solidbond
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Post by solidbond on Dec 23, 2005 19:16:16 GMT
Oooh - let's see - about 2 days ago  ;D ;D It's not that common, but earlier this week there were indeed 2 double-enders coupled together. I think I saw them on Tues and Weds. I've a feeling they have been uncoupled now though |
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Deleted
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Post by Deleted on Dec 24, 2005 23:44:39 GMT
I have always been told 2 Double ended units wont be run as a train due to length.
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solidbond
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Post by solidbond on Dec 25, 2005 0:31:04 GMT
The difference in length between a single end unit and a double end unit is about 10 inches. Thus a train consisting of 2 double end units is about 20 inches longer than one made up of 2 single end units. One of the main reasons that 2 double end units are not usually coupled together is that they are so useful for flexibility within the fleet, and that flexibility is lost if they are coupled together. (Not to mention the fact that if you are going to get any major problems with a D stock, it normally involves a double-end unit - so putting 2 together is just asking for trouble ;D ;D) |
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Deleted
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Post by Deleted on Dec 25, 2005 18:22:31 GMT
If you couple two double ended units of 73ts together, you can have some very un predicable results! Sometimes the train will be fine, but on other times it can play tricks with the round train circuit, and cause all sorts of problems. Dont ask me why!!
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Colin
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Post by Colin on Dec 26, 2005 20:15:23 GMT
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Post by Dstock7080 on Jan 12, 2006 23:15:08 GMT
Oooh - let's see - about 2 days ago ;D ;D It's not that common, but earlier this week there were indeed 2 double-enders coupled together. I think I saw them on Tues and Weds. I've a feeling they have been uncoupled now though And they are still around today! 7508+7529 as T127 in morning peak. |
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Deleted
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Post by Deleted on Jan 13, 2006 16:22:08 GMT
And they are still around today! 7508+7529 as T127 in morning peak. I had them today as train 22. IIRC the first time I've had two double enders together. |
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Post by Deleted on Jan 13, 2006 19:06:13 GMT
Saw two double enders together at Mile End yesterday, at about 1600.
Sam
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Post by Deleted on Jan 16, 2006 0:55:21 GMT
I've never had two double ended D stocks, nor even seen it !  Whilst more and more single ended units get refurbed, I guess, two double's forming a train was going to be inevitable sooner or later. I note the rules prevent a train being formed of one refurbished unit and one unrefurbished (even if they were compatible electronically).  |
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Post by trainopd78 on Jan 16, 2006 10:51:55 GMT
The only problem I have is that some of the platforms are a bit tight for 2 double enders being together. Sloane sq and Gloucester road w/b being 2 definates. I reckon Ravenscourt Pk is too short too, amongst others. When i've had it, I've covered my rear end by driving it with rear doors cut out. At least that way, no one can fall down a platform ramp and injure themselves accidentally on purpose. As we have no list of which platforms are too short to accept 2 double enders together, i've just made a self imposed blanket rule. |
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Colin
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Post by Colin on Jan 16, 2006 11:02:14 GMT
Surely it shouldn't be too much of an issue - as Solidbond says: The difference in length between a single end unit and a double end unit is about 10 inches. Thus a train consisting of 2 double end units is about 20 inches longer than one made up of 2 single end units. |
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Post by Dstock7080 on Jan 16, 2006 19:42:55 GMT
Surely it shouldn't be too much of an issue - as Solidbond says: The difference in length between a single end unit and a double end unit is about 10 inches. Thus a train consisting of 2 double end units is about 20 inches longer than one made up of 2 single end units. Well, regarding when I had them (7508+7529) on 12Jan as T127, reversing in HSK pfm3 was a bit awkward. As no matter how close to the stop lights you got, the back end was well past the monitor position- (the monitors here are slab-side on to the cab window). When the first D Stock deliveries were made, they all came as 'double-bubbles', until the single-ended units arrived later. So, the first trains into service were all 2xdouble-enders. This didn't seem to matter in the days of guards at the very rear of the trains and no precise stopping required at most stations. Obviously now with mirrors/monitors hindering things, it's a different matter. |
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Post by tom2506 on Jan 16, 2006 20:03:31 GMT
When there were gaurds, were the stopping marks a little less strict?
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Deleted
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Post by Deleted on Jan 16, 2006 20:16:20 GMT
I'd imagine so yep - since you didn't have to line up with monitors and there were no CSDE loops to faff around with!
