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Dangers of High Speed Trains Pushed from the Rear
The extent of the damage in the Berkshire crash was caused by two
major factors apart from the speed of the train and the limited view of the hero driver. These we 1/ the rear power car, still under full power, caused much of the crumpling and jack knifing, and 2/ the train would probably have remained upright if the points just further on hadn't completely derailed it. These two factors were not the fault of the suicidal car driver but rather Railtrack's and First Great Western's. Yet throughout the world we now have high speed passenger trains pushed from the *rear* by high powered engines. There will be more such crashes. SB |
Dangers of High Speed Trains Pushed from the Rear
On Wed, 10 Nov 2004 09:09:38 -0800, S.Byers wrote:
The extent of the damage in the Berkshire crash was caused by ... 1/ the rear power car, still under full power, FO back under your stone, troll. |
Dangers of High Speed Trains Pushed from the Rear
In article , S.Byers wrote:
Yet throughout the world we now have high speed passenger trains pushed from the *rear* by high powered engines. There will be more such crashes. So, we just get rid of rear engines, and all the problems will be solved? Presumably you'd like there to a single track from each possible destination to each other possible destination, thereby removing all those nasty dangerous points, too. If you're looking for someone to blame, blame the idiot in the car. The incident was his fault, not the railway companies'. Brian -- * * * * ** * * ** ** * * * ** * * ** * * * * * * * * * * |
Dangers of High Speed Trains Pushed from the Rear
"Brian Widdas" wrote in message ... In article , S.Byers wrote: Yet throughout the world we now have high speed passenger trains pushed from the *rear* by high powered engines. There will be more such crashes. So, we just get rid of rear engines, and all the problems will be solved? Please don't feed the trolls! |
Dangers of High Speed Trains Pushed from the Rear
"S.Byers" wrote in message
om... The extent of the damage in the Berkshire crash was caused by two major factors apart from the speed of the train and the limited view of the hero driver. These we 1/ the rear power car, still under full power, caused much of the crumpling and jack knifing, and 2/ the train would probably have remained upright if the points just further on hadn't completely derailed it. These two factors were not the fault of the suicidal car driver but rather Railtrack's and First Great Western's. Yet throughout the world we now have high speed passenger trains pushed from the *rear* by high powered engines. There will be more such crashes. Neither RT (should be Network Rail btw) or FGW had any hand in the design of the HST, as it came some 20 years before the existence of either! Secondly, the rear power car was NOT under the full power. The train's 'black box recorder' that the power notch was at zero and the brake handle was in 'emergency'. It was simply the inertia of the rear power car (which had already derailed) that kept it moving. Much of what you have posted is quite wrong. -- *** http://www.railwayscene.co.uk/ *** Rich Mackin (rich-at-richmackin-co-uk) MSN: richmackin-at-hotmail-dot-com |
Dangers of High Speed Trains Pushed from the Rear
S.Byers wrote:
The extent of the damage in the Berkshire crash was caused by two major factors apart from the speed of the train and the limited view of the hero driver. These we 1/ the rear power car, still under full power, caused much of the crumpling and jack knifing, and An emergency brake application causes the power to be cut. Additionally it is a natural reaction by an experinced driver to cut power as he applies the brakes. On an HST this is done by pushing both the power and brake handles forward to their fullest extent. |
Dangers of High Speed Trains Pushed from the Rear
yes i was just goin to say SHUT THE F UP mister.
