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Post by Deleted on May 29, 2015 17:16:57 GMT
Never knew that was possible. They should do that when it's windy/raining/snowing. S Stock have 3 settings for door operation; 'operator'; 'both'; 'passenger'. T/Ops are currently required to operate trains in 'operator' mode only. Does the 'operator' mode still have the doors closing automatically after a set period of time, with passenger operation then possible until the operator closes the doors? Or is that only done in 'both'? |
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Post by Dstock7080 on May 29, 2015 17:42:33 GMT
Does the 'operator' mode still have the doors closing automatically after a set period of time, with passenger operation then possible until the operator closes the doors? Or is that only done in 'both'? Yes, doors will still 'auto-close' after 45 seconds. The doors nearest the wheelchair spaces will not auto-close if the magic eye has been interrupted and the timer will restart. At some stations, the auto-close function is disabled by the station beacon, to assist longer dwell times at busy station. |
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Post by Deleted on May 29, 2015 18:10:00 GMT
From my understanding (about 1 min of it) operator is like every other train on the tube, both is all doors open then close after 45 seconds and passenger is the same as the DLR but still closes after 45 seconds.
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Post by domh245 on May 29, 2015 18:43:13 GMT
Sticking with the theme of doors, can anyone tell me why Putney Bridge Westbound seems to throw up the door fault where they all open out of sync more often than others?
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Post by Deleted on May 29, 2015 19:05:49 GMT
From my understanding (about 1 min of it) operator is like every other train on the tube, both is all doors open then close after 45 seconds and passenger is the same as the DLR but still closes after 45 seconds. Since when do DLR doors close after 45 seconds? |
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Post by Deleted on May 29, 2015 19:17:51 GMT
What I meant was passengers had to press the button to open the door (like the DLR) but close after 45 seconds (unlike the DLR)
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Post by uzairjubilee on May 30, 2015 11:22:02 GMT
Sticking with the theme of doors, can anyone tell me why Putney Bridge Westbound seems to throw up the door fault where they all open out of sync more often than others? Thank God someone else has also witnessed this! I'm sure Dstock7080 will be able to answer. |
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Post by Dstock7080 on May 30, 2015 14:19:49 GMT
Thank God someone else has also witnessed this! I'm sure Dstock7080 will be able to answer. Actually i can't! Yes, it does happen at Putney Bridge WB for no explained reason. |
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Post by wimblephil on May 30, 2015 14:46:03 GMT
Surely someone has to look into that, if not just to satisfy the intrigue!
Could it have anything to do with the curvature of the platform? Are there (m)any other platforms with a similar curvature? Is the synchronisation effected at any of these?
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Post by t697 on May 30, 2015 15:49:15 GMT
Sticking with the theme of doors, can anyone tell me why Putney Bridge Westbound seems to throw up the door fault where they all open out of sync more often than others? At Putney Bridge WB, there is no conductor rail at the position where the rear Driving Motor car stops. So only one of the train's auxiliary power supply converters will run. I'm pretty sure that in this condition, the door motors are deliberately not synchronised, so as to reduce the peak auxiliary power load when the doors open. |
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Post by uzairjubilee on May 31, 2015 11:11:27 GMT
Sticking with the theme of doors, can anyone tell me why Putney Bridge Westbound seems to throw up the door fault where they all open out of sync more often than others? At Putney Bridge WB, there is no conductor rail at the position where the rear Driving Motor car stops. So only one of the train's auxiliary power supply converters will run. I'm pretty sure that in this condition, the door motors are deliberately not synchronised, so as to reduce the peak auxiliary power load when the doors open. So that probably explains why the front door opens about a second after all the other doors? |
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Post by t697 on Jun 1, 2015 17:11:49 GMT
Checked up and it is as I stated. No great secret since you can confirm by observation, on the front car the middle doorway is not delayed, the trailing doorway delayed 0.5 second and the leading doorway 1.0 second. Same pattern down to the first MS car (the first wheelchair space car), then the other way round for the rest of the train. This delaying is done by the non-vital TCMS control.
Fortunately there are very few platforms where this feature normally happens.
So for Putney Bridge WB, if you really must be first off the train, it's the car's middle doorway you need to hog. But whatever, Mind the Gap!
