Chris M
Global Moderator
Forum Quizmaster
Always happy to receive quiz ideas and pictures by email or PM
Posts: 19,767
Member is Online
|
Post by Chris M on Sept 28, 2009 19:09:44 GMT
If you ask many people on here then the answer is that it should have been done a few years ago.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 28, 2009 19:17:40 GMT
If you ask many people on here then the answer is that it should have been done a few years ago. I'd agree with that sentiment.
|
|
metman
Global Moderator
5056 05/12/1961-23/04/2012 RIP
Posts: 7,421
|
Post by metman on Sept 28, 2009 21:02:26 GMT
I'd hate to see them scrapped, but I agree they need help! New motors, interior refurb and body repairs. Is this all possible however?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 28, 2009 21:33:16 GMT
surely the motors wouldnt need replacing, maybe they just need a bit of an overhaul and better maintenance
|
|
metman
Global Moderator
5056 05/12/1961-23/04/2012 RIP
Posts: 7,421
|
Post by metman on Sept 28, 2009 22:16:51 GMT
There was talk of them moving from DC to AC. I'm not an expert on the 92ts so I'm not 100% sure. The body work is very poor. I don't know what the answer to that. The interior is probably the easy bit.
|
|
|
Post by ruislip on Sept 28, 2009 23:13:20 GMT
Does the presence of ATM on the Central have anything to do with the hatred toward the 92s?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 29, 2009 6:41:52 GMT
There was talk of them moving from DC to AC. I'm not an expert on the 92ts so I'm not 100% sure. Is that work going ahead? The Wikipedia entry for the 92ts suggests it is but does not cite a reference. It has been suggested in various places such as Squarewheels that it would be cheaper to replace them. The tender document I saw estimated the budget for the work at between 90 and 130 million pounds.
|
|
|
Post by plasmid on Sept 29, 2009 8:50:53 GMT
I'd say they should be replaced. There never seems to be enough trains running during peak. I'm always waiting 3 minutes at the very least and on such a busy line it's not good enough.
I'm led to believe that changing to AC motors is the most costly as it requires re-wiring most of the electrical equipment hence the push towards new trains. Is this right or wrong??
If I was TFL I'd wait until 2020 once all the other lines are completed, then take a review into the best train and ATO system available and implement it onto the Central Line. By 2020 technology would have evolved again. This would probably mean introducin beta trains by 2017. A refurb on the exterior and interior wouldn't go a miss though...like they done on the D stock.
|
|
Phil
In memoriam
RIP 23-Oct-2018
Posts: 9,473
|
Post by Phil on Sept 29, 2009 10:08:37 GMT
Having followed this thread only scantily, I feel the contributors have made my (and others') point very well in that the idea of having one type of stock for all (tube) lines is a good crazy idea.
For those who insist on sticking to this dogma, just imagine what would be happening if there were 92s on the Jubbly, the Northern, and lined up for replacement on the Picc etc. .........
No - each time replacement is called for out goes a tender for a new design (similar or totally different from what's gone before). If it works - fine, we might have some more next time. If not (as with the 92s) accept it as a failure and resolve to do better in future.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 29, 2009 13:36:49 GMT
I am also a big 1992 stock fan. They are in my opinion the best tube stock LU has. Fast, good brakes and I think well designed. They can swallow up a few people in peak hours. Excellent trains which I think have a lot of atmosphere.
|
|
Ben
fotopic... whats that?
Posts: 4,282
|
Post by Ben on Sept 29, 2009 15:51:44 GMT
The design isn't bad for the service they run, and theres nothing inherently wrong with it (aside from seats), its just poorly built and cheaply constructed.
But, back to Phils point though; Between the 'S' stock for the SSR, the bodyshell design for the JN(and possibly)P and the 67/72 body shell for the BCV, standardisation has, or is, happening...