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Dangers of High Speed Trains Pushed from the Rear
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Dangers of High Speed Trains Pushed from the Rear
"David Hansen" wrote in message
... Even if it was under full power the extra force that provided was not enough to cause the damage. If it was then HSTs would be damaged every time only the rear power car is working, which happens from time to time. The forces the power cars produce are minor compared to the forces involved in a crash. Quite. The maximum tractive effort is about 8 tons, which I guess (I don't have a power curve) would be only about a quarter of that at 100 mph. Compared to the momentum of its 70-ton weight at 100 mph, plus that of the other carriages at the rear, the effect of any power it could produce is negligible. Roger |
Dangers of High Speed Trains Pushed from the Rear
In message , A.Lee
writes On Wed, 10 Nov 2004 09:09:38 -0800, S.Byers wrote: The extent of the damage in the Berkshire crash was caused by ... 1/ the rear power car, still under full power, FO back under your stone, troll. I don't troll this N/G but I do remember working on British Railways when propelling was not allowed above 40mph. I expect I'll now get some egghead to troll me, but this was always the case when working tender first. (It also had the advantage of keeping the coal dust out of your eyes). -- Clive. |
Dangers of High Speed Trains Pushed from the Rear
In message ,
hector writes yes i was just goin to say SHUT THE F UP mister. What an intelligent reply, have you ever been a trainman? I thought not. -- Clive. |
Dangers of High Speed Trains Pushed from the Rear
In message , David Hansen
writes Even if it was under full power the extra force that provided was not enough to cause the damage. If it was then HSTs would be damaged every time only the rear power car is working, which happens from time to time. The forces the power cars produce are minor compared to the forces involved in a crash. I suspect the shape of the leading power car to have something to do with gathering up the car instead of just shunting it to the side. This is not a troll and unless you can add to the debate please don't respond. -- Clive. |
Dangers of High Speed Trains Pushed from the Rear
Clive Coleman schrieb:
I don't troll this N/G but I do remember working on British Railways when propelling was not allowed above 40mph. I expect I'll now get some egghead to troll me, but this was always the case when working tender first. I guess the tenders didn't like speeds similar to 100 mph while running first. However, they managed to order trains without tenders. Secondly, there was a power car in front of the train when it hit the obstacle. Regards, ULF |
Dangers of High Speed Trains Pushed from the Rear
"Clive Coleman" wrote in message ... In message , A.Lee writes On Wed, 10 Nov 2004 09:09:38 -0800, S.Byers wrote: The extent of the damage in the Berkshire crash was caused by ... 1/ the rear power car, still under full power, FO back under your stone, troll. I don't troll this N/G but I do remember working on British Railways when propelling was not allowed above 40mph. I expect I'll now get some egghead to troll me, but this was always the case when working tender first. (It also had the advantage of keeping the coal dust out of your eyes). -- Clive. Braking and power control not withstanding, a heavy weight at the rear of a train is not good news when it has to stop in a hurry, but a heavy weight at the front means a better chance of staying upright and, potentially, more protection for the guy at the sharp end. |
Dangers of High Speed Trains Pushed from the Rear
Rich Mackin wrote:
Neither RT (should be Network Rail btw) or FGW had any hand in the design of the HST, as it came some 20 years before the existence of either! Secondly, the rear power car was NOT under the full power. The train's 'black box recorder' that the power notch was at zero and the brake handle was in 'emergency'. It was simply the inertia of the rear power car (which had already derailed) that kept it moving. Much of what you have posted is quite wrong. It's Stephen Byers feeling arsey ;-) |
Dangers of High Speed Trains Pushed from the Rear
Clive Coleman wrote in message:
I don't troll this N/G but I do remember working on British Railways when propelling was not allowed above 40mph. I expect I'll now get some egghead to troll me, but this was always the case when working tender first. (It also had the advantage of keeping the coal dust out of your eyes). Generally 45mph now for tender engines working backwards (at least, in all the tender engines I've been in). However, do note that this was not due to the dange of derailment. It was due to poor visibilty. Do remember that push-pull services with tank engines existed for a long time during the big-four period and continued into BR days. These were not troubled with visibility problems, as the driver could control the engine from a suitable front coach - something which could be called the very first DVT, but better known as the auto-coach :) Ronnie -- Volunteer guard on the Great Central Railway, Loughborough, Leicestershire Visit the world's only double track preserved steam railway! http://www.gcrailway.co.uk |
