The Four-Car Bi-Mode Train
The Class 319 Flex train is an affordable four-car bi-mode or electro-diesel train, promoted by Porterbrook and to be used by Northern.
- The train is affordable, as it is based on a refurbished Class 319 train, which was built thirty years ago.
- The train is a dual-voltage unit and can be powered by either 25 KVAC overhead or 750 VDC third-rail electrification.
- Each unit also has two rail-proven MAN diesel engines, for powering the train on lines without electrification.
If there is a drawback, it is that with their interiors so far, Northern have opted for a no-frills interior with no wi-fi.
Compare this with the interior of a Class 455 train.
The trains were originally built within a couple of years, but the updated interior specified by South West Trains is much more impressive and passenger-friendly than that used by Northern.
Both trains are four-car units and are based on the Mark 3 coach, so underneath the skin, they probably have a lot in common.
There are a large number of four-car trains on UK railways so it must be a train length that is convenient for operators.
But strangely until now there has not been a four-car bi-mode train.
But then bi-mode trains are not that common, with the only UK train of that type; the Class 800 train, yet to enter service.
But the Class 800 train is for the long distance market and is a five-car or nine-car 125 mph train.
I do wonder, if the reason we have no four-car bi-mode trains, is that no-one has bothered to design one so no-one has wanted one.
But Porterbrook own 86 of these Class 319 trains, which are reliable 100 mph trains, that drivers tell me they like, because of their performance and excellent brakes.
Because of their age, they’re probably not worth a great deal more than scrap value, but because of the depth of knowledge of what can be done with Mark 3 coaches, they can be turned into a useful train by quality engineering.
Porterbrook have seen a gap in the market with Northern for a train specifically designed to be able to handle their toughest route, which is Manchester Piccadilly to Buxtonup the very steep Buxton Line. But the train is no one-trick pony and can run on virtually any of Northern’s routes, whether they are electrified or not.
So Northern can use the train for a variety of purposes.
- Running services on routes, that are not fully electrified.
- New route development.
- Extension of existing electrified routes.
- Replacement of a failed unit, which could be electric or diesel
Northern will have two versions of the Class 319 train; electric and bi-mode, just like other train operating companies will have electric and bi-mode versions of the Class 800 train.
I suspect that to passengers and all train staff except the driver, there will not be many obvious differences between the two versions.
Some routes will probably be able to be served by both versions.
The Bombardier Aventra
I feel very much that the Aventra will have one or more independently-powered versions.
The Aventra has a slightly unusual and innovative electrical layout.
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-Iron batteries if required.
This was published six years ago, so I suspect Bombardier have improved the concept.
Perhaps instead of a power storage device, they could squeeze in a small diesel engine and an alternator.
I’ve believed for a long time, that the Class 710 train being built by Bombardier for the London Overground, has onboard energy storage and that I wouldn’t be surprised if it used the storage to capture energy from regenerative braking, just as a lot of hybrid vehicles, like a London Routemaster and a Toyota Prius.
It won’t be a high-power bi-mode like the Class 319 Flex train, but it could have a useful range on the stored energy.
But it will be an all-electric train and probably more energy-efficient.
Other Four-Car Bi-Modes
I can’t believe that other train manufacturers are not looking at various forms of bi-mode trains.
Hitachi make the Class 800 trains at Newton Aycliffe, where they also make the four-car Class 385 train for ScotRail.
And what about Alstom, CAF, Siemens and Stadler?
What About Five Cars?
Four-car trains mean that operators can run eight and twelve car trains, when they are convenient. But other companies prefer five-car and ten-car trains.
We have the Class 800 trains, which are a 125 mph bi-mode, but we don’t have a five-car bi-mode suburban trundler. A few would surely be useful for Southern to handle Uckfield and the Marshlink Line.
I also believe that Greater Anglia’s five-car Aventras could have the limited independent capacity given by onboard energy storage.
I suspect that what the train operators need, the train operators will get!
Conclusion
We will see a complete spectrum of bi-mode four-car trains. And a few fuve-cars too!
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Thoughts And Facts About Class 319 Flex Trains From Manchester And Blackburn Into The Hills
On Thursday and Friday last week, I spent two days in the Premier Inn at Blackburn and explored the rail lines around the town with journeys all over the area that should by now have been fully electrified.
Class 319 Flex Trains
The main reasons to go was to see some Friends In The North and to see Ipswich play at Barnsley, but I also wanted to explore some of the hilly routes in Lancashire.
