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Investigation under way after Tube train collision
On Mon, 12 May 2014 20:46:29 +0100, "Graham Harrison"
wrote: "Christopher A. Lee" wrote in message .. . On Mon, 12 May 2014 11:55:25 +0100, Roland Perry wrote: In message , at 03:18:36 on Mon, 12 May 2014, Christopher A. Lee remarked: http://www.bbc.co.uk/news/uk-england-london-27361455 What do they mean by "tracks moved"? Points set wrongly? Points moved under the train? Landlide moved the track? Gradual drift, I expect. Possibly - but with the intensive service, drivers must have noticed trains passing unusually closely a long time ago. Why? Given the intensive service drivers will have all sorts of shifts. The chance that the same driver will pass another train at that exact point often enough to think "here's a pattern" would surely be remote. Indeed, it wouldn't surprise me if depot staff have repaired a few scuffs which might now be put down to that track problem (but were they really?). Is the Wimbleware Service especially intensive? Of course it is entirely possible that the train operators' shifts include turns on other routes. The S7 stock is some of the widest to ever operate in the UK. When Network Rail, or their predecessors, has operated stock with new kinetic envelope characteristics they have been known to cobble together a gauging vehicle and move it over the intended routes taking measurements. Is it within TfL's wit to carry out such an exercise? -- http://www.dennismillerradio.com/ The DMZ. |
Investigation under way after Tube train collision
On Mon, 12 May 2014 21:38:23 -0700, Aurora wrote:
On Mon, 12 May 2014 20:46:29 +0100, "Graham Harrison" wrote: "Christopher A. Lee" wrote in message . .. On Mon, 12 May 2014 11:55:25 +0100, Roland Perry wrote: In message , at 03:18:36 on Mon, 12 May 2014, Christopher A. Lee remarked: http://www.bbc.co.uk/news/uk-england-london-27361455 What do they mean by "tracks moved"? Points set wrongly? Points moved under the train? Landlide moved the track? Gradual drift, I expect. Possibly - but with the intensive service, drivers must have noticed trains passing unusually closely a long time ago. Why? Given the intensive service drivers will have all sorts of shifts. The chance that the same driver will pass another train at that exact point often enough to think "here's a pattern" would surely be remote. Indeed, it wouldn't surprise me if depot staff have repaired a few scuffs which might now be put down to that track problem (but were they really?). Is the Wimbleware Service especially intensive? You'll probably get the correct answer somewhere in tfl.gov.uk but it does seem a bit leisurely at times even in the evening rush hour. Of course it is entirely possible that the train operators' shifts include turns on other routes. The S7 stock is some of the widest to ever operate in the UK. When Network Rail, or their predecessors, has operated stock with new kinetic envelope characteristics they have been known to cobble together a gauging vehicle and move it over the intended routes taking measurements. Is it within TfL's wit to carry out such an exercise? |
Investigation under way after Tube train collision
On Mon, 12 May 2014 21:38:23 -0700, Aurora wrote:
The S7 stock is some of the widest to ever operate in the UK. When Network Rail, or their predecessors, has operated stock with new kinetic envelope characteristics they have been known to cobble together a gauging vehicle and move it over the intended routes taking measurements. Is it within TfL's wit to carry out such an exercise? It's no wider than other LU surface stock apart from the C-stock. |
Investigation under way after Tube train collision
On Tue, 13 May 2014 02:28:12 -0500, Christopher A. Lee
wrote: On Mon, 12 May 2014 21:38:23 -0700, Aurora wrote: The S7 stock is some of the widest to ever operate in the UK. When Network Rail, or their predecessors, has operated stock with new kinetic envelope characteristics they have been known to cobble together a gauging vehicle and move it over the intended routes taking measurements. Is it within TfL's wit to carry out such an exercise? It's no wider than other LU surface stock apart from the C-stock. "D Stock is 9' 4" wide. "S Stock" is 9' 7" wide. While the "S Stock" is shorter, its kinetic envelope will be different. TfL have also had problems with the "gap" at some circle line platforms. As mentioned before, at least TfL know how to make a tube platform bright and cheeful. -- http://www.dennismillerradio.com/ The DMZ. |
Investigation under way after Tube train collision
On 13/05/2014 05:38, Aurora wrote: [...] The S7 stock is some of the widest to ever operate in the UK. When Network Rail, or their predecessors, has operated stock with new kinetic envelope characteristics they have been known to cobble together a gauging vehicle and move it over the intended routes taking measurements. Is it within TfL's wit to carry out such an exercise? I appreciate you consider the entire organisation to be grossly incompetent, but yes, LU did do gauging tests for the S7/S8 stock. |
Investigation under way after Tube train collision
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Investigation under way after Tube train collision
On Tue, 13 May 2014 17:06:59 +0100, Mizter T
wrote: On 13/05/2014 05:38, Aurora wrote: [...] The S7 stock is some of the widest to ever operate in the UK. When Network Rail, or their predecessors, has operated stock with new kinetic envelope characteristics they have been known to cobble together a gauging vehicle and move it over the intended routes taking measurements. Is it within TfL's wit to carry out such an exercise? It is always a mistake to presume to know another's thoughts, and this is no exception. I appreciate you consider the entire organisation No, I am not familiar with the entire organization, only those parts with which I interface. I knew a mainframe programmer who contracted for what was then LRT(London Regional Transport)? He was more than competent. And, clearly whoever nurture's TfL's corporate image does an excellent job. to be grossly One was tempted to counter grossly, and then I remembered the SSL resignalling. That has been one of TfL's many blunders. incompetent, but yes, LU did do gauging tests for the S7/S8 stock. Well that is good to hear. -- http://www.dennismillerradio.com/ The DMZ. |
Investigation under way after Tube train collision
On Tue, 13 May 2014 19:47:23 GMT, Anna Noyd-Dryver
wrote: Aurora wrote: Is the Wimbleware Service especially intensive? Of course it is entirely possible that the train operators' shifts include turns on other routes. Wimbleware is, to a certain extent, self-contrained; I went for a 'last ride' on C-stock a few months ago and got talking to the driver - he hadn't yet been trained on S-stock, so could only work the Wimbleware turns, at that time 4 trains of C-stock running daily. Thank you, there is nothing like first hand information. -- http://www.dennismillerradio.com/ The DMZ. |
Investigation under way after Tube train collision
On Tue, 13 May 2014 13:48:15 -0500,
wrote: In article , (Aurora) wrote: On Tue, 13 May 2014 02:28:12 -0500, Christopher A. Lee wrote: On Mon, 12 May 2014 21:38:23 -0700, Aurora wrote: The S7 stock is some of the widest to ever operate in the UK. When Network Rail, or their predecessors, has operated stock with new kinetic envelope characteristics they have been known to cobble together a gauging vehicle and move it over the intended routes taking measurements. Is it within TfL's wit to carry out such an exercise? It's no wider than other LU surface stock apart from the C-stock. "D Stock is 9' 4" wide. "S Stock" is 9' 7" wide. While the "S Stock" is shorter, its kinetic envelope will be different. TfL have also had problems with the "gap" at some circle line platforms. That's because of the lower S stock floor height surely? The width issue for D stock will be the car length and not just the width too. What is the C stock width? Much to my surprise C Stock is 9 ft 7 in wide. One lives and learns. As mentioned before, at least TfL know how to make a tube platform bright and cheeful. -- http://www.dennismillerradio.com/ The DMZ. |
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