2025.
Battery Trains To Be Tested In Denmark
The title of this post is the same as that of this article on Railway Gazette.
This is the introductory paragraph.
Suppliers are to be invited to test battery-powered trains on regional lines in late 2020 and early 2021, ahead of a potential order which could see battery trains enter passenger service from 2025.
This order follows on from three confirmed or possible German battery train orders in Schleswig-Holstein, Baden-Württemberg and Chemnitz.
So far interest in battery trains in the UK, has not been so strong, with only orders in Wales.
Thoughts On A Tri-Mode AT-300 Between Waterloo And Exeter
Note that in this post, I’m using the Class 802 train as an example of Hitachi’s AT-300 train.
In writing my post called What Would Be The Range Of A Tri-Mode Class 802 Train?, I realised that an efficient tri-mode train with electric, battery and diesel power could have a range of over a hundred miles.
Suppose a Class 802 train was built with the following characteristics, were designed for service on the West Of England Line.
- Five cars, which would seat around 350 passengers.
- Two diesel engines replaced with batteries of the same seven tonne weight.
- At least 840 kWh or perhaps as much as 1,500 kWh of battery power could easily be installed.
- One 700 kW diesel engine would be retained for electrification failure and to boost battery power.
- All electrical equipment on the train will use the minimum amount of electricity.
- Regenerative braking to batteries.
- Aerodynamics would be improved, as I believe Hitachi are doing.
- I believe that the train could have an energy consumption to maintain 100 mph on the West Of England Line around two kWh per vehicle-mile.
So what would be the range of a five-car train on just 840 kWh of batteries?
- The train would consume 10 kWh per mile.
So this would give a range of 84 miles.
The diesel engine could be key.
- At 100 mph, the train does a mile in thirty-six seconds.
- In this time, the diesel engine can generate up to 7 kWh.
- The train would need just 3 kWh per mile from the batteries to maintain 100 mph.
This would give a range of 280 miles,
This is more than enough for the 125 miles between Basingstoke and Exeter St. Davids stations.
Other people read books in the evening, I do puzzles and mathematical exercises.
In How Much Power Is Needed To Run A Train At 125 mph?, I calculated that a forty-year-old InterCity 125 needs 2.83 kWh per vehicle mile to maintain 125 mph. Surely, modern trains can halve that figure.
Suppose Hitachi, improve the aerodynamics and the energy consumption of the train, such that it is 1.5 kWh per vehicle mile, which is a figure I don’t consider impossible.
This would give a range with 840 kWh batteries of 112 miles.
With selective use of the diesel engine and a charging station at Exeter, this train could easily run between Waterloo and Exeter.
Passenger Capacity
The passenger capacity of the current Class 159 trains is 392 in two three-car trains working as a pair.
A five-car Class 802 train would probably seat 350 passengers in comfort.
Train Length
These are the train lengths.
- A pair of three-car Class 159 trains are 156 metres long.
- A five-car Class 802 train is 130 metres long.
So it would appear, there would be no platform length problems.
Conclusion
A tri-mode Class 802 train or AT-300 would appear to be ideal for Waterloo and Exeter.
Details of the AT-300 trains, that have been ordered by East Midlands Railway and the West Coast Partnership are not very comprehensive, but do say, the following.
- Five-car trains will have four engines instead of three. Would they be smaller, with an added battery? Or will they use MTU Hybrid PowerPacks.
- They will have a new nose. For better aerodynamics?
, But I believe they will make extensive use of battery traction to reduce the use of diesel.
What Would Be The Range Of A Tri-Mode Class 802 Train?
In Could Cirencester Be Reconnected To The Rail Network?, I speculated about the routes of a battery-electric version of a Class 800 train.
I said this.
As Hitachi have stated they will be using battery power to extend ranges of their trains, I wouldn’t be surprised to see some of the current trains modified to have batteries instead of some of their current diesel engines.
Such a train would would be ideal for the following routes.
