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Visible signs of Thameslink 2000
Shame they went with the GN link to St Pancras option rather than the
tunnel to Bermondsey. That would probably have given a far greater benefit (i.e. 48 tph through central London), with less need for the works at London Bridge (if Thameslink stopped serving London Bridge and just ran down to East Croydon via Herne Hill), not to mention the reduction in route pollution. |
Visible signs of Thameslink 2000
I've just submitted an e-mail about the sensationalist language on the
site. I know there's a tendency to 'dumb down', but I find the tone rather insulting: "This is a useful site, but why do you have to use such a childish and hyperbolic writing style: 'We know this will come as a shock', 'Take a deep breath' and 'Brace yourself'? Do you really think your passengers are so thick that they need this sort of introduction to information? I think that your passenger surveys would find that most travellers understand more than Primary School English. I find it rather insulting - even The Sun doesn't (yet) use this sort of language! I would appreciate hearing from you, preferably in adult English. I'm clinging to the edge of my seat. Speed your reply to me to save my bacon." I'll let you know if I hear anything from them :-) |
Visible signs of Thameslink 2000
Kev wrote:
On Oct 19, 11:04 am, Rupert Candy wrote: Like many on these groups, I try not to believe any transport project is actually happening "until they start digging". So, having been away for a week or so, I was gratified to notice several signs that "Thameslink 2000" (or whatever they're calling it these days) might actually happen. They've started piling at the southern end of Blackfriars railway bridge (by the old bridge supports) - presumably for the second river crossing - and there are hoardings at Farringdon by the north end footbridge, though no signs of actual construction yet. I also noticed a stripy eye-catching "Thameslink Project" information stand at Moorgate - currently empty, but presumably will soon hold "You're not getting any Thameslink trains any more" leaflets... I think that you naive attitude to how a project is implemented then. Now wonder there are many scew ups when people think that all that is involved in implementing a project is to "dig holes". Of course you can cut corners and just face the consequences when it all goes belly up. But if you spend forever planning, nothing even happens. Though no doubt the people of Leeds and Gosport will be laughing when the major cities of France and Spain sink into a hell brought about by their so-hasty construction of all those tram projects.... Once holes are being dug there is a chance something might actually happen. Important though it may be, while we are still at the stage of assessing the impact of the project on the one-legged Welsh lesbian community, or re-announcing the same project to the local papers for the eighth time, things seem a very long way off. A while ago I was talking to someone who was involved in designing stations for Crossrail. Can they dust-off the models of the previous plan in the museum at Acton depot, I asked. "Models, what models?" -- Arthur Figgis Surrey, UK |
Visible signs of Thameslink 2000
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Visible signs of Thameslink 2000
"Roland Perry" wrote in message
... As commented a few months ago, the direct link to St Pancras has been long-awaited... -- What is that tunnel that goes off to the right, just north of SPI? |
Visible signs of Thameslink 2000
In message , at 22:08:14 on Thu, 23
Oct 2008, remarked: As commented a few months ago, the direct link to St Pancras has been long-awaited... What is that tunnel that goes off to the right, just north of SPI? That's the future link to the ECML. Luton's already on the Midland Mainline. -- Roland Perry |
Visible signs of Thameslink 2000
On Oct 20, 11:37*pm, wrote:
I saw a leaflet tonight. It's got so many colours on it I wondered if they decided they wanted bright colours on it, couldn't agree which ones to use, so decided to use them all. You wait until the 319 (well rumoured to be two 319s) appears in that scheme. -- Nick |
Visible signs of Thameslink 2000
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Visible signs of Thameslink 2000
On Oct 24, 9:46*pm, D7666 wrote:
On Oct 20, 11:37*pm, wrote: I saw a leaflet tonight. It's got so many colours on it I wondered if they decided they wanted bright colours on it, couldn't agree which ones to use, so decided to use them all. You wait until the 319 (well rumoured to be two 319s) appears in that scheme. Ah, it'll coordinate beautifully with the pink and purple interior. Assuming they ever get round to pink-and-purplising the 319/0s' interiors... |
