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Post by will on Oct 15, 2015 12:19:03 GMT
What has caused the recent deterioration of the Central line trains? Seemingly over the last few weeks there has been a lack of available trains and service frequencies have suffered. What is the cause of this ? thanks Will  |
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towerman
My status is now now widower
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Post by towerman on Oct 16, 2015 11:55:39 GMT
Have they started withdrawing stock for conversion to AC motors?
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Post by domh245 on Oct 16, 2015 12:09:31 GMT
Was that happening? I knew it was going to be done with the SWT 455s indeed the first 2 have had their old DC equipment removed and replaces, but I hadn't heard of a similar plan for the 92s. There are probably quite a few things that could be improved reliability wise before getting to traction equipment
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Deleted
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Post by Deleted on Oct 16, 2015 14:22:26 GMT
There was a work order out a while ago looking for suppliers of a new AC traction kit for the 92TS, so I imagine its going ahead.
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Post by nickf on Oct 16, 2015 14:31:52 GMT
What has caused the recent deterioration of the Central line trains? Seemingly over the last few weeks there has been a lack of available trains and service frequencies have suffered. What is the cause of this ? thanks Will The second bit of Auxy's blog Click Here provides some information on the subject. |
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Post by A60stock on Oct 17, 2015 14:48:24 GMT
Will the door closing and opening sounds be changed to a more modern sounding one? Or at least change one to distinguish them apart?
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Post by superteacher on Oct 17, 2015 15:24:07 GMT
Will the door closing and opening sounds be changed to a more modern sounding one? Or at least change one to distinguish them apart? What is wrong with the current ones? |
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Deleted
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Post by Deleted on Oct 17, 2015 19:36:54 GMT
Was the 1992 tube stock the first to be made in the Far East?? It seems like it..
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Deleted
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Post by Deleted on Oct 17, 2015 19:57:54 GMT
The 1992 stock were built in Derby. By 1992, the plant was in the hands of ABB, who took over from BREL. It's ABB who are given as the manufacturers by squarewheels. From ABB, the plant passed into the ownership of Adtranz and it is now, of course, owned by Bombardier, who are responsible for some of the other new stock on London Underground. |
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North End
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Post by North End on Oct 17, 2015 21:20:08 GMT
Was the 1992 tube stock the first to be made in the Far East?? It seems like it.. It's not so much the quality of the build, more that the stock was unfortunate to be designed and built at a time of rapid change in rolling stock design. This meant they were pioneers in many respects - both in terms of their construction and also more importantly the technology. The drawback of this is that firstly they didn't have the benefit of past experience which made them more prone to issues, and then during a period of rapidly advancing technology they were obsolete before they even entered service, which over time has led to issues with obsolete components. By comparison, the 95 and 96 stocks have been much better performers - especially the 95 stock. The 96 stock also had outdated traction equipment, but still much more modern technology compared to 92 stock. Meanwhile the 95 stock traction package was conceived at a time when technological progress had settled down, such that the 95 stock traction package is not radically different to trains being built today. It's also worth adding that the Central Line is a demanding line, particularly compared to any of the sub-surface lines, long runs and sustained high-speed running, mixed with an intensive service through the centre of town. All this is unfortunate as, personally, I quite like the 92 stock -- however it has to be said the 95 and 96 stocks are much better trains in virtually every respect, despite only being a few years younger. |
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Post by superteacher on Oct 18, 2015 13:46:30 GMT
Was the 1992 tube stock the first to be made in the Far East?? It seems like it.. It's not so much the quality of the build, more that the stock was unfortunate to be designed and built at a time of rapid change in rolling stock design. This meant they were pioneers in many respects - both in terms of their construction and also more importantly the technology. The drawback of this is that firstly they didn't have the benefit of past experience which made them more prone to issues, and then during a period of rapidly advancing technology they were obsolete before they even entered service, which over time has led to issues with obsolete components. By comparison, the 95 and 96 stocks have been much better performers - especially the 95 stock. The 96 stock also had outdated traction equipment, but still much more modern technology compared to 92 stock. Meanwhile the 95 stock traction package was conceived at a time when technological progress had settled down, such that the 95 stock traction package is not radically different to trains being built today. It's also worth adding that the Central Line is a demanding line, particularly compared to any of the sub-surface lines, long runs and sustained high-speed running, mixed with an intensive service through the centre of town. All this is unfortunate as, personally, I quite like the 92 stock -- however it has to be said the 95 and 96 stocks are much better trains in virtually every respect, despite only being a few years younger. I agree, but let's face it, the build quality wasn't great either. Even after a few short years, they were showing signs of deterioration. But Imalso like them. When they were introduced, they were very different to anything that went before, much like the 1938 stock when they were first introduced. |
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Post by stapler on Oct 18, 2015 13:57:28 GMT
High-speed running? Isn't the stock still limited to 62mph?