- Paddington and Bedwyn – 13 miles
- Paddington and Cheltenham – 43 miles
- Paddington and Oxford – 10 miles
- Paddington and Weston-Super-Mare – 19 miles
The distance is the length that is not electrified.
I don’t think it improbable, that London Paddington and Swansea will be achieved by a battery-electric train based on the current Hitachi train designs.
So was it a serious idea or mad speculation?
Under Powertrain in the Wikipedia entry for theClass 800 train, this is said.
Despite being underfloor, the generator units (GU) have diesel engines of V12 formation. The Class 801 has one GU for a 5-9 car set. These provide emergency power for limited traction and auxiliaries if the power supply from the overhead line fails. The class 800/802 electro-diesel or Bi-Mode has 3 GU per five car set and 5 GU per nine car set. A 5 car set has a GU situated under vehicles 2/3/4 respectively and a 9 car set has a GU situated under vehicles 2/3/5/7/8 respectively.
This means that a five-car Class 800 or Class 802 train has three engines and an all -electric Class 801 train has a single engine.
If you were building a tri-mode Class 802 train, could two of the diesel engines be replaced by batteries.
- Hitachi have stated that trains can be changed from one class to another by adding or removing engines.
- Trains would always have at least one diesel engine for emergencies, just as the Class 801 trains do.
- Each MTU 1600 R80L diesel engine weighs just under seven tonnes.
Fourteen tonnes of batteries would probably store about 840 kWh of energy, if the most efficient batteries are used. That would not be a problem if Hitachi came calling.
In How Much Power Is Needed To Run A Train At 125 mph?, I calculated that a five-car Class 801 train needs 3.42 kWh per vehicle mile to cruise on electricity at 125 mph.
Dividing 840 by 5 cars and 3.42 kWh per vehicle file gives a range of forty-nine miles.
- The trains would need regenerative braking to the batteries.
- Battery energy density is increasing.
- Train aerodynamics could be improved, to reduce the power needed.
- Secondary routes like the Golden Valley Line are unlikely to have an operating speed higher than 110 mph, which would reduce the power needed.
I am coming round to the opinion, that Hitachi could design a battery-electric train based on the current Class 80X trains, that could reach Swansea from Paddington, without touching a drop of diesel.
- The batteries would need to be recharged before returning to London.
- I am assuming that the electrification is up and working between Paddington and Cardiff.
- Could the overhead rails in the Severn Tunnel be removed or replaced with engineering plastic or ceramic, as they corrode so much?
- Two five-car trains with batteries could work together as they do now.
Hitachi would need to get the software absolutely right.
Could The Diesel Engine Be Used To Increase Battery Range?
Lets assume that a tri-mode Class 802 train is running on a 125 mph main line.
It enters a section without electrification.
- It is cruising at 125 mph
- The batteries have a capacity of 840 kWh and have been charged on previous electrification.
- The train needs 3.42 kWh per vehicle mile to maintain speed.
- It’s a five-car train so it will need 17.1 kWh per mile.
- The train will take approximately thirty seconds to cover a mile and in that time the diesel engine will produce 5.83 kWh.
- So the net energy use of the train will be 11.27 kWh per mile.
This would give the train a range of 74.5 miles at 125 mph.
Obviously, a good driver, aided by a powerful Driver Assistance System could optimise the use of power to make sure the train arrived on time and possibly minimised carbon emissions.
What Would Be The Ultimate Range?
I think it would be possible to reduce the electricity consumption by means of the following.
- Slower operating speed.
- Better aerodynamics.
- More efficient train systems.
- Improved Driver Assistance Systems.
I think an energy consumption of 2.5 kWh per vehicle-mile could be possible, at perhaps a cruise of 100 mph
I can do the calculation without diesel assistance.
- It’s a five-car train so it will need 12.5 kWh per mile.
This would give the train a range of 67.2 miles at 100 mph on batteries alone.
I can also do the calculation again with diesel assistance.