Visible signs of Thameslink 2000
On 20 Oct, 11:30, D7666 wrote:
On Oct 20, 12:11 pm, Roland Perry wrote: In message , at 04:06:19 on Mon, 20 Oct 2008, D7666 remarked: I won't believe it's finished until I can get a through train from Cambridge to Gatwick - one of the original I am now of the opinion you won't. Even though they completed the tunnelling into SPILL I have alwys been sceptical about connecting up GN to it. They are going to all this trouble of re-arranging appoaches to Blackfriars and south/east thereof to avoid as far as possible conflicting moves to make 24 TPH in the core work, and then build a new junction across which every move will conflict right *in* the core ?!?!?!? Is it a flat junction? I thought the northbound line tunnelled under. -- Roland Perry Each switch forms a flat junction on both roads - even if there is no crossing by tunnelling. When running 24 TPH you don't really want any points at all. Don't forget these are long 12 car trains running into or out of the SPILL station stop - and all trains will stop - they ain't going to be high speed across the convergence point. Take the Jubilee line now (before resgignalling). That is planned 24 TPH in the peaks, with trains half that length, and it barely works. Now put in a new junction at say London Bridge, right off the end of platforms of one of the busiest core stations, even with a dive/fly to avoid a crossing, but nonetheless convergence points on both west and eastbound roads. *You reckon 24 TPH would still work ? It works with the Munich S-Bahn. However, they do have double sided platforms. One of the problems with the Jubilee is some stations are quite quick (Waterloo East) and others are slow because of passenger volumes (Canary Wharf, LB, Waterloo). How will the spread be on Thameslink? -- Nick -- Nick |
Visible signs of Thameslink 2000
On 2008-11-07 11:37:19 +0000, disgoftunwells said:
On 20 Oct, 11:30, D7666 wrote: On Oct 20, 12:11 pm, Roland Perry wrote: In message , at 04:06:19 on Mon, 20 Oct 2008, D7666 remarked: I won't believe it's finished until I can get a through train from Cambridge to Gatwick - one of the origi nal I am now of the opinion you won't. Even though they completed the tunnelling into SPILL I have alwys been sceptical about connecting up GN to it. They are going to all this trouble of re-arranging appoaches to Blackfriars and south/east thereof to avoid as far as possible conflicting moves to make 24 TPH in the core work, and then build a new junction across which every move will conflict right *in* the core ?!?!?!? Is it a flat junction? I thought the northbound line tunnelled under. -- Roland Perry Each switch forms a flat junction on both roads - even if there is no crossing by tunnelling. When running 24 TPH you don't really want any points at all. Don't forget these are long 12 car trains running into or out of the SPILL station stop - and all trains will stop - they ain't going to be high speed across the convergence point. Take the Jubilee line now (before resgignalling). That is planned 24 TPH in the peaks, with trains half that length, and it barely works. Now put in a new junction at say London Bridge, right off the end of platforms of one of the busiest core stations, even with a dive/fly to avoid a crossing, but nonetheless convergence points on both west and eastbound roads. *You reckon 24 TPH would still work ? It works with the Munich S-Bahn. However, they do have double sided platforms. At the risk of being pedantic the S-Bahn in Munich schedules 30 trains per hour during the peaks (admittedly not at the moment as there have been problems with the brakes/wheel slide protection during the autumn and the automatic door closing equipment, but these should be cleared up by the beginning of next year). Only the 3 busiest stations of the 5 in the tunnel section have the double sided arrangement (the Hauptbahnhof, Karlsplatz/Stachus and Marienplatz), but the Ostbahhof has 4 platforms dedicated to the S-Bahn service so the trains can be launched into the tunnel section. Note that two lines, currently the S5 and S6, /reverse/ at the Ostbahnhof. At Donnersbergerbrücke, west of the Hbf, routes from the south and from the west come together on each side of an island platform; they join just east of the station for the run towards the city centre via the Hbf. The signalling is such that about 75 seconds after a