|
|
Post by plasmid on Sept 11, 2010 23:17:58 GMT
They look like they are being installed at a fair rate, saw quite a few trains with new ones this week.
How many units are left to have their Kawasaki bogies replaced with Siemens ones?
Are they replacing all the Kawasaki bogies or are they refurbishing some of them?
Also what's the deal with the sliding thing that pickup the traction current? A lot of 1992 stock have new ones installed that look similar to that of the 2009 stock.
|
|
|
|
Post by auxsetreq on Sept 12, 2010 14:21:30 GMT
They look like they are being installed at a fair rate, saw quite a few trains with new ones this week. How many units are left to have their Kawasaki bogies replaced with Siemens ones? Are they replacing all the Kawasaki bogies or are they refurbishing some of them? Also what's the deal with the sliding thing that pickup the traction current? A lot of 1992 stock have new ones installed that look similar to that of the 2009 stock. By sliding things you mean *shoes* - posi n negi *shoes* - Not to be confused with the ones you put on your feet. |
|
|
|
Post by plasmid on Sept 12, 2010 22:27:12 GMT
Shoes, that would be the one, I've heard it many a times before...just could not remember the name for the life of me.
You are a driver "auxsetreq"...any info on my original questions?
|
|
|
|
Post by plasmid on Sept 14, 2010 0:03:38 GMT
Whilst they won't provide a performance increase, I can still say that mechanically...the 92ts feel fine.
Looks like there may be a pig tail running right in the middle of that shoe there. Difficult to tell from that angle...though it does give a nice clear shot of part of the Siemens logo.
I do hope that the money spent on these units (although necessary - cracking bogies aren't a good thing) the 92ts may one day in the near future (Olympics) reach design speed. But that would be optimistic at best.
|
|
|
|
Post by 1992tsworker on Feb 12, 2011 13:08:43 GMT
I know this is an old thread, but having just joined the board and as I work on Central line maintenance (fitting these Siemens bogies) I can tell you about 85% of the fleet is now Siemens.
As for the shoes there is a bit of a mismatch. Some Siemens bogies have the new (Brecknell Willis) shoegear, but some still have the old type. Some Kawasaki bogies have the old type shoegear whereas some have been fitted with the new stuff. About 70% of the fleet is probably the new Brecknell Willis shoegear. Hope this keeps you all confused!
|
|
Ben
fotopic... whats that?
Posts: 4,282 
|
Post by Ben on Feb 12, 2011 13:27:44 GMT
When the fleet is fully fitted, will their top speed be once again de-capped?
|
|
|
|
Post by 1992tsworker on Feb 12, 2011 13:37:44 GMT
Maybe - I will check with some of the tech guys.
Current target is for 79 trains in service at peak times; rumours began circulating last week that they want this upped to 'every train possible' (i.e up to 85)
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 12, 2011 13:56:28 GMT
New Working Timetable from 6/3/11 requires 77 trains instead of 79. Presumably this it to provide a 'float' for the 'refresh'?
|
|
|
|
Post by 1992tsworker on Feb 12, 2011 14:05:50 GMT
New Working Timetable from 6/3/11 requires 77 trains instead of 79. Presumably this it to provide a 'float' for the 'refresh'? Perhaps, although the new 'maximum' target could be for when the refresh programme is complete. The only unit I know that has been done so far is 183. |
|
|
|
Post by plasmid on Feb 12, 2011 14:25:45 GMT
I know this is an old thread, but having just joined the board and as I work on Central line maintenance (fitting these Siemens bogies) I can tell you about 85% of the fleet is now Siemens. As for the shoes there is a bit of a mismatch. Some Siemens bogies have the new (Brecknell Willis) shoegear, but some still have the old type. Some Kawasaki bogies have the old type shoegear whereas some have been fitted with the new stuff. About 70% of the fleet is probably the new Brecknell Willis shoegear. Hope this keeps you all confused! Fascinating stuff. I did notice that some of the siemens bogies had the old type of shoegears and I always wondered whether if the top speed would be increased after the bogie refresh. But...don't they run 62mph in manual and 50mph max in ATO at present? |
|
|
|
Post by 1992tsworker on Feb 12, 2011 19:55:22 GMT
I know this is an old thread, but having just joined the board and as I work on Central line maintenance (fitting these Siemens bogies) I can tell you about 85% of the fleet is now Siemens. As for the shoes there is a bit of a mismatch. Some Siemens bogies have the new (Brecknell Willis) shoegear, but some still have the old type. Some Kawasaki bogies have the old type shoegear whereas some have been fitted with the new stuff. About 70% of the fleet is probably the new Brecknell Willis shoegear. Hope this keeps you all confused! Fascinating stuff. I did notice that some of the siemens bogies had the old type of shoegears and I always wondered whether if the top speed would be increased after the bogie refresh. But...don't they run 62mph in manual and 50mph max in ATO at present? As I don't drive the trains outside of the depot I wouldn't really know. But I have heard that the drivers rarely use manual mode anyway, even on a sunday. |
|
|
|
Post by 1992tsworker on Feb 17, 2011 22:30:35 GMT
I know this is an old thread, but having just joined the board and as I work on Central line maintenance (fitting these Siemens bogies) I can tell you about 85% of the fleet is now Siemens. As for the shoes there is a bit of a mismatch. Some Siemens bogies have the new (Brecknell Willis) shoegear, but some still have the old type. Some Kawasaki bogies have the old type shoegear whereas some have been fitted with the new stuff. About 70% of the fleet is probably the new Brecknell Willis shoegear. Hope this keeps you all confused! Fascinating stuff. I did notice that some of the siemens bogies had the old type of shoegears and I always wondered whether if the top speed would be increased after the bogie refresh. But...don't they run 62mph in manual and 50mph max in ATO at present? UPDATE...... Cap on top speed is unlikely to be removed as the strain already placed on the traction motors by the use of ATO is causing major problems with flash-overs (the motors are the same that were fitted to the Kawasaki bogies). If the cap was lifted the motor failure rate would be untolerable. |
|
|
|
Post by 1992tsworker on Feb 17, 2011 22:33:04 GMT
Also, in case its of any interest , the Siemens bogie refresh project is being completed at an average rate of 6 units per week (5 at Ruislip and 1 at Hainault).