- It’s a five-car train so it will need 12.5 kWh per mile.
- The train will take thirty-six seconds to cover a mile and in that time the diesel engine will produce 7 kWh.
- So the net energy use of the train will be 5.5 kWh per mile.
This would give the train a range of 153 miles at 100 mph on batteries with diesel assistance.
How Many Places Could Be Reached With A Fifty-Mile Range?
Setting a limit of fitly miles would allow running these routes on partial battery power, split down by companies who run the Hitachi trains.
Great Western Railway
These routes could certainly be run using a tri-mode Class 802 train.
- Paddington and Bedwyn – 13 miles
- Paddington and Cheltenham – 43 miles
- Paddington and Oxford – 10 miles
- Paddington and Swansea – 46 miles
- Paddington and Weston-Super-Mare – 19 miles
- Swindon and Bristol via Bath – 39 miles
Note.
- The distance gives the length of the longest section of the route without electrification.
- Certain routes like Bedwyn, Oxford and Weston-super-Mare probably wouldn’t need a charging station at the final destination.
- GWR could probably run a few other routes, without adding substantial new infrastructure.
- Tri-mode Class 802 trains, might be able to avoid electrification through Bath.
But surely the the biggest gain is that they would reduce GWR’s carbon footprint.
Hull Trains
I very much feel that with a charging station at Hull station, a tri-mode Class 802 train could bridge the forty-four mile gap between Beverley and the electrified East Coast Main Line at Temple Hirst Junction.
- The train could top up the battery every time it stops in Hull station.
- The 700 kW diesel engine could add 700 kWh in the hour long trip with no wires.
If a tri-mode Class 802 train could bridge this gap, then Hull Trains could go zero carbon.
LNER
These routes could certainly be run using a tri-mode Class 802 train.
- Kings Cross and Bradford – 14 miles
- Kings Cross and Harrogate – 18 miles
- Kings Cross and Huddersfield – 17 miles
- Kings Cross and Hull – 36 miles
- Kings Cross and Lincoln – 16 miles
- Kings Cross and Middlesbrough – 21 miles
Note.
- The distance gives the length of the longest section of the route without electrification.
- Certain routes like Bradford, Harrogate, Huddersfield, Lincoln and Middlesbrough probably wouldn’t need a charging station at the final destination.
- LNER could probably run a few other routes, without adding substantial new infrastructure.
- Using both battery and diesel power, the train would be able to make Cleethorpes and Grimsby after Lincoln.
But surely the the biggest gain is that they would reduce LNER’s carbon footprint.
TransPennine Express
These routes could certainly be run using a tri-mode Class 802 train.
- Leeds and Huddersfield – 17 miles
- Liverpool and Edinburgh – 34 miles
- Liverpool and Hull – 34 miles
- Liverpool and Scarborough – 34 miles
- Manchester Airport and Middlesbrough – 34 miles
- Manchester Airport and Newcastle- 34 miles
Note.
- The distance gives the length of the longest section of the route without electrification.
- TransPennine Express services all suffer because of the long gap across the Pennines.
- Network Rail are planning to partly electrify Dewsbury and Huddersfield, which would reduce the major gap to just eighteen miles.
As with GWR, Hull Trains and LNER, the carbon footprint would be reduced.
Conclusion
A tri-mode Class 802 train would be a good idea.
It should be noted that GWR, Hull Trains and TransPennine Express are all First Group companies.
Boris Johnson Vows New Life For High Streets And Axed Rail Lines
The title of this post is the same as that of this article in The Times.
This is the introductory paragraph.
Boris Johnson is promising to revitalise “left behind” high streets through tax cuts for pubs and shops and reversing some of the Beeching rail cuts to branch lines.
The article gives a map of the lines and here is a list of them.
- Newcastle and Ashington/Blyth.
- Bristol and Portishead
- Camp Hill Line
- Willenhall and Darlaston
- Thornton-Cleveleys and Fleetwood
- Okehampton and Exeter
- March and Wisbech
- Uckfield and Lewes
- A new station he building of a station at Skelmersdale.