train has left one platform the one on the opposite face can also leave. These trains are quick - the Baureihe 423 is an articulated unit with 4 body sections carried on 5 bogies, 4 of which are powered. It has an empty mass of 105 tonnes with an hourly rating of 2400kW which gives a power-to-weight ratio somewhat better than that of a Deltic running light! They also have /lots/ of doors - each body section has 3 pairs of swing-plug doors so half the side of the train opens. Trying to run a 24tph service with only 2 doors per side in a longer coach body, single sided platforms and a lower power-to-weight ratio seems to me to be hard way to earn a living. One of the problems with the Jubilee is some stations are quite quick (Waterloo East) and others are slow because of passenger volumes (Canary Wharf, LB, Waterloo). How will the spread be on Thameslink? -- Nick -- Nick -- Robert |
Visible signs of Thameslink 2000
On Nov 7, 2:26 pm, Robert wrote:
At the risk of being pedantic the S-Bahn in Munich schedules 30 trains per hour I have commuted for short periods on the Munchen U-bahn and S-bahn and was very familiar with it, although I've not been there in a while to seriously use it apart from the airport links. Nowhere on the Mch S-bahn stammstrecke (the core section) are there junctions of any sort on the twin track core - only at the ends. The equivallent scenario for Thameslink is no junctions at all anywhere between West Hampstead and Blackfriars *and* to make the analogy correct both of those locations would have to have 4 each dedicated TL platforms. On top of that, Mch S-bahn is equipped with LZB. AFAIK this is unique among German S-bahn lines ... Mch Pasing to Mch Ost was equipped for LZB operation from 12/2004 ... IIRC it was set up for 28 TPH although might have been tweaked since. For those who do not know, LZB ''Linienzugbeeinflussung'' generically is a transmission based train control signal system. It exists in several forms on both very high speed lines and dense close headway metro lines ... no lineside signals, cab signals only, and operates by setting target points based on location of preceding train or state of the ''guideway''. I am loathe to post a wikipedia link but this is about the only overview I know of (in German but you can wiki translate it) http://de.wikipedia.org/wiki/Linienzugbeeinflussung AFAIW such grandiose signalling systems do not form part of Thameslink Program ... it will retain conventional trackside aspects with TPWS and AWS. ISTR Roger Ford referred to this in MR a couple of years back (although things might have moved since then). If I thought Thameslink was getting LZB then I'd not have made the remarks I did. BTW ... the Jubilee (and Northern, Piccadilly) line signals upgrade is to LZB ... Seltrac S40 is an LZB ... it even says LZB on the processor cabinets/ -- Nick |
Visible signs of Thameslink 2000
On Nov 7, 11:46 pm, D7666 wrote:
correction If I thought Thameslink was getting LZB then I'd not have made the remarks I did. If I thought Thameslink was getting LZB or any other form of tbtc/cbtc then I'd not have made the remarks I did. -- Nick |
Visible signs of Thameslink 2000
On 7 Nov, 18:46, D7666 wrote:
AFAIW such grandiose signalling systems do not form part of Thameslink Program ... it will retain conventional trackside aspects with TPWS and AWS. ISTR Roger Ford referred to this in MR a couple of years back (although things might have moved since then). ATO of some form in the central section is in the spec for the new trains. They're also meant to have three doors per side. (And Crossrail is also meant to have ATO, while we're on the subject) U |
Visible signs of Thameslink 2000
On Nov 8, 1:26 am, Mr Thant
wrote: ATO of some form in the central section is in the spec for the new trains. They're also meant to have three doors per side. Yes I have read that. I do not understand how you can spec a train for ATO when it is not known what that ATO system is. AFAIW no form of ATO has been decided for trackside. There are ATO signalling systems that use inductions loops [like Seltrac / LZB] - or by other radio communication - or by coded track circuits - to name three types. All different track:train interface, all different on board train eqpt. Thales (ex Alcatel), Alstom, Bombardier, Hitachi. GE (of USA), Invensys (a.k.a. Westinghouse) all offer different ATO products ... and those are the ones I can think of without researching it; possibly Siemens and ABB do as well. The current Jubilee line modifications on 1996 stock do not use the orginal Westinghouse kit that the trains still carried from the original aborted project, they get new docking loops and antennae and processors and cabling and so on. All different kit. I might be wrong, but I do not believe they have drawn up a spec for the trackside part of ATO yet ? At least not in the public domain. There is then the complication in the tendering process that a train maker will probably only offer ''in house'' ATO . Or is it a composite spec for traisn and trackside ... but if so then there are one hell of a lot pf pages missing from stuff in the public domain. -- Nick |