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 29, 2009 20:17:43 GMT
I'm always waiting 3 minutes at the very least and on such a busy line it's not good enough. 3 minutes not good enough? What intervals would you say was? Good grief, it's hardly the end of the world now is it?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 29, 2009 20:35:29 GMT
3 minutes not good enough? What intervals would you say was? Good grief, it's hardly the end of the world now is it? Have to say I thought the same myself, but didn't want to say anything! Thing is on the Central, for a three minute gap somewhere, another part of the line (I would say another busy part) is getting a one minute frequency, just the way it works on high frequency lines.
|
|
|
Post by 1938 on Sept 29, 2009 20:40:13 GMT
I'm always waiting 3 minutes at the very least and on such a busy line it's not good enough. 3 minutes not good enough? What intervals would you say was? Good grief, it's hardly the end of the world now is it? The mind boggles thinking what the guard on a ’62 would reply to that comment! ;D
|
|
|
Post by plasmid on Sept 29, 2009 21:55:38 GMT
I'm always waiting 3 minutes at the very least and on such a busy line it's not good enough. 3 minutes not good enough? What intervals would you say was? Good grief, it's hardly the end of the world now is it? Allow me to explain the presence of this comedy club... The boards at Leyton display 1 minute when a train enters Leytonstone...so the total time for the train to arrive is 3 minutes. So when the board says 3 minutes...it's actually 5 minutes. Now during the morning peak the trains enter Leyton station packed...you get to the next stop Stratford and everyone alights off the national express and jams onto the Central line...packed. Then you have to fight to get off the next station Mile End as the platform is...wait for it...packed primarily because the District line trains run through Mile End twice as frequently as the Central line trains. I only have to put up with two stops of misery but it's like this every single day of the working week and I'm fed up of being squashed by women with their handbags (who refuse to take them off their shoulders and place them in their hands), men with their rucksacks (who refuse to do the same) and people who smell primarily because they like a curry for breakfast and thus the garlic comes out with their sweat. I usually have to wait for 3 trains before I can get on one. Although erm...I gather a lot of trains aren't in service since they're falling apart.
|
|
Phil
In memoriam
RIP 23-Oct-2018
Posts: 9,473
|
Post by Phil on Sept 29, 2009 22:05:16 GMT
But, back to Phils point though; Between the 'S' stock for the SSR, the bodyshell design for the JN(and possibly)P and the 67/72 body shell for the BCV, standardisation has, or is, happening... Two points: 1. The Picc bodyshell (73) was specifically designed for luggage to Heathrow - not standard and not necessary on other lines. I hope the same is true for its replacement. 2. My main point was not about shells (altough improvements in aluminium welding are continuing) but the traction packages. Each line's stock has had improvements as technology improves. Some are better than others but if one design is less good the whole tube stock is not condemned for 30+ years. S stock is being properly tested, but if there are major problems in service the whole SS network will suffer, not just one line. "Standard" stock (of the 20s/30s) was designed in-house and worked well because it was capable of major improvements during its life (EP brakes etc.), something not possible or likely in the current regime.
|
|
Ben
fotopic... whats that?
Posts: 4,282
|
Post by Ben on Sept 30, 2009 2:07:22 GMT
True enough that the design of the 73ts was for heathrow, but with the 95/96 stocks the design has somewhat been perpetuated, not for luggage, but for standees and for wheeled things. Would a six car 96 tube stock not be able to accomodate luggage, for example?
The 95/6 body shell was implied as the basis for the replacement for the pic line stock on here somewhere aswell...
Fair play about traction packages; technology marches on and all that. Is it not likely though that eventually there will be a greater standardisation of bodies and such parts? Whereas developments in traction are constant, changes in how passengers use the space provided are far less radical over time; and with todays capacity requirements aren't likely to go backwards either. An interesting future perhaps.
|
|
Phil
In memoriam
RIP 23-Oct-2018
Posts: 9,473
|
Post by Phil on Sept 30, 2009 7:28:35 GMT
Is it not likely though that eventually there will be a greater standardisation of bodies and such parts? Whereas developments in traction are constant, changes in how passengers use the space provided are far less radical over time; and with todays capacity requirements aren't likely to go backwards either. An interesting future perhaps. The safest place for doors to open to is still pockets within the structure of the body. At present aluminium technology is unable to get the strength of the shell with such large apertures which is why we have gone over to externally hung doors. If/when aluminium technology improves I hope they'll go back to pocket doors which are inherently safer. So bodyshell design may not yet be set in stone.
|
|
|
Post by plasmid on Sept 30, 2009 9:09:46 GMT
Will 95/96ts bodyshell become the standard? Maybe for Alsthom but the 92ts can be treated as a standard for Bombardier. For example the 2009 stock has wide doors, similar end-of-carraige windows, body design and probably lots of other stuff I have yet to see.
It all goes down to who wins the contracts for the Bakerloo, Picc etc.