I will suggest other possibilities and add them here.
- West Hampstead and Hounslow – Part of the West London Orbital Railway
- Brent Cross and Kew – Part of the West London Orbital Railway
- Cirencester – See Could Cirencester Be Reconnected To The Rail Network?
There could be several!
The Technology Is With Us!
Anyone who follows railway technology, as I do, knows that technology coming on stream will ease the creation of these routes.
- Modern digital in-cab signalling, as already used on Thameslink.
- Battery-electric trains.
- Innovative charging for battery-electric trains.
- Hydrogen-powered trains.
- Tram-trains
- Automatic train control
- Remote services in simple depots.
- Better bridge-raising and other construction techniques.
Many of these new routes will be able to use a standard train.
Fuel Cell Train To Be Tested In The Netherlands
The title of this post, is the same as that of this article on Railway Gazette.
This is the introductory paragraph.
A Coradia iLint hydrogen fuel-cell multiple-unit is to be tested on the Groningen – Leeuwarden line after an agreement was signed at the Klimaattop Noord NL climate summit by manufacturer Alstom, the province of Groningen, local operator Arriva, infrastructure manager ProRail and energy company Engie.
You can get a flavour of some of the Dutch railways in the area from The Train Station At The Northern End Of The Netherlands.
Hydrogen powered trains are also part of the future plans for the use of hydrogen, which I wrote about in The Dutch Plan For Hydrogen.
The Railway Gazette article gives more details on how they will be introducing low carbon trains in the network around Groningen and the wider Netherlands.
These general points are made.
- The Netherlands has nearly a thousand kilometres of lines without electrification.
- Alstom has forty-one orders for their hydrogen-powered Coradia iLints.
They will also be refurbishing the 51 Stadler GTW trains in the area.
The main improvement, is that they will be fitted with batteries to handle regenerative braking and cut their carbon footprint.
The Railway Gazette article also says this.
A further 18 new Stadler Wink trainsets have been ordered which will be able use overhead electrification or hydrotreated vegetable oil fuel, with batteries for regenerated braking energy. These will be designed so that their engines can be replaced with larger batteries when the planned 1·5 kV DC discontinuous electrification of the routes is completed.
The Stadler Wink appears to be the another train from the Flirt family, which is the successor to the GTW.
The Dutch seem to be moving very firmly towards a zero-carbon railway in the North.
Collateral Benefits For The UK
What areas of the UK would be ideal places to adopt a similar philosophy to that which the Dutch are using in the North of the Netherlands?
I think they will be areas, where there are lots of zero carbon electricity, railways without electrification and terrain that’s not to challenging.
These areas come to mind.
- East Anglia
- Lincolnshire
- East Yorkshire
- Far North and North East Scotland.
Note.
-
- The only electrification in these areas is the main lines to Norwich and Cambridge in East Anglia.
- All areas have Gigawatts of offshore wind farms either operating or under development.
- Vivarail are proposing to run battery-electric trains between Wick and Turso, as I wrote about in Is This The Most Unusual Idea For A New Railway Service in The UK?
- With the exception of East Yorkshire, the train operating company is Abellio, who are Dutch railways, by another name.
- East Anglia is already using Stadler Flirt Class 755 trains, that can be fitted with batteries.
I also believe that Hitachi will soon be providing battery-electric versions of their AT300 trains. I wrote about this in Thoughts On The Next Generation Of Hitachi High Speed Trains.
Battery electric AT300 trains could provide long distance services to the areas I listed.
Conclusion
What is happening in the North of the Netherlands, will be watched with interest in the UK.
‘Earthquake Mode’ Battery Packs To Be Fitted To N700S Shinkansen Fleet
The title of this post is the same as that of this article on the Railway Gazette.
The Japanese are fitting batteries into the latest N700S Shinkansen trains.
- Eight of the sixteen cars will be fitted with batteries.