Porterbrook in their brochure for the Class 319 Flex trains says that the objective for the train is that it can run from Manchester Piccadilly to Buxton on the Buxton Line, under the power that is available, which is electrification only as far as Hazel Grove station.
The Routes With Hills
There are three routes from Manchester and Blackburn that climb into the hills.
- The Ribble Valley Line to Blackburn via Bromley Cross and then on to Clitheroe and Hellifield stations.
- The East Lancashire Line Line to Colne station
- The Buxton Line to Buxton station.
The lines are not for low-powered trains and the current Class 150 or Class 156 trains struggled on the three climbs I did.
- Hazel Grove to Buxton in the afternoon.
- Blackburn to Clitheroe early in the morning.
- Bolton to Blackburn, crush-loaded in the rush hour.
Someone told me, that leaf fall can be a problem in the Autumn.
In no particular, these are my thoughts and some facts from other sources and my observations.
Blackburn Depot
A conductor told me that Northern Rail will be creating a depot and basing train crew at Blackburn.
This article in the Lancashire Telegraph is entitled Multi-million pound train depot set for Blackburn.
This is said.
Blackburn is to get a new multi-million pound train depot as the latest stage of East Lancashire’s rail revolution.
The stabling, maintenance and cleaning centre will include an office block and new connection to the existing Bolton junction where the tracks to Preston and Darwen divide.
If as I believe the Class 319 Flex trains could serve Clitheroe/Hellifield and Colne, then it could be an ideal location. Especially, if the Clitheroe/Hellifield and Buxton services were run back-to-back across Manchester.
Double Track Most Of The Way
The three lines have the following track layouts.
- The Ribble Valley Line has a large proportion of double track, which stretches to Hellifield.
- The Buxton Line is double-track.
- The East Lancashire Line is single-track from Rose Grove station to Colne station.
So hopefully, if two trains per hour (tph) were to be run on these three branches, passing would be possible.
Hellifield
Hellifield station is where the Ribble Valley Line connects to the Settle-Carlisle Line.
A conductor told me that he’d heard that Northern would like to serve Hellifield more regularly.
Since I first wrote this, I’ve heard that the tracki at Hellifield has been recently replaced and is in good condition.
Housing And Other Property Development
As I travelled along the lines to Clitheroe and Buxton, there was a lot of housing development along the line, at places like Clitheroe, Hazel Grove, Whalley to name just three.
The crowded trains I used in the Peak to Blackburn are going to carry even more passengers and the need for capacity with power on these lines will increase.
Tourism Issues
Buxton, Clitheroe Colne and Hellifield all have reasons for tourists and especially those that enjoy visiting the hills.
I have no figures to back it up, but I suspect leisure passengers often go loaded with children in buggies, bicycles and heavy rucksacks and cases. They certainly do in the Summer on the trains of East Anglia and that is flat.
Add in the weather forecast and the effects of new trains and at times, there could be a large increase in leisure and tourism-related travel.
If the trains connected the Settle and Carlisle Line at Hellifield to Blackburn, Manchester and perhaps Buxton, this would surely open up a tourist train route, that Doctor Beeching wouldn’t have thought was the least bit feasible.
Future Train Frequencies
Train frequencies to Manchester could possibly grow to the following.
- Blackburn – 2 tph to Manchester Piccadilly
- Blackburn – 2 tph to Manchester Victoria
- Buxton – 2 tph
- Clitheroe – 2 tph
- Hazel Grove – 4 tph
In addition, the intersecting route from Blackpool South to Colne via Preston and Blackburn, could be running 2 tph.
I do suspect though, that 1 tph to and from Hellifield will be enough. But who knows? I could just be as wrong as Beeching.
The lines probably have a Peak problem, that is fairly unusual in the UK, but probably is common in countries with real mountains like Austria, Japan and Switzerland. One direction of Peak travel is downhill, but the other is up a very steep railway.
On train frequencies, this is said in the Wikipedia entry for the Ribble Valley Line.
A six-week engineering blockade saw the existing passing loop there extended by 1 mile (1.6 km) at each end and signalling improvements made to add capacity on the line and allow for service frequencies between Bolton & Blackburn to be doubled to two trains per hour each way throughout the day from December 2017.
Could this be why, Porterbrook are planning to deliver four refurbished Class 319 Flex trains by the end of 2017, according to their brochure?
Some powerful extra trains will probably be needed to achieve the objective of 2 tph to Blackburn and four Class 319 Flex will help.
