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Post by domh245 on Dec 28, 2015 22:02:25 GMT
I would imagine a Ford Transit diesel would be no better and no worse than any other (as fans of Scrapheap Challenge will know, diesel engines, having no need of spark ignition, can even work when submerged), although newer ones with electronic fuel injection systems may need to be protected. How does that work then? Diesel engine + water = no oxygen, and worse, hydrolocked...? Obviously, they don't work completely underwater - but diesel engines can deal with higher water content than an unleaded engine can. Diesel engines should quite easily deal with a drenching from a wave, especially as I imagine that the actual air intake is situated underneath the train body and hence somewhat shielded from the vast majority of water. |
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Post by norbitonflyer on Dec 28, 2015 22:36:53 GMT
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Post by 100andthirty on Dec 29, 2015 13:03:25 GMT
Antharro: for the point about under-water diesel engines (most of them are swathed in a jacket of water, anyway, to keep them cool). If they do become submerges, they will keep running provided the air intake and, generally, the exhaust are kept above the water level.
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Post by melikepie on Dec 29, 2015 16:34:02 GMT
How do you think they will compare to any Pacer?
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Post by domh245 on Dec 29, 2015 16:53:37 GMT
How do you think they will compare to any Pacer? Favourably! They should ride a fair bit better, and they will actually be waterproof. They should also be quicker between stops on lines where the stations are close(ish) together. They will probably also have a nicer ambience than the pacers. |
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Post by antharro on Dec 29, 2015 16:59:43 GMT
I'm a bit of an amateur mechanic on the side, so I'm quite familiar with the internal combustion engine. I was, incorrectly, assuming that norbitonflyer was referring to full submersion which would not work for reasons detailed. However as long as the exhaust and air intake are secured from water ingress then yes, the engine itself should be fine in wet conditions... including the line by Dawlish.  How do you think they will compare to any Pacer? Favourably! They should ride a fair bit better, and they will actually be waterproof. They should also be quicker between stops on lines where the stations are close(ish) together. They will probably also have a nicer ambience than the pacers. I wonder how they'd compare with Porterbrook's refurbished Pacer... www.railwaygazette.com/news/passenger/single-view/view/porterbrook-unveils-pacer-dmu-life-extension-demonstrator.html |
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Post by domh245 on Dec 29, 2015 17:41:52 GMT
The only things that have happened to that pacer are cosmetic - it is still a bus body attached to a high speed freight wagon with an engine attached (and likely to cause a bit of damage to it's occupants in the event of a crash). The 230s have the inherent benefit of being a 'proper' rail vehicle. You could easily specify the D train's interior to be like the e-pacer, but it will won't squeal round corners, and can have more than 3 doors per side per train.
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Post by Deleted on Dec 31, 2015 14:48:10 GMT
in the latest live rail it says that southern have decided not to use class 230 on the marsh link.
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rincew1nd
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Post by rincew1nd on Jan 22, 2016 22:46:24 GMT
Viva Rail have released this video of a two car unit in action:
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Post by domh245 on Jan 22, 2016 23:04:57 GMT
It does look very impressive, but it is a shame that it looks like they are running out of places where they could go.
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Post by philthetube on Jan 23, 2016 1:19:13 GMT
If diesel units are sitting in sidings ready to go it will be a brave government which tells passengers tough, carry on being shoehorned into class 142's because, EXCUSE, EXCUSE, EXCUSE.
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Post by christopher125 on Jan 23, 2016 1:43:31 GMT
I see Claire Perry also visited on Thursday.