- It is quoted that they may be for rescue modes at low speed.
- The batteries seem to be a proven component from Toshiba.
I would be very surprised if they didn’t handle the regenerative braking.
I feel in a few years time, no manufacturer will build a train without batteries, as it will save energy and provide a rescue mode.
Shapps Wants ‘Earlier Extinction Of Diesel Trains’
The title of this post, is the same as that of this article on the East London and West Essex Guardian.
This is the first two paragraphs of the article.
The phasing out of diesel trains from Britain’s railways could be intensified as part of the Government’s bid to cut carbon emissions.
Transport Secretary Grant Shapps told MPs he is “hugely concerned” that the current policy means diesel trains will continue to operate until 2040.
In some ways the positioning of the article in a newspaper serving East London and West Essex is a bit strange.
- The only diesel trains in the area are freight trains, after the electrification of the Gospel Oak and Barking Line.
- Grant Schapps constituency is Welwyn and Hatfield, which is twenty or so miles North of London.
It looks to me to be a syndicated story picked up by the paper.
But as it reports what he said to the Transport Select Committee, there is a strong chance that it is not fake news.
How Feasible Would It Be To Bring Forward The 2040 Diesel Extinction Date?
Government policy of an extinction date of 2040 was first mentioned by Jo Johnson, when he was Rail Minister in February 2018.
This article on Politics Home is entitled Rail Minister Announces Diesel Trains To Be Phased Out By 2040, gives more details about what Jo said.
Since then several developments have happened in the intervening nearly two years.
Scores Of Class 800 Trains Are In Service
Class 800 trains and their similar siblings can honestly be said to have arrived.
Currently, there appear to be over two hundred of these trains either delivered or on order.
Many have replaced diesel trains on Great Western Railway and LNER and stations like Kings Cross, Paddington and Reading are becoming over ninety percent diesel-free.
It should be noted that over half of these trains have diesel engines, so they can run on lines without electrification.
But the diesel engines are designed to be removed, to convert the trains into pure electric trains, when more electrification is installed.
Midland Main Line Upgrade
This line will be the next to be treated to the Hitachi effect, with thirsty-three of the second generation of Hitachi’s 125 mph trains.
- The Hitachi trains will use electrification South of Melton Mowbray and diesel power to the North.
- The trains will have a redesigned nose and I am sure, this is to make the trains more aerodynamically efficient.
- The introduction of the trains will mean, that, all passenger trains on the Midland Main Line will be electric South of Melton Mowbray.
- St. Pancras will become a diesel-free station.
Whether High Speed Two is built as planned or in a reduced form, I can see electrification creeping up the Midland Main Line to Derby, Nottingham and Sheffield and eventually on to Leeds.
Other Main Line Routes
The Midland Main Line will have joined a group of routes, that are run partly by diesel and partly by electricity.
- London and Aberdeen
- London and Bradford
- London and Cheltenham
- London and Harrogate
- London and Hull
- London and Inverness
- London and Lincoln
- London and Middlesbrough
- London and Penzance via Exeter and Plymouth.
- London and Sunderland
- London and Swansea
- London and Worcester and Hereford
Once the Midland Main Line is upgraded, these main routes will only be these routes that use pure diesel for passenger routes.
- TransPennine Routes
- Chiltern Route
- London and Exeter via Basingstoke
- London and Holyhead
Plans already exist from West Coast Rail to use bi-mode on the Holyhead route and the Basingstoke route could also be a bi-mode route.
TransPennine and Chiltern will need bespoke solutions.
Some Electrification Has Happened
Electrification has continued at a slow pace and these schemes have been completed or progressed.
- Chase Line
- Between Birmingham and Bromsgrove
- North West England
- Between Edinbugh, Glasgow, Alloa, Dunblane and Stirling.
- Gospel Oak to Barking Line
- Between St. Pancras and Corby.
- Crossrail
In addition London and Cardiff will soon be electrified and a lot of electrification designed by the Treasury in the past fifty years has been updated to a modern standard.
