The Anonymous Widower

I Don’t Think Bombardier And Transport for London Will Be Disappointed

I’ve just been through this week’s performance of the service on the Gospel Oak to Barking Line, using the Real Time Trains web site.

  • This week was the first with a full four trains per hour service with four-car trains.
  • There were a couple of cancellations on Monday and Tuesday.
  • On Monday, a station guy, said there were problems earlier, but I found the service, as it should be.
  • On one day this week BBC London said there was a shortage of drivers around 07:30, but two bulletins later, they stated service was normal.

Not bad for the first week of a full service!

Train Testing And Driver Training?

It should also be noted that most nights, there are a few movements out of Willesden TMD. Are these test runs and/or driver training?

Ridership

I haven’t ridden the trains this week in the Peak, but in the Off Peak, the number of passengers does appear to be down on a few weeks ago.

It could of course be the increase in frequency!

Next week, I’ll have a ride in the Peak!

Conclusion

I suspect that Bombardier and Transport for London are not disappointed.

June 28, 2019 Posted by | Transport | , , , , | 3 Comments

Barking Riverside Extension – 24th June 2019

I took these pictures, where the arking Riverside Extension will turn off to the East of Renwick Road bridge.

It looks like the piles are going in and there is a lot of catenary renewal.

I think that this project could be on time.

June 25, 2019 Posted by | Transport | , | Leave a comment

Three-Year Nightmare Is Over! Full Service Resumes On Gospel Oak To Barking Overground Line

The title of this post is the same as that of this article on the Barking and Dagenham Post.

There is little more to say!

I went to Barking today and every time, I used a train, the displays were showing the next train was fifteen minutes behind.

I also rode both types of trains, so the Class 378 trains are still being used.

June 24, 2019 Posted by | Transport | , , , , | 2 Comments

A Tale Of Two Trains

This morning, I rode between Essex Toad and Moorgate stations in a very graffitied Class 313 trains. Apparently, there are only a few of the new Class 717 trains in service.

It also appears that there are only two new Class 710 trains running on the Gospel Oak To Barking Line.

Surely, now software and signalling issues have been sorted on these trains, a few more should have entered service.

Or is it problems of mileage accumulation or a lack of trained drivers?

June 17, 2019 Posted by | Transport | , , , , | 4 Comments

What Is The Kinetic Energy Of A Class 710 Train?

I finally got a good look at a Class 710 train at Gospel Oak station this morning.

The picture shows the plate on the end of a DMS car.

  • The weight of the train is 157.8 tonnes. Note that the four-car Class 378 trains weigh 172.1 tonnes.
  • 700 passengers at 90 Kg each with baggage, bikes and buggies would be 63 tonnes.
  • That would be a total weight of 220.8 tonnes.
  • The operating speed is shown as 75 mph., which is the same as the Class 315 train, that many Class 710 trains will replace.

Using the Omni Kinetic Energy Calculator gives a kinetic energy of 34.5 kWh.

For completeness these are the figures for different speeds.

  • 90 mph – 49.4 kWh – Operating speed of a Crossrail Class 345 train.
  • 100 mph – 61.3 kWh – Operating speed of many electric multiple units.

Note that the amount of energy is proportional to the square of the speed.

What Do The  Kinetic Energy Figures Show?

These are a few of my thoughts.

What Is Regenerative Braking?

A full Class 710 is travelling along at 75 mph, ihas 34.5 kWh of kinetic energy. Whenit needs to stop at a station, this energy has to be dissipated.

With normal friction brakes, the energy will be converted into heat and wasted.

But with regenerative braking, the traction motors are used in reverse to generate electricity.

This electricity is generally handled in one of three ways.

  • It is passed through resistors on the roof of the train and turned into heat and wasted.
  • It is fed back into the electrification and used by nearby trains. This needs special transformers feeding the electrification.
  • It is stored in a battery or other energy storage device on the train.

The last method is the most efficient, as the stored energy can be used to help restart the train and regain line speed.

Can The Lea Valley Lines Electrification Handle Regenerative Braking?

This question must be asked, as if the lines can’t then running trains with batteries could be the best way to handle regenerative braking and improve efficiency and reduce the electricity bill.

It should be noted, that the Chingford and Enfield Town routes are not shared with any other trains, so running Class 710 trains on these routes may have advatages in the maintenance of the electrification, if the trains handle the regenerative braking.

On the Cheshunt route, there are also some Greater Anglia services, but these will generally be run by Class 720 trains, which are also Aventras.

On the other hand, the electrification on the Gospel Oak to Barking Line has probably been installed to handle the reverse currents.

Do Class 710 Trains Have Regenerative Braking?

Search the Internet for “Class 710 train regenerative braking” and you find little in addition to my ramblings.

