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Post by jardine01 on Sept 18, 2011 10:54:47 GMT
The other day at Totteham court road the train departed from the platform and moved off then just coasted all the way out of the platform at a snails pace. The signal was green also the train was not that busy exept one of the carriages. If somebody was leaning against the doors the train would of came to a halt. Unless there was some sort of ATO failure and the train was put into RM to the next station?
Check the video of this on Youtube
Type in Central line departing Totteham court road
it is the second video down.
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Post by alfie on Sept 18, 2011 11:04:33 GMT
If he got the Pilot (leaning on doors) the train would just coast like that. Looks like he made a PA to the offending passenger and then got going properly.
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Post by jardine01 on Sept 18, 2011 11:12:22 GMT
Maybe but the train sped up a little but should of got more speed up than that. This sort of occurance happens too much. maybe there should be signs on the doors saying "please do not lean against the doors"
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Post by alfie on Sept 18, 2011 11:14:17 GMT
There are! (sort of) 'Obstructing the doors causes delays'
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Post by chrisvandenkieboom on Sept 18, 2011 11:15:56 GMT
There are! (sort of) 'Obstructing the doors causes delays' It's actually 'Left behind bags cause delays' and 'Obstructing the doors can be dangerous', I think. |
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Post by alfie on Sept 18, 2011 12:25:07 GMT
Hush. I knew that  |
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Post by chrisvandenkieboom on Sept 18, 2011 12:37:31 GMT
*muffled* xD
Anyway, here's a list of moments in the video where people lean on the doors, who could be the culprit.
00:24, 2 people.
00:30, 1 person.
00:50, (maybe) 1 person
00:54, multiple people
00:57, multiple people
01:00, multiple people
More doors are leaned against, this is just a few... Anyway; odd.
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Post by Deleted on Sept 18, 2011 12:52:19 GMT
I've had the same experiences. MIE to BEG a few weeks ago, had about 7 seconds of acceleration and then the train coasted all the way to BEG. It obviously sped up a little going down hill and then slowed down approaching the station. Then as the train entered the station, classic ATO speed up till about halfway down the station and then stopped normally.
Sounded like it was with the ATO, normal clunking from behind the bulkhead no tbc movement sounds and the train never stopped to change into RM. There weren't too many people on the train so don't think it was just someone leaning on the doors for the whole run.
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Post by plasmid on Sept 18, 2011 16:39:06 GMT
It's entirely up to the driver whether if he wishes for the train to coast to a complete stop before applying the brakes and resuming in ATO or whether if he applies an emergency brake and then continues in ATO.
If this happens at Stratford Eastbound the driver normally allows the train to roll down the gradient and applies the brakes when the train rolls to a stop just outside of Leyton. Then resumes in ATO.
In another instance I've experienced the driver will announce that the train will perform an emergency brake and then continue in ATO.
In yet another instance I've walked down to a platform to find that a train had come to a halt but the first 3 cars had left the platform. I walked along the platform to the 4th car and found a dum dum with his bag caught in the door and he didn't realise. It was only until I banged on the door and shouted at him that he removed his bag, the driver got his Pilot light and the train proceeded. The station attendant just sat there doing nothing...which is a shame because most of them do their jobs properly and run to the affected car (with the light on) to check the doors.
Lazy or ill-trained?
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Post by jardine01 on Sept 18, 2011 16:42:36 GMT
Often when this happens the driver just got fed up with the train coasting and departed in CM to the next station .
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Post by Deleted on Sept 18, 2011 17:57:38 GMT
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Post by chrisvandenkieboom on Sept 18, 2011 18:21:17 GMT
Doors should make a very annoying noise when they're obstructed...
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Post by tecchy on Sept 18, 2011 18:33:46 GMT
Doors should make a very annoying noise when they're obstructed... Very true. they should!
Often when this happens the driver just got fed up with the train coasting and departed in CM to the next station .
He could still loose his pilot light in CM as well... |
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Post by jardine01 on Sept 18, 2011 19:05:21 GMT
But what genrally they do is pull away slightly slower than ATO in CM to try and stop the train from jolting.
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Post by tecchy on Sept 18, 2011 20:05:26 GMT
ATO is a faster acceleration than CM so you physically can't pull away faster. You still have to restroke in CM when the door closed visuals were lost and reappear anyway.