Battery Trains Have Been Developed And Orders Have Been Received Or Promised
Stadler bi-mode Class 755 trains have been delivered to Greater Anglia and these will be delivered as electric-diesel-battery trains to South Wales.
Stadler also have orders for battery-electric trains for Germany, which are a version of the Flirt called an Akku.
In the Wikipedia entry for the Stadler Flirt, this is a paragraph.
In July 2019, Schleswig-Holstein rail authority NAH.SH awarded Stadler a €600m order for 55 battery-powered Flirt Akku multiple unit trains along with maintenance for 30 years. The trains will start entering service in 2022 and replace DMUs on non-electrified routes.
55 trains at €600 million is not a small order.
Alstom, Bombardier, CAF, Hitacxhi and Siemens all seem to be involved in the development of battery-electric trains.
I think, if a train operator wanted to buy a fleet of battery trains for delivery in 2023, they wouldn’t have too much difficulty finding a manmufacturer.
Quite A Few Recently-Built Electric Trains Are Being Replaced And Could Be Converted To Battery-Electric Trains
In 2015 Bombardier converted a Class 379 train, into a battery-electric demonstrator.
The project showed a lot more than battery-electric trains were possible.
- Range could be up to fifty miles.
- The trains could be reliable.
- Passengers liked the concept.
Judging by the elapsed time, that Bombardier spent on the demonstrator, I would be very surprised to be told that adding batteries to a reasonably modern electric train, is the most difficult of projects.
The Class 379 trains are being replaced by by brand-new Class 745 trains and at the time of writing, no-one wants the currents fleet of thirty trains, that were only built in 2010-2011.
In addition to the Class 379 trains, the following electric trains are being replaced and could be suitable for conversion to battery-electric trains.
- Thirty Class 707 trains from South Western Railway.
- Thirty-seven Class 350/2 trains from West Miidlands Railway.
- Perhaps twenty Class 387 trains from various sources.
There also may be other trains frm Heathrow Express and Heathrow Connect.
All of these trains are too good for the scrapyard and the leasing companies that own them, will want to find profitable uses for them.
Porterbrook are already looking at converting some Class 350 trains to Battery-electric operation.
Vivarail And Others Are Developing Fast Charging Systems For Trains
Battery trains are not much use, unless they can be reliably charged in a short time.
Vivarail and others are developing various systems to charge trains.
Hydrogen-Powered Trains Have Entered Service In Germany
Hydrogen-powered Alstom Coradia Lint trains are now operating in Germany.
Alstom are developing a Class 321 train powered by hydrogen for the UK.
Stadler’s Bi-Mode Class 755 Train
The Class 755 train is the other successful bi-mode train in service on UK railways.
I would be very surprised if Grant Schapps hasn’t had good reports about these trains.
They may be diesel-electric trains, but Stadler have made no secret of the fact that these trains can be battery electric.
Like the Class 800 train, the Class 755 train must now be an off-the-shelf solution to use on UK railways to avoid the need for full electrification.
Class 93 Locomotives
Stadler’s new Class 93 locomotive is a tri-mode locomotive, that is capable of running on electric, diesel or battery power.
This locomotive could be the best option for hauling freight, with a lighter carbon footprint.
As an example of the usability of this locomotive, London Gateway has around fifty freights trains per day, that use the port.
- That is an average of two tph in and two tph out all day.
- All trains thread their way through London using either the North London or Gospel Oak to Barking Lines.
- Most trains run run substantially on electrified tracks.
- All services seem to go to freight terminals.
With perhaps a few of miles of electrification, at some freight terminals could most, if not all services to and from London Gateway be handled by Class 93 locomotives or similar? Diesel and/or battery power would only be used to move the train into, out of and around the freight terminals.
And then there’s Felixstowe!
How much electrification would be needed on the Felixstowe Branch to enable a Class 93 locomotive to take trains into and out of Felixstowe Port?