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Post by Tubeboy on Jan 23, 2016 7:18:11 GMT
It does look very impressive, but it is a shame that it looks like they are running out of places where they could go. I think Arriva trains Wales is one of the very few that are still interested. |
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Post by whistlekiller2000 on Jan 23, 2016 9:48:05 GMT
It does look very impressive, but it is a shame that it looks like they are running out of places where they could go. I think Arriva trains Wales is one of the very few that are still interested. Have Vivarail got any contingency plans as to where these trains will go if the UK turns out to be a dead market or are they just going to pass them on for scrap? |
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Post by domh245 on Jan 23, 2016 10:30:01 GMT
They would be sold on again for scrap, with the other costs written off, potentially as research for another conversion project later down the line. It would be a massive shame if that were to happen though
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Post by brigham on Jan 23, 2016 14:45:25 GMT
They would be sold on again for scrap, with the other costs written off, potentially as research for another conversion project later down the line. It would be a massive shame if that were to happen though Particularly when four-wheel passenger stock is still in service. |
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Post by norbitonflyer on Jan 23, 2016 14:51:12 GMT
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Post by decaded on Apr 18, 2016 19:02:56 GMT
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Post by superteacher on Apr 18, 2016 20:31:01 GMT
Can't see any chance of downgrading an electric service to diesel! |
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Post by phil on Apr 19, 2016 7:07:44 GMT
Can't see any chance of downgrading an electric service to diesel! Why not? The electrified Lymington branch in Hampshire is worked by a diesel unit during the week and an electric unit at weekends. This frees up a 4 car electric unit for use on busy London services (4 cars are overkill for the branch in capacity terms) while the use of an EMU at weekends keeps traction / route knowledge current and ensures the electric traction supply is kept in good order. The Upmister branch is in fact an ideal test bed for the D stock - its a totally self contained branch, has a depot (Ilford) not far away, and if the unit did run into problems has handy bus services nearby to deputise. |
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Post by stapler on Apr 19, 2016 7:30:02 GMT
Having spent some time oop north recently, riding in various 80s bus conversions and throaty 150s, the sooner the better...
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Post by rtt1928 on Apr 19, 2016 10:51:58 GMT
Having spent some time oop north recently, riding in various 80s bus conversions and throaty 150s, the sooner the better... I am in full agreement with that. |
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Post by domh245 on Apr 19, 2016 13:10:57 GMT
Having spent some time oop north recently, riding in various 80s bus conversions and throaty 150s, the sooner the better... To my disappointment, the 230s won't be headed northwards - the new Northern franchise instead getting trains like this in both EMU and pure DM(M)U flavours. The next best bet for them will be a Midlands franchise, Anglia, or GW. |
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Post by sawb on Apr 19, 2016 16:30:52 GMT
I for one would be very surprised if the "main line run" comes to anything, given that the DfT have already said some time ago they are not prepared to authorise these trains for use.
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Post by brigham on Apr 19, 2016 16:41:23 GMT
Can't see any chance of downgrading an electric service to diesel! I hope those days are well-and-truly over. |
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Post by crusty54 on Apr 19, 2016 19:05:10 GMT
I for one would be very surprised if the "main line run" comes to anything, given that the DfT have already said some time ago they are not prepared to authorise these trains for use. far from it - they have said they can run as D stock is cleared for NR tracks. They only ruled them out from two franchises. Look at the Vivarail website. |
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Post by norbitonflyer on Apr 19, 2016 19:18:05 GMT
Can't see any chance of downgrading an electric service to diesel! There have been many examples, usually when the electric infrastructure became life-expired. Newport-Shildon, Sheffield- Penistone, Tyneside electrics (later re-electrified as the Metro), plus any number of tram and trolleybus networks. Just last week: www.theguardian.com/world/2016/apr/12/end-road-moscow-trolleybuses-campaign . |
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Post by superteacher on Apr 19, 2016 20:21:30 GMT
Can't see any chance of downgrading an electric service to diesel! There have been many examples, usually when the electric infrastructure became life-expired. Newport-Shildon, Sheffield- Penistone, Tyneside electrics (later re-electrified as the Metro), plus any number of tram and trolleybus networks. Just last week: www.theguardian.com/world/2016/apr/12/end-road-moscow-trolleybuses-campaign . In London though? Would be a political no no of the highest order! |
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Post by Deleted on Apr 19, 2016 20:25:25 GMT
The Upmister branch is in fact an ideal test bed for the D stock - its a totally self contained branch, has a depot (Ilford) not far away, and if the unit did run into problems has handy bus services nearby to deputise. Why even Ilford? There is an unfinished link to lul tracks at the end of Upminster station from the aborted idea of using it to send the D stock for refurbishment. Contract it to Upminster depot. They already know the basics of the train. It would just need a few more stabling roads paid for. But its probably not economic to do this option. |
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Post by xercesfobe on Apr 19, 2016 20:38:02 GMT
These trains could be a low cost option to provide public services on some of heritage lines on weekdays and enable these railways to increase their revenues!
XF
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