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Post by superteacher on Oct 18, 2015 14:00:26 GMT
High-speed running? Isn't the stock still limited to 62mph? 62 mph running hasn't been permitted for a long time. It's now nearer 52 mph (85 kph). They were doing some trials regarding increasing the speed back to 100 kph, but I'm not sure what became of that. |
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hobbayne
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Post by hobbayne on Oct 18, 2015 15:17:40 GMT
High-speed running? Isn't the stock still limited to 62mph? 62 mph running hasn't been permitted for a long time. It's now nearer 52 mph (85 kph). They were doing some trials regarding increasing the speed back to 100 kph, but I'm not sure what became of that. It came to nothing and was abandoned. |
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Post by superteacher on Oct 18, 2015 15:36:41 GMT
62 mph running hasn't been permitted for a long time. It's now nearer 52 mph (85 kph). They were doing some trials regarding increasing the speed back to 100 kph, but I'm not sure what became of that. It came to nothing and was abandoned. What were the reasons for this? |
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Deleted
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Post by Deleted on Oct 18, 2015 18:31:42 GMT
Glad it never happened, being on one driven in Coded Manual last year with a keen Driver wanting to go home, reminded me of the old days when the extreme hunting of the bogies made so much noise you had to shout to try and talk to eachother!
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Post by superteacher on Oct 18, 2015 19:04:13 GMT
Glad it never happened, being on one driven in Coded Manual last year with a keen Driver wanting to go home, reminded me of the old days when the extreme hunting of the bogies made so much noise you had to shout to try and talk to eachother! Sounds like fun to me! I remember the extreme rattling too. |
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Post by will on Oct 18, 2015 20:04:45 GMT
You would think they would trial 100KPH running again considering the unavailability of stock as that would allow them to get trains from one end of the line to the other quicker to increase/maintain service frequencies and cut journey times?
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Post by Chris W on Oct 18, 2015 20:17:34 GMT
The New Tube for London... is due to come into service around 2025...
Rattle the 92ts up to 100kph and your likely to rattle them to bits long before we get to 2025.
IMO they'll be the first of the Bakerloo, Central, Piccadilly or the Waterloo/City lines to be replaced  |
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Post by stapler on Oct 18, 2015 20:59:26 GMT
Is there anything physically/electronically to stop a driver in manual exceeding the 52mph? I could swear that on Saturdays particularly speeds seem up to 60 north of Woodford Jc!
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Post by norbitonflyer on Oct 18, 2015 21:05:51 GMT
Rattle the 92ts up to 100kph and your likely to rattle them to bits long before we get to 2025. IMO they'll be the first of the Bakerloo, Central, Piccadilly or the Waterloo/City lines to be replaced 100kph on the Drain would be interesting! |
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Post by Chris W on Oct 18, 2015 21:08:11 GMT
100kph on the Drain would be interesting! Often in the past 10kph would be a joy for passengers  |
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Deleted
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Post by Deleted on Oct 18, 2015 21:08:14 GMT
Is there anything physically/electronically to stop a driver in manual exceeding the 52mph? I could swear that on Saturdays particularly speeds seem up to 60 north of Woodford Jc! No, not the last I heard, anyway. Auto will not exceed 85 kph following a software change a long time back, but the target speed can still reach 100 kph and the ATP will allow the train to get up there. However, drivers are not allowed to drive at these speeds and anyone found to have exceeded 85 kph (plus a little bit of leeway, obviously), will be in trouble. Given how unwise it would be to attempt it, I doubt very much drivers are reaching 60. Recall these trains don't offer mind numbingly smooth rides and then there's the condition of the road to consider. |
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rincew1nd
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Post by rincew1nd on Oct 18, 2015 21:18:36 GMT
Odd that the target speed can be higher than the unit's maximum speed, but then I suppose this is just the same as taking a Pacer on the West Coast Main Line; just because the line speed is 100mph doesn't meant it should (or indeed, could) do more than 60mph.
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Deleted
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Post by Deleted on Oct 18, 2015 21:42:27 GMT
Glad it never happened, being on one driven in Coded Manual last year with a keen Driver wanting to go home, reminded me of the old days when the extreme hunting of the bogies made so much noise you had to shout to try and talk to eachother! Sounds like fun to me! I remember the extreme rattling too. Fun every now and again but not everyday! |
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hobbayne
RIP John Lennon and George Harrison
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Post by hobbayne on Oct 20, 2015 12:39:52 GMT
It was thrown out after it was deemed unfeasible.
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