Sam
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Post by doubletrigger on Jan 16, 2006 20:58:17 GMT
Well they should build the new 'S'stock to be no longer than the shortest south circle platform [Gloucester road] in length. that will save all the kerfizzle of cutting out doors won't it. Depends! Computers can be set up to cut out automatically at each station, or with driver intervention depending on which method is chosen in a risk assesment, and if the trains are articulated, which would be nice, then you are free to move down the train to exit in theory. I'm guessing they won't be artic tho. If they were they could take the train length on the longer platform, increasing capacity and cutting out on shorter platforms, seeing as platform extensions underground are not possible. Capacity should be a bigger issue, with TMS seemingly failsafe. Not too much of a "kerfizzle" for drivers, with the TMS also automatically announcing the cut out for the passengers. I assume of course a full TMS will be fitted to the trains enabling these things to happen. Never seen it fail on the Northern Line where one set of doors is cut out at the extreme leading or trailing ends. |
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Post by Dstock7080 on Jan 26, 2006 16:50:26 GMT
Well at least the recent problem we've had with 7508+7529 being together has now temporarily gone away!, both going for refurb from today, we wait to see if it reoccurs when they return or whether others will take their place on 'the road'?
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Deleted
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Post by Deleted on Mar 14, 2006 22:14:09 GMT
This subject appears in two threads ...but my first sight of two double enders coupled together was the returned first two double end refurb units. As photoed at Wimbledon today. Not quiet my train though ...i was set 33 it was set 32 !! I am told, by an instructor, they are likely to be split soon as reformation of coupled refurbs commences - wonder if we'll get mixed livery formations ;D  |
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Phil
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Post by Phil on Mar 14, 2006 22:21:10 GMT
As they say, aspect, a picture's worth a thousand words!!
Thanks for that
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Deleted
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Post by Deleted on Mar 14, 2006 22:30:17 GMT
Amazing!
I wonder how many refurbs are needed before ECDPT and UDPT are given the go-ahead to begin splitting and reforming the units as desired.
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Deleted
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Post by Deleted on Mar 14, 2006 22:58:02 GMT
wonder if we'll get mixed livery formations ;D We won't - a refurb and a non-refurb unit can't run together in service, althought they could be coupled in an emergency. |
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Deleted
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Post by Deleted on Mar 14, 2006 23:36:17 GMT
There is of course, the option of getting two units with differing blue striping - how exciting! ;D
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Post by Dstock7080 on Mar 16, 2006 13:08:35 GMT
Amazing! I wonder how many refurbs are needed before ECDPT and UDPT are given the go-ahead to begin splitting and reforming the units as desired. I was under the impression that with the arrival back of train14 (7508+7529) that uncoupling of refurbs would now be allowed. |
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Deleted
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Post by Deleted on Mar 17, 2006 12:55:15 GMT
I'm not sure how you folks manage to incorporate bit's of another post.... however, by "mixed livery" I did indeed mean differing versions of the blue stripe / white door surrounds as surmised by TheOneIkea  |
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Colin
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Post by Colin on Mar 17, 2006 13:40:47 GMT
I'm not sure how you folks manage to incorporate bit's of another post.... ;D ;D ;D ;D Have a look at the top right hand corner of this post when you are logged in...................it has two boxes, one says 'reply', the other says 'quote'. Hit the quote button and the text in that post will appear in your own post!! |
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Deleted
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Post by Deleted on Mar 31, 2006 18:27:48 GMT
Undertook annual D stock, stock refresher training today, what train do we get allocated to "play" with ...none other than the "Double Bubble". Having worked set 107 during the morning it was due out afternoon peak and evening as set 106, with the depot stated intention that it will be split and reformed at Ealing Common overnight tonight. We shall see tomorrow if that has occurred. |
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Colin
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Post by Colin on Mar 31, 2006 21:06:30 GMT
So you do your refresher on the train at the east end then? (oopppsss, did I say that out loud?  ;D ;D ;D) |
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solidbond
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Post by solidbond on Mar 31, 2006 21:31:14 GMT
Now let's not go there Colin we ALWAYS do stock refresher on the trains ;D ;D ;D |
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Deleted
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Post by Deleted on Mar 31, 2006 23:22:09 GMT
Now let's not go there Colin we ALWAYS do stock refresher on the trains ;D ;D ;D With a good supply of balloons! *hides from Colin* |
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Colin
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Post by Colin on Apr 1, 2006 1:09:53 GMT
Now let's not go there Colin we ALWAYS do stock refresher on the trains ;D ;D ;D b*gger - i've just realised my C stock refresher is next month  ;D ;D With a good supply of balloons! *hides from Colin* And there was me thinking that had long been forgoton ;D |
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prjb
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Post by prjb on Apr 1, 2006 18:45:57 GMT
I assume of course a full TMS will be fitted to the trains enabling these things to happen. Never seen it fail on the Northern Line where one set of doors is cut out at the extreme leading or trailing ends. Yes, they will have a similair system to the Bombardier built 377's. |
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;D ;D It's not that common, but earlier this week there were indeed 2 double-enders coupled together. I think I saw them on Tues and Weds. I've a feeling they have been uncoupled now though 
Whilst more and more single ended units get refurbed, I guess, two double's forming a train was going to be inevitable sooner or later. I note the rules prevent a train being formed of one refurbished unit and one unrefurbished (even if they were compatible electronically). 
;D ;D ;D)
;D ;D