Visible signs of Thameslink 2000
On 2008-11-07 23:46:29 +0000, D7666 said:
On Nov 7, 2:26 pm, Robert wrote: At the risk of being pedantic the S-Bahn in Munich schedules 30 trains per hour I have commuted for short periods on the Munchen U-bahn and S-bahn and was very familiar with it, although I've not been there in a while to seriously use it apart from the airport links. Nowhere on the Mch S-bahn stammstrecke (the core section) are there junctions of any sort on the twin track core - only at the ends. The equivallent scenario for Thameslink is no junctions at all anywhere between West Hampstead and Blackfriars *and* to make the analogy correct both of those locations would have to have 4 each dedicated TL platforms. It's a bit more complicated than that. I think that you will find that the Stammstrecke is defined as the section from Pasing to Munich-Ostbahnhof, a distance of marginally over 7 miles; it is not just the central tunnel section. (By my calculation I make West Hampstead to Blackfriars a bit over 5 1/2 miles). Working from the west, 4 routes come together at Pasing, which has 4 S-Bahn platforms paired by direction; it is then a two track route right through to Munich-Ostbahnhof with grade separated junctions at: (i) Laim where the S1 and S2 lines join and leave which has 1 eastbound island platform with 2 faces and 1 westbound platform. The eastbound junction points are just to the east of the island and the westbound junction points are just to the west of the platform. (ii) Donnersbergerbrücke which has 2 island platforms - 1 eastbound and 1 westbound allowing cross platform interchange for passengers between the Bayerische Oberland Bahn (BOB) trains and the S-Bahn. The S7 coming from the south, which shares tracks with the BOB trains, also joins and leaves the Stammstrecke here. There is another very steep grade separated junction just to the east of Donnerbergerbrücke which allows the BOB trains (which are DMUs) to run into the Hbf, i.e. Donnersbergerbrücke has grade separated junctions at both ends of the platforms permitting the platforms to be paired by direction. (The BOB serves towns south of Munich in the foothills of the Alps). The next station to the east is Hackerbrücke which is simple island platform. The central tunnel starts just to the east and runs to just west of the Ostbahnhof which has 2 islands for the S-Bahn. The inner faces are used for the S5 and S6 which reverse there (and head to the south on a bridge over the tracks into and out of the tunnel) and the outer platforms for the 3 routes continuing to the east and north. The S7 terminates here. You are, of course, correct in saying that the stations at each end of the Stammstrecke have 4 dedicated S-Bahn platforms to cope with the traffic density, but there are junctions in between. It works because it has been properly designed. On top of that, Mch S-bahn is equipped with LZB. AFAIK this is unique among German S-bahn lines ... Mch Pasing to Mch Ost was equipped for LZB operation from 12/2004 ... IIRC it was set up for 28 TPH although might have been tweaked since. For those who do not know, LZB ''Linienzugbeeinflussung'' generically is a transmission based train control signal system. It exists in several forms on both very high speed lines and dense close headway metro lines ... no lineside signals, cab signals only, and operates by setting target points based on location of preceding train or state of the ''guideway''. I am loathe to post a wikipedia link but this is about the only overview I know of (in German but you can wiki translate it) http://de.wikipedia.org/wiki/Linienzugbeeinflussung Absolutely, the LZB is /very/ impressive. I'm sure the Munich system couldn't work as it does without it. Trains close up to about 20 or 30 metres separation; if a train is stationary in the platform you can see the front of the next one just inside the tunnel. When a train restarts the next train can be entering a platform before the rear of the previous one has cleared it. It's even better if you stand behind the