I have a feeling that we’ll be seeing a lot of these tri-mode freight locomotives.
Heavy Freight Locomotives
One of the major uses of diesel heavy freight locomotives,, like Class 59 and Class 70 locomotives is to move cargoes like coal, biomass, stone and aggregate. Coal traffic is declining, but the others are increasing.
Other countries also use these heavy freight locomotives and like the UK, would like to see a zero-carbon replacement.
I also believe that the current diesel locomotives will become targets of politicians and environmentalists, which will increase the need for a replacement.
There could be a sizeable world-wide market, if say a company could develop a powerful low-carbon locomotive.
A Class 93 locomotive has the following power outputs.
- 1,300 kW on hybrid power
- 4,055 kW on electric
It also has a very useful operating speed on 110 mph on electric power.
Compare these figures with the power output of a Class 70 locomotive at 2,750 kW on diesel.
I wonder if Stadler have ideas for a locomotive design, that can give 4,000 kW on electric and 3,000 kW on diesel/battery hybrid power.
A few thoughts.
- It might be a two-section locomotive.
- Features and components could be borrowed from UKLight locomotives.
- It would have a similar axle loading to the current UKLight locomotives.
- There are 54 UKLight locomotives in service or on order for the UK.
- Stadler will have details of all routes run by Class 59, Class 66 and Class 70 locomotives, in the UK.
- Stadler will have the experience of certifying locomotives for the UK.
Stadler also have a reputation for innovation and being a bit different.
Conclusion
All pf the developments I have listed mean that a large selection of efficient zero carbon passenger trains are easier to procure,than they were when Jo Johnson set 2040 as the diesel extinction date.
The one area, where zero carbon operation is difficult is the heavy freight sector.
For freight to be zero-carbon, we probably need a lot more electrification and more electric locomotives.
What Will Happen To Great Western Railway’s Class 387 Trains?
I have been looking at the services that Great Western Railway run using Class 387 trains.
Current services run by these trains are.
London Paddington And Didcot Parkway
This service has the following characteristics.
- The frequency is two trains per hour (tph)
- Services are run by two trains working as a pair.
- Intermediate stops are Ealing Broadway, Southall, Hayes and Harlington, West Drayton, Iver, Langley, Slough, Maidenhead, Twyford, Reading, Tilehurst, Pangbourne, Goring and Streatley and Cholsey.
- Journey time is one hour twenty-three minutes, giving a three hour round trip.
I estimate that twelve trains are needed to run this service.
From the 15th December 2019, this service appears to run to a similar timetable.
London Paddington And Reading
This service has the following characteristics.
- The frequency is two tph.
- Services are run by two trains working as a pair.
- Intermediate stops are Ealing Broadway, Southall, Hayes and Harlington, West Drayton, Slough, Burnham, Maidenhead and Twyford
- Journey time is fifty-seven minutes, giving a two and a half hour round trip.
I estimate that ten trains are needed to run this service.
From the 15th December 2019, this service will be run by TfL Rail using Class 345 trains.
Reading And Newbury
This service has the following characteristics.
- The frequency is one tph.
- Services are run by two trains working as a pair.
- Intermediate stops are Reading West, Theale, Aldermaston, Midgham, Thatcham and Newbury Racecourse.
- Journey time is twenty-nine minutes, giving an hour round trip.
I estimate that two trains are needed to run this service.
From the 15th December 2019, this service appears to run to a similar timetable.
Current Trains Needed
Summarising the trains needed gives the following.
- London Paddington and Didcot Parkway – twelve trains
- London Paddington and Reading – ten trains
- Reading and Newbury – two trains.
This gives a total of twenty-four trains.
Trains Needed After 15th December 2019
Summarising the trains needed gives the following.
- London Paddington and Didcot Parkway – twelve trains
- London Paddington and Reading – no trains
- Reading and Newbury – two trains.
This gives a total of fourteen trains.