Future Train Capacity
I did two journeys in the Peak to Blackburn; in the first I took the slower service via Todmorden and Burnley in a two-car train and in the second, I took the direct route via Bromley Cross, in a four-car formation.
The second was the most crowded, but it was Friday. It also struggled up the hill from Bolton to Blackburn.
Northern’s decision to go for a four-car Class 319 Flex train which could be used on some of these routes, is understandable.
Blackburn To Huddersfield
I travelled to Huddersfield station from Manchester Victoria and didn’t see any signs of electrification on this important route.
Returning to Blackburn from Huddersfield, my train was a direct service which travelled via Manchester Victoria, Bolton and Bromley Cross.
This would be an ideal service to run using a Class 319 Flex train, until Network Rail get their act together and electrify Manchester Victoria to Huddersfield. Even if they only get the wires as far as Stalybridge, the Class 319 Flex would be an enormous improvement compared to the asthmatic Class 156, that struggled with its full load of passengers to Blackburn.
The Calder Valley Line
The Calder Valley Line goes through very picturesque countryside between Preston and Leeds.
I think that full electrification of this line could never happen.
- The line has large numbers of stone and brick viaducts and bridges, which would be very expensive to modify for electrification.
- The station at Hebden Bridge is Grade II Listed.
- There is electrification between Leeds and Bradford, which could probably be extended as far as Halifax.
- Preston is fully electrified and affordable electrification to Blackburn or perhaps Rose Grove or Burnley Manchester Road stations should be possible.
- Electrification to Rose Grove would mean that the service between Blackpool South and Colne could be run using electricity between Rose Grove and Kirkham and Wesham stations.
But the biggest problem would be the opposition to overhead gantries in the hills.
The distances are revealing.
- Burnley to Halifax is just over twenty miles
- Blackburn to Halifax is just over thirty miles.
If Halifax to Bradford wasn’t electrified then that adds another ten miles.
All distances would be within range of a modern bi-mode train, including a Class 319 Flex.
Other Destinations
From Hazel Grove, it is possible for diesel trains to access the Hope Valley Line towards Sheffield.
There must be stations on this line that are possible destinations for a Class 319 Flex train.
Chester and Windermere have also been mentioned as future destinations for the train.
Electrification
Electrification has been painfully slow in the North-West, as it has in most places in the UK.
It looks like that by the end of 2017, Manchester to Preston via Bolton and the Blackpool Branch to Blackpool North station will be electrified.
The advantage of the Class 319 Flex is that it can use this electrified set of lines to run services to stations like Barrow, Blackburn, Blackpool South, Burnley, Chester, Hebden Bridge, Sellafield and Windermere, that are off the electrified network in conjunction with the Class 319 trains.
The Need For A Train To Climb The Hills
From this brief analysis and my observations, it would seem that Northern need a few four-car trains with adequate power to get up the hills at a speed, that enables an efficient timetable. As some of the routes from Manchester Piccadilly and Victoria are electrified, the ideal train would need the capability to use the wires.
If ever, there was a series of routes that need a bi-mode train, then it is these routes.
The Class 319 Flex And The CAF Civity
The Class 319 Flex has according to the brochure I’ve seen been designed to run from Manchester to Buxton with a full load of passengers in the Peak or perhaps after a City-United Derby.
But Northern have ordered new CAF Civity trains in the following versions.
- 25 two-car Class 195 diesel trains
- 30 three-car Class 195 diesel trains
- 31 three-car Class 331 electric trains
- 12 four-car Class 331 electric trains.
This is said in the Wikipedia entry for the Class 331 trains.
In early 2016 it was confirmed that Spanish rolling stock manufacturer CAF would construct the new electric powered trains which are planned to operate in West Yorkshire to replace Class 321 and Class 322 trains and work alongside the current fleet of Class 333 units. The four-car Class 331 units will be deployed on electrified services from Manchester Piccadilly to replace the Class 323 units which are due to return to Porterbrook at the end of their current lease in 2018.
So it would appear that the Class 319 trains will continue to operate for a few years yet! Hopefully with better seats, wi-fi and a few other smaller improvements.
I think that Northern have decided that until the Class 195 trains arrive that the Class 319 Flex trains are the best short-term solution. But given the overcrowding on the routes will the future three-car trains have enough capacity?
So I suspect, if Northern go the CAF Civity route, I feel that Northern will acquire some longer diesel trains or even some dual-power Civitys.
But at least running Class 319 Flex trains on the route will effectively produce the specification for these hilly routes.