But other Aventras, like Crossrail’s Class 345 trains have been stated to have regenerative braking.

I also repeated my views in an article in Rail Magazine, which I described in I’ve Been Published In Rail Magazine.

No-one has told me that they disagree with my views and I was talking rubbish!

So I will assume that Class 710 trains do have regenerative braking!

The Aventra’s Electrical Systems

In this article in Global Rail News from 2011, which is entitled Bombardier’s AVENTRA – A new era in train performance, gives some details of the Aventra’s electrical systems. This is said.

AVENTRA can run on both 25kV AC and 750V DC power – the high-efficiency transformers being another area where a heavier component was chosen because, in the long term, it’s cheaper to run. Pairs of cars will run off a common power bus with a converter on one car powering both. The other car can be fitted with power storage devices such as super-capacitors or Lithium-ion batteries if required.

This was published eight years ago, so I suspect Bombardier have refined the concept.

But even in 2011, Bombardier were thinking about energy storage on the train.

How Much Storage Would A Class 710 Train Need?

As I said earlier, I train would need sufficient energy storage to store the kinetic energy of a train.

As my calculations show that a full train travelling at the maximum speed of 75 mph, then the energy storage for this version of a Class 710 train must be able to store at least 34.5 kWh, at all times.

The size of the on board energy storage could be around 40-50 kWh, which is readily available in a lithium ion battery, that has been designed for transport use.

Where Would The Energy Storage Be Placed?

The extract above says that two cars hold the electrical systems.

These pictures show the pantograph car and driver car next to it.

Note that underneath the pantograph car is a transformer.

So are these, the pair of cars, the extract describes? They certainly could be!

This is a selection of pictures of the underneath of the driver car.

Note.

  1. There are two large boxes with latches under both driver cars.
  2. Next to these boxes is a smaller box. At the pantograph end of the train, it is open and looks like a cooling system for the two boxes
  3. At the other end of the train, the smaller box appears to have a blanking plate, so perhaps the boxes are empty.

The only sensible use I can think of for the boxesis to store the batteries or capacitors.

I

I would estimate that each of the four large boxes.

  • Is about a metre wide.
  • Is about 0.3 metres high.
  • Is sized to fit within the 2.7 metre width of the train. Perhaps 2.5 metres.

These give a column of 0.75 cubic metres.

Bombardier used to manufacture a Primove 50 kWh battery, which was built to power trams and trains, that had the following characteristics.

  • A weight of under a tonne.
  • Dimensions of under two x one x half metres.

Were these boxes under the floor of the driver cabs of the Class 710 train designed to hold a Primove 50 kWh or similar battery?

Four batteries could give the train as much as 200 kWh of energy storage.

But surely for trundling along the Gospel Oak to Barking Line. a smaller battery capacity would be sufficient. I suspect that you fill the boxes with how many batteries you need and the computer does the rest.

Perhaps, just one 50 kWh battery would be enough! This could explain, why the cooling system appears to be blanked off at one end of the train.

Could The Batteries Be Used To Power The Class 710 Train?

In an article in the October 2017 Edition of Modern Railways, which is entitled Celling England By The Pound, Ian Walmsley says this in relation to trains running on the Uckfield Branch, which is not very challenging.

A modern EMU needs between 3 and 5 kWh per vehicle mile for this sort of service.

So a 50 kWh bsttery would give the following ranges with these consumption rates for a four-car Class 710 trains.

  • 3 kWh – 4.2 miles
  • 4 kWh – 3.1 miles
  • 5 kWh – 2.5 miles

It looks to me, that battery power would be possible over the extension to Barking Riverside station, which is about a mile long.

Battery power would also other uses.

  • Moving the train to a safe place for passenger evacuation, when the overhead electrification fails.
  • Moving the train in a depot or sidings, without overhead power.
  • Running innovative on-board services for maintenance and train preparation, when the train is parked overnight.

Reliable battery power has a lot of uses on a train.

West London Orbital Railway

The West London Orbital Railway would have less than ten miles of lines without electrification, with several electrified miles on either side.

I believe that Class 710 trains with the right amount of batteries could bridge the gap and make a massive difference to rail transport in North and West London.

I think that jumping a gap of a few miles on battery power, may well be easier than doing an Out-and-Back service..

A Flexible System

As it appears, each Class 710 train has got four battery boxes, I suspect that batteries can be installed as to the needs of the route.

  • Standard operation on Gospel Oak to Barking, Watford DC Lines and Lea Valley Lines could be one or two batteries to handle regenerative braking.
  • Out-and-Back to Barking Riverside station ,might need two batteries.
  • West London Orbital services might need three or four batteries.

These battery boxes also could be designed to allow an easy and quick change of battery, as batteries on buses have given Transport for London trouble in the past.