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Post by causton on Sept 18, 2011 20:23:58 GMT
ATO is a faster acceleration than CM so you physically can't pull away faster. You still have to restroke in CM when the door closed visuals were lost and reappear anyway. That's what he said - just some of the words were jumbled! A similar thing happened to me going from Shepherds Bush to Greenford one evening... whenever we left a station we would accelerate - bang! - coast - accelerate... the coasting lasted between 5 and 30 seconds every time. Happened at almost every station  |
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Post by jardine01 on Sept 19, 2011 5:52:11 GMT
I remember this would be last year now but I think this time it was a ATO failure we were half way out of the platform when the train jolted and came to a sudden stop. I could hear the driver saying something on the PA but it was too noisy in the carriage so i could not hear what he/she said. We were stopped for about 20 seconds then the train pull away every gradually then went back up to full speed.
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Post by jardine01 on Sept 19, 2011 15:02:47 GMT
This is not my video I have got the video from Youtube to here
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Post by jamesb on Sept 19, 2011 19:03:51 GMT
Is it a case that the springs (or whatever allows the doors to open slightly) have become more lax over time. The doors seem incredibly easy to come apart - on the on occasion I accidentally lent on a door as the train was decelerating.
How far would the door open? If there is a mechanism that only allows the door to open an inch or so, and then any more is impossible, do the motors need to cut out at all?
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SE13
In memoriam
RIP 23-Oct-2013
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Posts: 9,737
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Post by SE13 on Sept 20, 2011 11:06:02 GMT
It's air pressure that holds the doors closed, presumably with a lock during travel.
Think of a bus, there's always notices saying "In case of emergency, push" on the doors. It takes a bit of effort, but you can open them, you are up against the air pressure holding them closed. As it's a train, there would presumably be a secondary interlock - One for Tubeprune I think.
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Post by jamesb on Sept 20, 2011 11:34:24 GMT
I was just thinking that if the doors were held shut by air pressure, but there was a secondary interlock or something that allows them to be opened but only an inch or so, then the motors wouldn't need to be designed to cut out? You could free yourself, and it would be guaranteed no one would fall out the train.
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Post by Deleted on Sept 20, 2011 20:05:23 GMT
It's air pressure that holds the doors closed, presumably with a lock during travel. No lock as far as I know. I've been on 92, 95 and 96 stocks and with rapid acceleration and leaning on the door, the door has slid open nearly a foot. Don't know why pre 92 the doors all seem harder to open? |
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Post by jardine01 on Sept 21, 2011 6:10:42 GMT
Better build quality thats why!
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Post by Colin D on Sept 21, 2011 14:32:50 GMT
Think of a bus, there's always notices saying "In case of emergency, push" on the doors. It takes a bit of effort, but you can open them, you are up against the air pressure holding them closed. The buses I drive over here Orions, El Dorados and Novabus) I'm pretty sure need the air releasing before the doors can be opened. This is done by "IN EMERGENCY BRAKE GLASS AND TURN HANDLE TO OPEN DOOR" above the doors. |
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Post by tecchy on Sept 21, 2011 14:54:08 GMT
There is a lock on all the doors. Its an over centre lock via the door engine. The bit that you can push back is the spring arm. In a double set of doors (or in most/ every single sets) one of the doors has a spring which means you can open the door around 2-3 inches back (this measurement varies on different stocks) should you get your bag caught.
The motors will still cut out if the door is opened by the above.
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SE13
In memoriam
RIP 23-Oct-2013
Glorious Gooner
Posts: 9,737
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Post by SE13 on Sept 21, 2011 17:48:33 GMT
Think of a bus, there's always notices saying "In case of emergency, push" on the doors. It takes a bit of effort, but you can open them, you are up against the air pressure holding them closed. The buses I drive over here Orions, El Dorados and Novabus) I'm pretty sure need the air releasing before the doors can be opened. This is done by "IN EMERGENCY BRAKE GLASS AND TURN HANDLE TO OPEN DOOR" above the doors. Ah right, must be a bit different over there. Ours are just air pressure, some are harder than others, but all will shift with enough pressure to fully open. We do also have buttons above the doors to use, but only for emergencies by the public, or the drivers use them to keep people off the bus while setting up ticket machines, changeovers and the like. First thing in the morning when the air pressure has dropped, you could open them with a feather! Totally OT, but I did once park a bus up after a late turn in the washer, walked off and left the doors open. One of the night cleaners turned the wash on without checking.... Needless to say, the bus was out of action for a few days, and I got off scot-free. Anyhow, back on topic, thanks to tecchy for that, I thought there would have to be a lock of some sort. |
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