Dangers of High Speed Trains Pushed from the Rear
S.Byers wrote: The extent of the damage in the Berkshire crash was caused by two major factors apart from the speed of the train and the limited view of the hero driver. These we 1/ the rear power car, still under full power, caused much of the crumpling and jack knifing, and The rear power car was not under full power. It was actually giving an emergency brake application. 2/ the train would probably have remained upright if the points just further on hadn't completely derailed it. Very true. It's about time all points were removed from the rail network to safeguard against idiot car-drivers. Ronnie -- Volunteer guard on the Great Central Railway, Loughborough, Leicestershire Visit the world's only double track preserved steam railway! http://www.gcrailway.co.uk |
Dangers of High Speed Trains Pushed from the Rear
In article , S.Byers
writes The extent of the damage in the Berkshire crash was caused by two major factors apart from the speed of the train and the limited view of the hero driver. These we 1/ the rear power car, still under full power, caused much of the crumpling and jack knifing, and 2/ the train would probably have remained upright if the points just further on hadn't completely derailed it. These two factors were not the fault of the suicidal car driver but rather Railtrack's and First Great Western's. Yet throughout the world we now have high speed passenger trains pushed from the *rear* by high powered engines. There will be more such crashes. SB I take it you want a return to the steam era But even then might have problems if no banking engine allowed on the Lickey etc. Do you also propose the end of DMU's and EMU's effectively all modern day trains How about banning 4x4 vehicles Front and rear axle powered. -- Alan Osborn |
Dangers of High Speed Trains Pushed from the Rear
In message , Ronnie Clark
writes These were not troubled with visibility problems, as the driver could control the engine from a suitable front coach - something which could be called the very first DVT, but better known as the auto-coach :) I have not forgotten the Yatton- Clevedon shuttle. -- Clive Coleman |
Dangers of High Speed Trains Pushed from the Rear
In message , dwb
writes econdly, the rear power car was NOT under the full power. The train's 'black box recorder' that the power notch was at zero and the brake handle was in 'emergency'. It was simply the inertia of the rear power car (which had already derailed) that kept it moving. Do you KNOW that? -- Clive Coleman |
Dangers of High Speed Trains Pushed from the Rear
Upon the miasma of midnight, a darkling spirit identified as S.Byers
gently breathed: The extent of the damage in the Berkshire crash was caused by two major factors apart from the speed of the train and the limited view of the hero driver. These we 1/ the rear power car, still under full power, caused much of the crumpling and jack knifing, and This is believed to be incorrect, but is in the interim HSE report which might explain why it got posted here. In reality, the power car of an HST weighs only the same as two coaches (70 tons vs 35 tons), so in reality it was the combined momentum of the whole train that caused the damage - as the HSE interim report does comment. Stopping 350 tons in such a short space requires the dissipation of a great deal of energy, and this is what caused the damage. -- - Pyromancer Stormshadow. http://www.inkubus-sukkubus.co.uk -- Pagan Gothic Rock! http://www.littlematchgirl.co.uk -- Electronic Metal! http://www.revival.stormshadow.com -- The Gothic Revival. |
Dangers of High Speed Trains Pushed from the Rear
Pyromancer wrote:
Upon the miasma of midnight, a darkling spirit identified as S.Byers gently breathed: The extent of the damage in the Berkshire crash was caused by two major factors apart from the speed of the train and the limited view of the hero driver. These we 1/ the rear power car, still under full power, caused much of the crumpling and jack knifing, and This is believed to be incorrect, but is in the interim HSE report which might explain why it got posted here. The unfounded idea that the rear power car was still under full power was certainly NOT in the interim HSE report. It was an ignorant rumour that I believe was mentioned first on Sky News a few hours after the crash. -- Richard J. (to e-mail me, swap uk and yon in address) |
Dangers of High Speed Trains Pushed from the Rear
"Alan Osborn" wrote in message
... snip Yet throughout the world we now have high speed passenger trains pushed from the *rear* by high powered engines. There will be more such crashes. another snip Do you also propose the end of DMU's and EMU's effectively all modern day trains How about banning 4x4 vehicles Front and rear axle powered. I think you're being harsh. The OP was referring to pushed trains, not push and pull. Will. |
Dangers of High Speed Trains Pushed from the Rear
Upon the miasma of midnight, a darkling spirit identified as Richard J.