Conclusion

Bombardier’s design of the Aventra has been designed with battery operation in mind, which opens up lots of possibilities!

May 25, 2019 Posted by | Transport | , , , , | 3 Comments

And Then There Were Three!

This morning, I went to Gospel Oak station to look at what was running on the Gospel Oak to Barking Line.

I’d just watched two Class 710 and two Class 378 trains run the 10:10, 10:35, 10:50 and 11:05 trains to Barking, when another Class 710 train come through, by-passing Platform 3 and going straight on towards Barking.

So that must mean there’s at least a third Class 710 train, either being tested, training drivers or accumulating mileage.

Checking on Real Time Trains, it appears that the train passed Gospel Oak station at 11:11 and then ran all the way to Barking station, where it arrived at 11:53, which would have been the time that the missing 11:20 train would have arrived in Barking.

I can’t find any trains disappearing, but it looks like a train joined the service in the missing 11:20 slot and another train disappears back to Willesden Depot, thus creating a slot for another train.

The outcome is the following.

  • Passengers seem to be getting at least three trains in every hour in each direction.
  • London Overground have at least two and possibly three Class 710 trains running between Gospel Oak and Barking.

Baldrick would be proud!

May 25, 2019 Posted by | Transport | , | Leave a comment

And Finally!

They have been a long time coming, but today two Class 710 trains, started running on the Gospel Oak to Barking Line.

I took these pictures.

They certainly stand out with their large orange noses.

A few thoughts on various topics.

Doors And Controls

The doors are all double and wide as they should be for easy entry.

There are also full door controls on each side of the door and a door opening button in the door itself.

So on a crowded train, there won’t be the problem, you get on some trains, that the buttons are blocked by a large person standing in the way.

Information Displays

They are clear and very much follow the style of the displays on the Crossrail trains.

Although, they do have a clock, that seemed to be liked by other passengers and myself.

I also suspect the displays can be used advertising.

Noise

Like the Class 345 trains, they are quiet inside.

Seats

The longitudinal seats are as comfortable as those of their elder siblings; the Class 378 trains.

There are also lots of armrests.

As on those trains, passengers find their own place to put their legs and the passage up the middle of the train seems to stay free.

There are also no perches either side of the door, as in the Class 378 trains. It this to cut out canoodling?

USB Sockets

There isn’t a large number and they are only accessible from a few seats.

This picture shows the sockets on a Vivarail Class 230 train.

 

I think each armrest should have one.

Wi-Fi

I tested it and it worked

The Train Software

If I was designing something like a train, a tram, a bus or a car, the vehicle would have a backbone, that was compatible with the Internet.

The train software, that seems to have caused the delay could even be an operating system, like the one on your computer or phone.

In my experience, operating systems are very difficult to write, but once they are working, the following is possible.

  • They work for all compatible computers, phones or trains.
  • They can analyse the hardware to see what they’ve got connected.
  • A large team of programmers can write compatible additions, just like thousands write apps for mobile devices.

I also believe that testing operating systems work as they should is one of the most difficult things to do in computing.

I don’t believe that the delay to the Class 710 trains because of software problems has been overly long in my experience.

Complex systems just take an awful long time to get write.

The good news though, is that if Bombardier have got their design right, they may well have cracked the computer systems for all other Aventras.

Conclusion

They tick a lot of boxes and I like the design.

I also feel that if Bombardier have solved the software problems, then Aventras could be delivered in a steady stream.

 

May 23, 2019 Posted by | Computing, Transport | , , | 3 Comments

New Overground Trains Are Here – But Service Remains Reduced Until The Summer

The title of this post, is the same as that of this article on the Barking And Dagenham Post.

The title says most of it, but it appears that the trains will start running today from mid-morning!

May 23, 2019 Posted by | Transport | , | Leave a comment

Where Do They All Come From?

Not the lonely people in the Beatles, Eleanor Rigby, but although some may be lonely, I am referring to the passengers on the North London Line.

Today on the Saturday morning before the Bank Holiday, the Class 378 train was fairly full, with all seats taken and quite a few standing.

When the refurbished line opened in 2009 with new trains, there were six trains per hour (tph) of three-cars between Stratford and Willesden Junction stations. Now there are eight tph of five-cars. This is an increase in capacity of 2.22.

Travel this route in the Peak and it is difficult to find space to put your feet on the floor.

Passenger loading on this line seems to have got higher, since the train frequency increased from six tph to eight in December 2018.

So where do these passengers all come from?