driver and look over his/her shoulder... The first time I did it I flinched - the train in front is so close it /can't/ be right! AFAIW such grandiose signalling systems do not form part of Thameslink Program ... it will retain conventional trackside aspects with TPWS and AWS. ISTR Roger Ford referred to this in MR a couple of years back (although things might have moved since then). A pity, when you consider that Munich, a city of 1.3m inhabitants, with probably as many again living within 20 miles or so, gets a grown-up railway while London, the powerhouse of the country with over 10m, gets a cobbled together Hornby set. If I thought Thameslink was getting LZB then I'd not have made the remarks I did. BTW ... the Jubilee (and Northern, Piccadilly) line signals upgrade is to LZB ... Seltrac S40 is an LZB ... it even says LZB on the processor cabinets/ Then there is hope for us yet! -- Robert |
Visible signs of Thameslink 2000
On Nov 8, 2:33 pm, Robert wrote:
It's a bit more complicated than that. I think that you will find that the Stammstrecke is defined as the section from Pasing to Munich-Ostbahnhof, a distance of marginally over 7 miles; it is not just the central tunnel section. Where did I say it was the tunnel section ? I never used the word tunnel. I said core ... and I know Stamssstrecke is Pasing - Ost. However, I did err in that the two track section is as you say Ost - Donnerburgerbrucke. I had the latter station in my minds eye. signals upgrade is to LZB ... Seltrac S40 is an LZB ... Then there is hope for us yet! There had better be ... ;o) -- Nick |
Visible signs of Thameslink 2000
"Mr Thant" wrote in message ... On 7 Nov, 18:46, D7666 wrote: AFAIW such grandiose signalling systems do not form part of Thameslink Program ... it will retain conventional trackside aspects with TPWS and AWS. ISTR Roger Ford referred to this in MR a couple of years back (although things might have moved since then). ATO of some form in the central section is in the spec for the new trains. They're also meant to have three doors per side. (And Crossrail is also meant to have ATO, while we're on the subject) Where are you getting that new info about the doors? Sounds highly sensible, but the DfT's Thameslink EMU spec on their website mentions (para 11.3) 16 doors per 162m (8 car) train... http://www.dft.gov.uk/pgr/rail/pi/th...levespecif.pdf Paul S |
Visible signs of Thameslink 2000
On Nov 8, 3:10 am, D7666 wrote:
On Nov 8, 1:26 am, Mr Thant wrote: ATO of some form in the central section is in the spec for the new trains. http://www.dft.gov.uk/pgr/rail/pi/th...levespecif.pdf 8.3 Does not state the trains will be ATO fitted. It merely states that trains controls layout and systems to be designed around an ATO system i.e. leave space for it. -- Nick |
Visible signs of Thameslink 2000
In uk.transport.london message 9cccdf44-e251-4388-8dfe-403e65407bc8@i20
g2000prf.googlegroups.com, Fri, 7 Nov 2008 15:46:29, D7666 posted: I am loathe to post a wikipedia link but this is about the only overview I know of (in German but you can wiki translate it) http://de.wikipedia.org/wiki/Linienzugbeeinflussung Wiki translate? where's that? Wikipedia does have half a dozen articles on the subject, but they are not necessarily direct translations. -- (c) John Stockton, nr London, UK. Turnpike v6.05 MIME. Web URL:http://www.merlyn.demon.co.uk/ - FAQish topics, acronyms, & links. Food expiry ambiguities: URL:http://www.merlyn.demon.co.uk/date2k-3.htm#Food |
Visible signs of Thameslink 2000
On 2008-11-08 15:35:26 +0000, D7666 said:
On Nov 8, 2:33 pm, Robert wrote: It's a bit more complicated than that. I think that you will find that the Stammstrecke is defined as the section from Pasing to Munich-Ostbahnhof, a distance of marginally over 7 miles; it is not just the central tunnel section. Where did I say it was the tunnel section ? I never used the word tunnel. I said core ... and I know Stamssstrecke is Pasing - Ost. However, I did err in that the two track section is as you say Ost - Donnerburgerbrucke. I had the latter station in my minds eye. What was confusing me was that you wrote Nowhere on the Mch S-bahn stammstrecke (the core section) are there junctions of any sort on the twin track core - only at the ends. My argument was that the Stammstrecke is 2 track all the way from Pasing to the Ostbahnhof (we agree) but in that length it /does/ have two grade separated junctions, at Laim and Donnersbergerbrücke. There is also the junction at Ostbahnhof where lines S5 and S6 reverse. We also agree that both Pasing and the Ostbahnhof have 4 dedicated platforms