gently breathed: The unfounded idea that the rear power car was still under full power was certainly NOT in the interim HSE report. It was an ignorant rumour that I believe was mentioned first on Sky News a few hours after the crash. Aha, yes, I missed that bit, was just referring to the "pushing momentum" idea. -- - Pyromancer Stormshadow. http://www.inkubus-sukkubus.co.uk -- Pagan Gothic Rock! http://www.littlematchgirl.co.uk -- Electronic Metal! http://www.revival.stormshadow.com -- The Gothic Revival. |
Dangers of High Speed Trains Pushed from the Rear
"Richard J." wrote in message . uk... Pyromancer wrote: Upon the miasma of midnight, a darkling spirit identified as S.Byers gently breathed: The extent of the damage in the Berkshire crash was caused by two major factors apart from the speed of the train and the limited view of the hero driver. These we 1/ the rear power car, still under full power, caused much of the crumpling and jack knifing, and This is believed to be incorrect, but is in the interim HSE report which might explain why it got posted here. The unfounded idea that the rear power car was still under full power was certainly NOT in the interim HSE report. It was an ignorant rumour that I believe was mentioned first on Sky News a few hours after the crash. -- I can see where this has come about. There is a BBC website report that states "The front of the First Great Western train ploughed into the embankment, while the rear power car on the train continued to propel the train forward, investigators found." What they have missed out is "momentum of", which is in the HSE report. Dave |
Dangers of High Speed Trains Pushed from the Rear
In article ,
Tim Christian wrote: "Clive Coleman" wrote in message ... In message , A.Lee writes On Wed, 10 Nov 2004 09:09:38 -0800, S.Byers wrote: The extent of the damage in the Berkshire crash was caused by ... 1/ the rear power car, still under full power, FO back under your stone, troll. I don't troll this N/G but I do remember working on British Railways when propelling was not allowed above 40mph. I expect I'll now get some egghead to troll me, but this was always the case when working tender first. (It also had the advantage of keeping the coal dust out of your eyes). -- Clive. Braking and power control not withstanding, a heavy weight at the rear of a train is not good news when it has to stop in a hurry, but a heavy weight at the front means a better chance of staying upright and, potentially, more protection for the guy at the sharp end. The momentum of one loco at the back is no different from three coaches at the back (approx). So its one coach trains only from now on ? David |
Dangers of High Speed Trains Pushed from the Rear
In article ,
Dave wrote: "Richard J." wrote in message . uk... Pyromancer wrote: Upon the miasma of midnight, a darkling spirit identified as S.Byers gently breathed: The extent of the damage in the Berkshire crash was caused by two major factors apart from the speed of the train and the limited view of the hero driver. These we 1/ the rear power car, still under full power, caused much of the crumpling and jack knifing, and This is believed to be incorrect, but is in the interim HSE report which might explain why it got posted here. The unfounded idea that the rear power car was still under full power was certainly NOT in the interim HSE report. It was an ignorant rumour that I believe was mentioned first on Sky News a few hours after the crash. -- I can see where this has come about. There is a BBC website report that states "The front of the First Great Western train ploughed into the embankment, while the rear power car on the train continued to propel the train forward, investigators found." What they have missed out is "momentum of", which is in the HSE report. ....and the investigators might have pointed out that the momentum of the rear eight coaches acting on the (derailed) leading power car was a lot greater than the momentum of the rear power car. David |
Dangers of High Speed Trains Pushed from the Rear
On Wed, 10 Nov 2004 21:08:02 -0000 someone who may be "Tim
Christian" wrote this:- Braking and power control not withstanding, a heavy weight at the rear of a train is not good news when it has to stop in a hurry, The "heavy weight" is equivalent to two or three coaches. Nobody worries about the effect in a crash if two or three coaches are added to a train. -- David Hansen, Edinburgh | PGP email preferred-key number F566DA0E I will always explain revoked keys, unless the UK government prevents me by using the RIP Act 2000. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
