Train Graphic
Great Western Passengers' Forum Great Western Coffee Shop - [home] and [about]
Read about the forum [here]. Register and contribute [here] - it's free.
Random Image
Train Running @GWR Twitter Acronyms/Abbreviations Station Comparator Rail News GWR co. site Site Style 1 2 3 4 Chat on off
June 19, 2018, 09:44:33 am *
Welcome, Guest. Please login or register.

Login with username, password and session length
Forgotten your username or password? - get a reminder
Most liked recent subjects
[102] Same-day Advance fare trial on GWR
[65] Heathfield Branch Line - freight use and campaign to restore p...
[56] HST loco fire at Plymouth Station
[55] Great Western Main Line electrification - ongoing discussion
[30] Incident at Loughborough Junction, South London. Three dead. 1...
[30] 2018 cancellation and amendment log
News: A forum for passengers ... with input from rail professionals welcomed too
   Home   Help Search Login Register  
Pages: 1 2 [3]
Author Topic: Independently Powered EMU to be tested  (Read 18749 times)
TransWilts Member
Hero Member
Posts: 15557

Question everything.

View Profile
« Reply #30 on: May 14, 2015, 12:37:43 am »

Donald 'Duck' Dunn in The Blues Brothers said, "If the 5h!t fits, wear it."

He also said he was in a band, "powerful enough to turn goat p!55 into gasoline."

There's your answer. Get a blues band together, throw in a few micturating ungulates and you've got a ready source of fuel. Job's a good 'un.


Former FGW/GWR regular passenger. No more. Despicable company.
Hero Member
Posts: 6519

View Profile
« Reply #31 on: May 14, 2015, 01:41:14 am »

Note to self:  Must tighten up the profanity filter.   Grin  Grin
Four Track, Now!
Global Moderator
Hero Member
Posts: 3594

I know nothing. Really.

View Profile Email
« Reply #32 on: May 14, 2015, 08:01:06 am »

Or we could just be posting sh!t.

 Shocked Roll Eyes Tongue Grin

It happens.

Now, please!
Hero Member
Posts: 20565

View Profile WWW Email
« Reply #33 on: May 04, 2017, 05:14:42 am »

An update on the IPEMU ... (I think we have several threads ...)

Posted on 03 May 2017 and read 221 times
Battery-powered trains possible for WalesThe UK Government is not guaranteeing that it will give Wales a promised £125 million contribution for electrifying the Valley Lines, if alternative technology is chosen.

Indeed, a Welsh government transport official has confirmed that it is looking at cheaper alternatives to electrification — including battery-powered trains. These have already been trialled in parts of the UK as replacements for costly (and heavy) diesel trains.

Called independently powered electric multiple units (IPEMUs), the trains are powered by lithium iron magnesium phosphate batteries

The costs and timescales of railway electrification have risen dramatically since 2014, when David Cameron made the pledge, and this has led the Welsh Government to “take soundings” from rail experts in Europe and Asia onalternatives for the Valley Lines (potentially including new technology such as battery-powered rolling stock): and while a UK Government civil servant said earlier this month that the Department for Transport had not yet decided if the £125 million “would still be available” if an alternative to electrification were chosen, the Welsh Government said it should not be penalised for exploiting technological developments.

Simon Jones, the Welsh Government’s transport director, said: “We might end up with some kind of hybrid solution that involves battery-powered trains, for example. When Mr Cameron made his pledge in 2014, I guess it was envisaged that we would be putting in pylons for the entire length of the Valley Lines.

We may not need to do that because of the way that technology has moved on, but we shouldn’t be penalised for finding a different technological approach to delivering the same outcome.”

TransWilts Rail - Linking North to West and South 9 times a day. [see here]
Sr. Member
Posts: 239

View Profile
« Reply #34 on: May 16, 2017, 02:11:09 pm »

I'm a follower of Noel Dolphin of Furrer+Frey (who make OLE kit for NR) and he seems to have been spending lots of time in Cardiff, spends lots of time talking about their recharging stations, and the other day was on the new VivaRail mock up of the old London Underground D stock which has had batteries fitted.

I'd joked a while ago that if VivaRail agreed to them being converted in Wales, then the Assembly might have them as a cheap source of new stock for the Valleys, but perhaps I wasn't too far off the mark? A few lengths of switchable 3rd and 4th rail in strategic locations should be enough to charge the things, and regenerative braking should mean that they can top themselves up on the way down the hill.

Hero Member
Posts: 1846

View Profile
« Reply #35 on: May 16, 2017, 07:52:06 pm »

Conductor rail charging at stations is certainly possible, I suspect that the conductor rail would have to be dead normally and only rendered live when a train was over it.
Unless the conductor rail was at a less dangerous voltage such as 110 volt DC.
Despite the vast currents involved 110 volt should be doable with the transformer and rectifier mounted close to the track.
Or light duty and simple overhead within the station. Both the overhead and the pantograph could be much cheaper and much simplified if only used when stopped rather than at speed.

"When customers say that they want a seat, they dont mean they want to sit with their knees behind their ears so that 4 more can sit down. They mean that they want an extra coach so that 74 more can sit down"
"Capacity on intercity routes should be about number of vehicles, not compressing people"
Do you have something you would like to add to this thread, or would you like to raise a new question at the Coffee Shop? Please [register] (it is free) if you have not done so before, or login (at the top of this page) if you already have an account - we would love to read what you have to say!

You can find out more about how this forum works [here] - that will link you to a copy of the forum agreement that you can read before you join, and tell you very much more about how we operate. We are an independent forum, provided and run by customers of Great Western Railway, for customers of Great Western Railway and we welcome railway professionals as members too, in either a personal or official capacity. Views expressed in posts are not necessarily the views of the operators of the forum.

As well as posting messages onto existing threads, and starting new subjects, members can communicate with each other through personal messages if they wish. And once members have made a certain number of posts, they will automatically be admitted to the "frequent posters club", where subjects not-for-public-domain are discussed; anything from the occasional rant to meetups we may be having ...

Pages: 1 2 [3]
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.2 | SMF © 2006-2007, Simple Machines LLC Valid XHTML 1.0! Valid CSS!
This forum is provided by a customer of Great Western Railway (formerly First Great Western), and the views expressed are those of the individual posters concerned. Visit for the official Great Western Railway website. Please contact the administrators of this site if you feel that the content provided by one of our posters contravenes our posting rules (email link). Forum hosted by Well House Consultants