to be able to launch and accept trains at the required frequency. Agreed that Donnersbergerbrücke has 4 platforms but 2 of them are used by the BOB trains that tunnel in from the south, stop at the station and then fly over the S-Bahn tracks to get access to the surface level Hbf. The S7 S-Bahn trains to and from the tunnel section use the BOB lines from the south, the BOB platforms and join and leave the Stammstrecke at the east end of the platforms. However arcane the details, the point is that a 28/30 tph service can be operated on a two track route with junctions if the system as a whole is well designed. For example note that where trains /join/ the Stammstrecke they do so at stations which have island platforms so station work on trains from different routes can be overlapped so as little time is lost as possible. Apart from the possible savings in capital cost I can't understand why at least the /southbound/ platform at St. Pancras Low Level was not built as an island. Why design into a system which uses very expensive infrastructure a bottleneck which prevents it being used as intensively as possible? In the long term it is a waste of resources, both of the passengers' time (by offering a less frequent service than could be done) and money. signals upgrade is to LZB ... Seltrac S40 is an LZB ... Then there is hope for us yet! There had better be ... ;o) -- Robert |
Visible signs of Thameslink 2000
On Nov 9, 3:53 pm, Robert wrote:
capital cost I can't understand why at least the /southbound/ platform at St. Pancras Low Level was not built as an island. It was designed that once, both platforms were. before the decision to move Eurostar to StPancras, under the complete separate TL2000 program what is now SPILL would have been a bit to the south/east of SPILL and of 2 island platforms. With TL2000 appearing to be going nowhere at the time, a creeping erosion decision was made i.e. one of several decisions that slowly erodes possibilites in other projects - and cut the KXTL replacement from 4 to 2 platforms.. prevents it being used as intensively as possible? In the long term it is a waste of resources, Indeed. That was what was wrong with the SPI rebuilding ... it was done for itself, a grandiose scheme that has left both what are now EMT and FCC with admittedly new stations but only just about enough to run today but no room for serious expansion for tomorrow. -- Nick |
Visible signs of Thameslink 2000
On 2008-11-09 21:30:43 +0000, D7666 said:
On Nov 9, 3:53 pm, Robert wrote: capital cost I can't understand why at least the /southbound/ platform at St. Pancras Low Level was not built as an island. It was designed that once, both platforms were. before the decision to move Eurostar to StPancras, under the complete separate TL2000 program what is now SPILL would have been a bit to the south/east of SPILL and of 2 island platforms. With TL2000 appearing to be going nowhere at the time, a creeping erosion decision was made i.e. one of several decisions that slowly erodes possibilites in other projects - and cut the KXTL replacement from 4 to 2 platforms.. prevents it being used as intensively as possible? In the long term it is a waste of resources, Indeed. That was what was wrong with the SPI rebuilding ... it was done for itself, a grandiose scheme that has left both what are now EMT and FCC with admittedly new stations but only just about enough to run today but no room for serious expansion for tomorrow. Thank you for the explanation. One can only sigh and mutter 'What a pity'. -- Robert |
Visible signs of Thameslink 2000
On Nov 8, 4:48 pm, "Paul Scott"
wrote: Where are you getting that new info about the doors? Sounds highly sensible, 3 doors per side sensible only if TL Program were purely an inner suburban metro style upgrade. But it is not. For good or bad, it is a combined inner and outer suburban and main line operation ... and 3 doors per side would eat too far into seating for longer distance journeys especially if the units have luggage racks for airport baggage. -- Nick |
Visible signs of Thameslink 2000
On Nov 8, 8:02 pm, Dr J R Stockton wrote:
http://de.wikipedia.org/wiki/Linienzugbeeinflussung Wiki translate? where's that? Wikipedia does have half a dozen articles on the subject, but they are not necessarily direct translations. Hhhmmm .... ..... I thought wikipedia had a direct translate button. Of course google could do it, but what i was thinking of was a simple click and it did the whole page for you within wiki. Must have dreamt that. Sorry. -- Nick |
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