  • Are passengers avoiding the Gospel Oak To Barking Line, because of the reduced capacity?
  • Has the increased frequency on the Victoria Line and new Class 717 trains on the Northern City Line, encouraged more passengers between Highbury & Islington and Stratford stations.
  • Are passengers fed up with being fried on the Central Line?
  • Is it people living in new developments along the line?
  • Is it just people are fed up with driving in North London’s traffic and using trains as an alternative?
  • Is it passengers using the line as an alternative after the non-appearance of Crossrail?

But whatever it is, action needs to be taken to create more capacity.

So what can be done?

Crossrail Needs To Be Opened

Crossrail’s non-appearance must make a difference, so when it finally opens, I will be very surprised if a proportion of passengers travelling to Highbury & Islington, don’t use Crossrail with its massive capacity as an alternative.

Class 710 Trains Will Finally Arrive On The Gospel Oak To Barking Line

When the Class 710 trains are working well on the Gospel Oak to Barking Line, this will mean that the three Class 378 trains, currently working the line, can go back home to the North, West and East London Lines fleet.

The Gospel Oak to Barking Line may also take passengers from the North London Line, once it is working with four tph and four-car trains.

Class 710 Trains On The Watford DC Line

The six Class 378 trains on the Watford DC Line will be replaced with Class 710 trains, thus adding six trains to the North, West and East London Lines fleet.

Extra Class 710 Trains For The North and West London Lines

Six new five-car Class 710 trains will also be delivered for the North and West London Lines.

As Clsas 710 trains can’t work the East London Line, does this mean that the six Class 378 trains cascaded from the Watford DC Line will go to the East London Line.

I have to ask what frequency of services could be run with an extra six trains.

In Gospel Oak-Barking Fleet Plan Remains Unclear, I calculated how many Class 378 trains were needed to run a full service on the North, East and West London Lines.

I said this about the trains needed for North and West London Lines.

Between Stratford and Richmond, trains take 59-64 minutes to go West and 62 minutes to come East.

Between Stratford and Clapham Junction, trains take 62 minutes to go West and 64 minutes to come East.

The round trip times are very similar and are around two and a half hours.

This means that the current eight tph service would need twenty trains

Extending this calculation gives the following numbers of trains for a combined North and West London Lines service.

  • Eight tph needs twenty trains.
  • Ten tph needs twenty-five trains.
  • Twelve tph needs thirty trains.

Could this mean that the North and West London Line will get these services?

Stratford and Willesden Junction – 10 tph

Willesden Junction and Clapham Junction – 5 tph

Willesden Junction and Richmond – 5 tph

There would be one train spare, to cover for maintenance, software updates and breakdowns.

Six-Car Trains

In Will The East London Line Ever Get Six-Car Trains?, I looked at the possibility of six-car trains on the East London Line.

I came to this conclusion.

I will be very surprised if Network Rail’s original plan on six-car trains on the East London Line happens in the next few years.

There are various reasons.

  • Bombardier don’t make Electrostars any more.
  • Trains need an end-door for tunnel evacuation.
  • Class 710 trains don’t have end doors.
  • Some platforms would probably need difficult and expensive lengthening.

But six-car trains on the North and West London Lines could be a possibility.

In By Overground To High Speed Two, I said this about running six-car trains on the North and West London Lines.

Only a few stations can handle six-car trains without selective door opening and even the rebuilt West Hampstead station still has platforms for five-cars.

Selective door opening would allow six-car trains to use the five-car platforms and passengers have in London have shown they can cope with moving forward to get out at certain stations. Especially, as the walk-through design of the train, makes this a lot easier.

These numbers of trains would be needed to run the following frequencies to Richmond and Clapham Junction stations.

  • Four tph – 20 trains
  • Five tph – 25 trains
  • Six tph – 30 trains

Obtaining these numbers of Class 710 trains would probably not be a big problem, if they were needed and the budget was available.

Conclusion

The new Class 710 trains and the moving around of trains should keep services going for a couple of years.

May 4, 2019 Posted by | Transport | , , , , , | 5 Comments

A Better News Day For New Trains

Yesterday, was a better news day for new trains, with articles with these headlines.

All are significant for passengers.

Class 710 Trains

The authorisation of the Class 710 trains is particular importance to me, as they will be running locally to where I live.

It will be a couple of months before they enter passenger service.

But the trains have mainly been delayed by software problems and now that appears to have been fixed and as there are twenty trains already built, I could see them entering service, as soon as drivers have been trained.

It should be noted that eight trains are needed for the Gospel Oak to Barking Line and six for the Watford DC Line, so if twenty have been built, I would expect that these two routes could be converted to the new trains by the summer.

Class 801 Trains

LNER’s Class 801 trains will be a significant introduction, as they will enable the cascade of the Mark 4 coaches to other operators, like Trains for Wales and East Midlands Railway.

April 17, 2019 Posted by | Transport | , , , , , , , , | 2 Comments