Dangers of High Speed Trains Pushed from the Rear
On Wed, 10 Nov 2004 20:39:08 +0000 someone who may be Clive Coleman
wrote this:- I suspect the shape of the leading power car to have something to do with gathering up the car instead of just shunting it to the side. As has been said before, the shape of the nose of the power car is simply fibreglass. Behind that fibreglass is essentially what one would find on the front of a locomotive, though without the buffers. -- David Hansen, Edinburgh | PGP email preferred-key number F566DA0E I will always explain revoked keys, unless the UK government prevents me by using the RIP Act 2000. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
Dangers of High Speed Trains Pushed from the Rear
On Wed, 10 Nov 2004 22:19:59 +0000 someone who may be Clive Coleman
wrote this:- econdly, the rear power car was NOT under the full power. The train's 'black box recorder' that the power notch was at zero and the brake handle was in 'emergency'. It was simply the inertia of the rear power car (which had already derailed) that kept it moving. Do you KNOW that? The Railway Inspectorate say so in their interim report. -- David Hansen, Edinburgh | PGP email preferred-key number F566DA0E I will always explain revoked keys, unless the UK government prevents me by using the RIP Act 2000. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
Dangers of High Speed Trains Pushed from the Rear
In article ,
David Hansen wrote: On Wed, 10 Nov 2004 20:39:08 +0000 someone who may be Clive Coleman wrote this:- I suspect the shape of the leading power car to have something to do with gathering up the car instead of just shunting it to the side. As has been said before, the shape of the nose of the power car is simply fibreglass. Behind that fibreglass is essentially what one would find on the front of a locomotive, though without the buffers. It does seem that most of the car wreckage was tossed aside very close to the point of impact on the crossing. But I guess that something (the engine perhaps ?) must have caught underneath and derailed the leading wheelset. David |
Dangers of High Speed Trains Pushed from the Rear
Clive Coleman wrote:
In message , dwb writes econdly, the rear power car was NOT under the full power. The train's 'black box recorder' that the power notch was at zero and the brake handle was in 'emergency'. It was simply the inertia of the rear power car (which had already derailed) that kept it moving. Do you KNOW that? Um... I didn't write that. ANyway, as David says, it's in the HSE report so I would guess it might be true. |
Dangers of High Speed Trains Pushed from the Rear
Ronnie Clark wrote:
Clive Coleman wrote in message: I don't troll this N/G but I do remember working on British Railways when propelling was not allowed above 40mph. I expect I'll now get some egghead to troll me, but this was always the case when working tender first. (It also had the advantage of keeping the coal dust out of your eyes). Generally 45mph now for tender engines working backwards (at least, in all the tender engines I've been in). However, do note that this was not due to the dange of derailment. It was due to poor visibilty. Do remember that push-pull services with tank engines existed for a long time during the big-four period and continued into BR days. These were not troubled with visibility problems, as the driver could control the engine from a suitable front coach - something which could be called the very first DVT, but better known as the auto-coach :) Not much of a van, though. More like the DBSO on Liverpool St - Norwich (not for too much longer). Robin |
Dangers of High Speed Trains Pushed from the Rear
Richard J. wrote:
The unfounded idea that the rear power car was still under full power was certainly NOT in the interim HSE report. It was an ignorant rumour that I believe was mentioned first on Sky News a few hours after the crash. Why would any sane person believe anything from the Murdoch organisation? Brian Rumary, England http://freespace.virgin.net/brian.rumary/homepage.htm |
Dangers of High Speed Trains Pushed from the Rear
Clive Coleman wrote to uk.transport.london on Wed, 10 Nov 2004:
I don't troll this N/G Which N/Gs do you troll, then? (Sorry, couldn't resist!) -- "Mrs Redboots" http://www.amsmyth.demon.co.uk/ Website updated 6 November 2004 with new photos |
Dangers of High Speed Trains Pushed from the Rear