96ts is 7 carriages by the way, 95ts is 6 carriages.
|
|
|
Post by d7666 on Sept 30, 2009 15:35:23 GMT
I'm not sure I understand that. Unless I've missed something obvious.
Structural integrity - or crashworthiness if thats how one wants to view it - is entirely in the main body structure - not in the doors. The *doorway* may contribute by size and shape - but not the door. So it does not matter what the door mounting is.
A body that has pockets for externally mounted doors is structurally no different from a body with pocket mouinted doors (or indeed even plug doors) is the sense that the body structure has to support and maintain itself including those gaps for doors - what moves in and out of those gaps is irrelevant.
Think of a metal pipe with holes cut in the side. If you cover up the holes with something that slides on the outside of the pipe (like 92/95/96 doors do) or slides inside the pipe (other stock) neither makes any contribution to the tubes structural strength.
-- Nick
|
|
Phil
In memoriam
RIP 23-Oct-2018
Posts: 9,473
|
Post by Phil on Sept 30, 2009 16:45:20 GMT
I'm not sure I understand that. Unless I've missed something obvious. External sliding doors could (in extreme) catch or injure someone waiting to board. Internally sliding doors can't.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 30, 2009 17:35:01 GMT
What are the shells of the D78 stock made of? Steel?
|
|
metman
Global Moderator
5056 05/12/1961-23/04/2012 RIP
Posts: 7,421
|
Post by metman on Sept 30, 2009 18:05:38 GMT
Aluminium Alloy.
|
|
|
Post by superteacher on Sept 30, 2009 18:54:52 GMT
3 mins on the Central IS a long time. When it runs every 2 minutes, they are busy and sometimes packed. As soon as the peak service drops a bit, it becomes crush loaded every train.
But in reponse to the earlier post, 3 mins is NOT the norm during the peak, althougn it will happen from time to time. If a train is cancelled, the gap would be 4 mins.
And as for the comment about the District line running more frequently than the Central through Mile End, that is just plain rubbish, even more true during the off peak.
The Central line is, and always has been, packed during the peaks, and Leyton through to Bank is very busy. It's called rush hour - try travelling in Tokyo!
|
|
Ben
fotopic... whats that?
Posts: 4,282
|
Post by Ben on Sept 30, 2009 19:22:53 GMT
Well didn't the external doors shear off in one of the derailments? To take that one further, imagine what Moorgate would have been like with external doors.
|
|
|
Post by edwin on Sept 30, 2009 21:19:00 GMT
I'm not sure I understand that. Unless I've missed something obvious. External sliding doors could (in extreme) catch or injure someone waiting to board. Internally sliding doors can't. A tea cosy could kill you in an extreme circumstance. I guess we shouldn't have tea cosies anymore.
|
|
|
Post by d7666 on Sept 30, 2009 21:26:36 GMT
Well didn't the external doors shear off in one of the derailments? To take that one further, imagine what Moorgate would have been like with external doors. Off the top of my head I would dispute it would have made any difference to crash damage, might have resulted in less metalwork to make its way inside the cars to damage people, and possibly even assist rescue work through being externally removable lumps of metal. Thats a hard one to assess ... so I'll ask a question them. Can someone find some documented proff and/or stat to prove externally hung doors are more dangerous than those that are not. -- Nick
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 30, 2009 21:32:19 GMT
To take the externally hung door thing from a different perspective, it allows the red part of the livery to be permanently visible
|
|
|
Post by 21146 on Sept 30, 2009 21:47:39 GMT
To take the externally hung door thing from a different perspective, it allows the red part of the livery to be permanently visible Aren't externally-hung doors inherently unsafe in that they are more easily knocked off in an accident (see Chancery Lane) and actually cause the width of the passenger saloon to be narrower overall than would otherwise be the case if traditional door pockets had been used (as on class 378s). They also look clumsy and ugly although that's not my main point. I'd hoped their use on the 92TS, after being trialled on the 86TS, was going to be a short-lived aberration but alas not it seems.
|
|
|
Post by 21146 on Sept 30, 2009 21:57:14 GMT
To take the externally hung door thing from a different perspective, it allows the red part of the livery to be permanently visible Presumably if the red door leafs "disappeared" into the white car body when opening, visually-impaired people would be suddenly deemed incapable of knowing how to get on?
|
|