Heathrow Express
Heathrow Express will use twelve Class 387 trains in the near future.
Great Western Railway’s Future Need For Class 387 Trains
Summarising the trains needed gives the following.
- London Paddington and Didcot Parkway – twelve trains
- Reading and Newbury – two trains.
- Heathrow Express – twelve trains.
This gives a total of twenty-six trains.
Great Western Railway have a total of forty-five Class 387 trains. Wikipedia is a bit confusing on this point, but I’m fairly certain this is a correct figure.
This means that Great Western Railway have nineteen trains available for expansion of services.
Great Western Railway’s Class 769 Trains
Great Western Railway have also ordered nineteen dual-voltage bi-mode Class 769 trains.
These are for the following routes.
- Reading – Redhill or Gatwick Airport
- London Paddington – Reading and Oxford
As the spare number of Class 387 trains is the same as that of the bi-mode trains, was it originally intended, that these routes could be run by the Class 387 trains, after Network Rail had joined the electrification together.
But the extra electrification never happened.
So Great Western Railway ordered the bi-modes trains.
Great Western Railway’s Dilemma
The Class 769 trains appear to be running late, so Great Western Railway are running the Gatwick and Oxford services with diesel multiple units, that they’d like to send to the West Country.
Bombardier appear to have moved on with their battery technology, that was successfully trialled using a similar Class 379 train in 2015. I wrote about the possibility of battery Electrostars on the Uckfield Branch last month in Battery Electrostars And The Uckfield Branch.
I believe that both routes would be within range of a battery-electric Class 387 train.
Reading – Redhill or Gatwick Airport
The various sections of the route are as follows.
Reading and Wokingham – Electrified with 750 VDC third-rail.
Wokingham and Aldershot South Junction – Not electrified – 12 miles
Aldershot South Junction and Shalford Junction – Electrified with 750 VDC third-rail.
Shalford Junction and Reigate – Not electrified – 17 miles
Reigate and Redhill/Gatwick – Electrified with 750 VDC third-rail.
To my mind, this is a classic route for a battery-electric train, as it is mainly electrified and both gaps are less than twenty miles long.
Some or all of the Class 387 trains are dual-voltage.
London Paddington – Reading and Oxford
The distance between Didcot Parkway and Oxford is under twelve miles, so a return trip should be well within range of a battery-electric Class 387 train.
There are also plans at Oxford station to put a new bay platform on the London-bould side of the station. This could be fitted with a charging station to avoid any range anxiety.
A Gatwick And Oxford Service
Could the Oxford and Gatwick services be joined together to make a direct Oxford and Gatwick service via Reading?
- I estimate that the service would take around two hours.
- Assuming a fifteen minute turnround at both ends, a round trip would be four and a half hours.
Running a half-hourly service would need just nine trains.
Or eighteen, if they were to run as eight-car trains!
Could this explain the order for nineteen trains, as it’s always a good idea to have a spare?
Conclusion
Great Western Railway can dig themselves elegantly out of a hole of Network Rail’s making by converting the spare Class 387 trains to battery-electric trains.
I’m sure Bombardier have the design available and would be happy to oblige after they have finished conversion of the Heathrow Express units.
There might also be an argument for fitting all Class 387 trains with batteries.
- A more unified fleet.
- Train recovery in the event of electrification failure.
- Better safety in depots.
- Direct services between Paddington and Henley and Bourne End.
- Would it allow Class 387 trains to run between Paddington and Bedwyn?
- Reduced electricity consumption.
It’ll be a decision for the accountants.
One collateral benefit of a successful conversion program for the Great Western Railway, is that it would enable Great Northern’s twenty-eight trains and c2c’s six trains to be easily converted to battery-electric versions.
- Great Northern’s coulde be used by sister company; Southern on the Uckfield Branch and the Marshlink Line.
- c2c trains are soon to be replaced by new trains.
I’m sure that quality four-car battery-electric trains won’t wait long for an operator.
The Anonymous Widower 