David Hansen wrote:
Clive Coleman wrote: secondly, the rear power car was NOT under the full power. The train's 'black box recorder' that the power notch was at zero and the brake handle was in 'emergency'. It was simply the inertia of the rear power car (which had already derailed) that kept it moving. Do you KNOW that? The Railway Inspectorate say so in their interim report. Unless you are reading a different report than is available on the RI web site: - There is no mention of the power setting in the interim report. - There is no mention of the type of brake application, nor the position of the brake handle in the interim report, only that the brakes were applied 2 to 3 sections prior to impact. One can assume they were applied in emergency, but the report makes no statement on the subject, and it would be an assumption on the part of the reader. - There is no mention in the report of where the rear power car first derailed, (meaning the one at the London end of train) only that it was derailed where it came to rest. How do people get so many facts wrong, when the report is readily available? |
Dangers of High Speed Trains Pushed from the Rear
Tim Christian wrote:
Braking and power control not withstanding, a heavy weight at the rear of a train is not good news when it has to stop in a hurry, It makes absolutely no difference what the distribution of weight in the train is when stopping in a hurry. The suggestion that the locomotive in the rear is somehow a problem demonstrates a complete misunderstanding of the physics involved. The issue is the total mass of the train behind a derailed vehicle, which includes the mass of the coaches as well as the power car. That total mass is what creates the tendency to jackknife. The only way to avoid it is to run separate, individual vehicles, since there would then be nothing to push from behind. Individual vehicles are what run on highways. Trains run on tracks. but a heavy weight at the front means a better chance of staying upright and, potentially, more protection for the guy at the sharp end. That is true, since a heavy vehicle is more likely to remain on the rails, rather than be lifted up in a collision and derail. However, just because a vehicle is heavy doesn't necessarily mean that it offers more protection. I acknowledge that you said "potentially", since the weight can be from other things than extra strength applied to the front structure of the vehicle, which would provide the necessary protection. |
Dangers of High Speed Trains Pushed from the Rear
In message , James Robinson
writes That total mass is what creates the tendency to jackknife. The only way to avoid it is to run separate, individual vehicles, since there would then be nothing to push from behind. Individual vehicles are what run on highways. Trains run on tracks. Don't say that too loudly otherwise the media and safety mafia will be screaming for all real trains to be replaced by dogboxes! :-) -- Spyke Address is valid, but messages are treated as junk. The opinions I express do not necessarily reflect those of the educational institution from which I post. |
Dangers of High Speed Trains Pushed from the Rear
In message , Mrs Redboots
writes Clive Coleman wrote to uk.transport.london on Wed, 10 Nov 2004: I don't troll this N/G Which N/Gs do you troll, then? (Sorry, couldn't resist!) Uk.transport. -- Clive Coleman |
Dangers of High Speed Trains Pushed from the Rear
Roger H. Bennett wrote:
"David Hansen" wrote in message ... Even if it was under full power the extra force that provided was not enough to cause the damage. If it was then HSTs would be damaged every time only the rear power car is working, which happens from time to time. The forces the power cars produce are minor compared to the forces involved in a crash. Quite. The maximum tractive effort is about 8 tons, which I guess (I don't have a power curve) would be only about a quarter of that at 100 mph. Compared to the momentum of its 70-ton weight at 100 mph, plus that of the other carriages at the rear, the effect of any power it could produce is negligible. Roger Power was cut, full emergency brake was in and the power car at the rear provided much additional braking effort to the rear five coaches, which did not pile up onto the front three. The driver did everything right, call it self preservation, instinct, skill whatever, it is a testament to his last act and the construction of the train that so many survived. |
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