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Post by wimblephil on Jun 3, 2015 17:56:58 GMT
Why is it that they still close simultaneously? Does that not require the same power?
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Post by Dstock7080 on Jun 4, 2015 15:00:35 GMT
With the delivery back to Neasden this morning of S8 21099/100 sees the end of this round of engineering work-backs to Bombardier Derby, started early in 2013.
The Metropolitan now has a full compliment of S8 Stock, the first time since late-2012.
The first temporary S7+1 train has also now returned to Derby, for conversion back to a standard S7 and to donate its extra car to the correct train.
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Post by Deleted on Jun 4, 2015 19:10:54 GMT
The first temporary S7+1 train has also now returned to Derby, for conversion back to a standard S7 and to donate its extra car to the correct train. I'm surprised this had to be done at Derby. Can the trains not be split up in London? Or did this one go back simply so that its eighth carriage could be reunited with its fellows? Even so, could the six cars not have been delivered to London to be made up? |
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Post by domh245 on Jun 4, 2015 19:53:28 GMT
I'm guessing that the S7+1s could have been split in Neasden, the S7-1s delivered as such and then reconfigured in Neasden (or Ealing Common/Upminster as a test I suppose) but I imagine that there is something else that only Bombardier were able to do - something to do with sanding equipment perhaps? There has got to be something that differentiates the S7s and S8s that can only be fixed in Derby.
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Post by Chris M on Jun 4, 2015 20:04:23 GMT
It wouldn't surprise me if there were also warranty issues involved here. Bombardier not giving the train a warranty unless it was configured by them sort of thing.
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Post by philthetube on Jun 4, 2015 20:49:38 GMT
They may also have to go back, as many of their brothers and sisters did, for upgrades.
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Post by t697 on Jun 5, 2015 17:17:11 GMT
Why is it that they still close simultaneously? Does that not require the same power? Apparently the peak power on closing is less than on opening because the door speed profile is gentler, also the start of the close cycle does not involve releasing the door locks like the open cycle does. |
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Post by wimblephil on Jun 5, 2015 18:29:46 GMT
Why is it that they still close simultaneously? Does that not require the same power? Apparently the peak power on closing is less than on opening because the door speed profile is gentler, also the start of the close cycle does not involve releasing the door locks like the open cycle does. Ah I see. That makes sense I guess, so there's not so much a spike as there is upon opening |
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Post by Deleted on Jun 5, 2015 18:54:27 GMT
That may also explain why the lights on the outside of the train that come on if a door is open (don't know their name) go off at different times.
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Post by Dstock7080 on Jun 5, 2015 19:21:20 GMT
the lights on the outside of the train that come on if a door is open (don't know their name) Outside Door Indicator, lights. |
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Post by Deleted on Jun 6, 2015 0:08:02 GMT
How many s stock are running vs D78 now? Today there seemed to be only s stock all day.
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Post by uzairjubilee on Jun 6, 2015 11:37:45 GMT
How many s stock are running vs D78 now? Today there seemed to be only s stock all day. Vast majority is still D Stock I would say. |
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Post by superteacher on Jun 6, 2015 13:23:06 GMT
Only 10 regular S stock workings vs 65 or so D stock. Not for long though - by this time next year, those numbers will be reversed.
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Post by Deleted on Jun 7, 2015 20:12:18 GMT
To my surprise for my journey in from Upminster Bridge this morning (Sunday) at around 08.50 the service was an S7. The first one I have had into London.
John
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Post by Deleted on Jun 8, 2015 17:04:57 GMT
Only 10 regular S stock workings vs 65 or so D stock. Not for long though - by this time next year, those numbers will be reversed. Up to 11 as of today with T47 joining the nominated workings. 12th train to follow by end of June. |
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Post by Deleted on Jun 15, 2015 21:18:06 GMT
Two more S stocks in service from today on T55 and T60 which brings the number up to 13.
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Post by graeme186 on Jun 22, 2015 20:44:45 GMT
21461 in Wembley Park Sidings this evening which is an indicator that it will enter passenger service first thing tomorrow morning.
Separately, 21099 and 21115 both now back in passenger service as has been reported elsewhere. 21323 still in service on the Met today.
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Post by Deleted on Jun 24, 2015 1:43:56 GMT
Things are moving on in the S stock front on the District. I just did my first full S stock duty today.
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