|
|
|
|
Post by auxsetreq on Feb 18, 2011 1:30:14 GMT
Fascinating stuff. I did notice that some of the siemens bogies had the old type of shoegears and I always wondered whether if the top speed would be increased after the bogie refresh. But...don't they run 62mph in manual and 50mph max in ATO at present? UPDATE...... Cap on top speed is unlikely to be removed as the strain already placed on the traction motors by the use of ATO is causing major problems with flash-overs (the motors are the same that were fitted to the Kawasaki bogies). If the cap was lifted the motor failure rate would be untolerable. We had a handout from the depot a few years ago regarding what was then the unknown reasons for flashovers. The then cause was conjectured to be flats for unknown reasons appearing on the commutators resulting in rapid brush wear leading to kaboom!!! The flats were causing alarming vibrations throughout the whole length of the train at low to mid speeds. Is this still the case as bad vibes these days seem to be rare? Also what's that yellow bogie all about? |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 18, 2011 8:34:40 GMT
So flats were to blame for the vibrations at high speed!? When I was much younger, I was blaming the new track for it because I didnt like them replacing my lovely old track at South Ruislip! That would also explain why I thought the Central line is slower than it was 7 years ago
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 18, 2011 8:44:48 GMT
They were limited to 50mph from 62mph after the Chancery Lane incident @ bronzeonion.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 18, 2011 8:51:09 GMT
Ohh, thought Chancery Lane was a motor coming off the brackets?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 18, 2011 8:54:36 GMT
Pretty much. It's the original bogie design at fault.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 18, 2011 8:58:35 GMT
Are the Siemens ones the of the same design?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 18, 2011 9:02:18 GMT
Don't think they are exactly the same. If they were, it would be a waste of £150m.
|
|
Ben
fotopic... whats that?
Posts: 4,282
|
Post by Ben on Feb 18, 2011 9:47:54 GMT
This is TfL, Charlie.....
All very interesting, thanks for the info 1992tsworker. I remember there was discussion not so long ago about the possibility of replacement ac motors; its a shame this has been dismissed.
As is well known the 92ts was ordered on the 'least initial cost' principal; one wonders if there is a figure out there demonstrating just how much tax payers money this has wasted in the long run.
|
|
|
|
Post by jardine01 on Feb 18, 2011 16:46:02 GMT
With these new simens bogies will the trains get their top speed of 62mph back again?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 18, 2011 18:06:45 GMT
With these new simens bogies will the trains get their top speed of 62mph back again? Reading the thread does help  Check the last page. |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 18, 2011 18:44:28 GMT
But I have heard that the drivers rarely use manual mode anyway, even on a sunday. That's surprising. I understood that the system was designed with manual driving at certain periods (Sundays) in order for the drivers to keep in practice. This apparently (rumour) was due to few previous fender benders in Northumberland Park Depot. F |
|
|
|
Post by tubeprune on Feb 18, 2011 21:06:14 GMT
Would it be possible for someone to post a photo of these new bogies? One without a car on top perhaps? I'd be interested to know the technical details.
|
|
|
|
Post by 1992tsworker on Feb 19, 2011 12:24:10 GMT
We had a handout from the depot a few years ago regarding what was then the unknown reasons for flashovers. The then cause was conjectured to be flats for unknown reasons appearing on the commutators resulting in rapid brush wear leading to kaboom!!! The flats were causing alarming vibrations throughout the whole length of the train at low to mid speeds. Is this still the case as bad vibes these days seem to be rare?
Also what's that yellow bogie all about?[/quote]
Yellow bogie? You must have seen that in a depot as some of the new accomodation bogies are painted yellow. These are only fitted temporarily so a unit/train can move around the yard. A train will never enter service with them fitted!
|
|
|
|
Post by 1992tsworker on Feb 19, 2011 12:35:52 GMT
Ohh, thought Chancery Lane was a motor coming off the brackets? Chancery Lane happened because the 4 rota bolts holding the traction motor in place were (or became) loose. Brackets were then added to the motors of the entire fleet to ensure this incident didn't reoccur. The brackets essentially 'catch' the motor should the rota bolts fail. The new Siemens bogies utilise a different design altogether. |
|
|
|
Post by 1992tsworker on Feb 19, 2011 13:10:01 GMT
Would it be possible for someone to post a photo of these new bogies? One without a car on top perhaps? I'd be interested to know the technical details. I have several photos of the depot environment and can take some of the Siemens bogies if you wish although I'm not at work for a while now. How do I attach photos to a thread because it didn't work when I tried before. Thanks. |
|
|
|
Post by tubeprune on Feb 19, 2011 13:54:21 GMT
Would it be possible for someone to post a photo of these new bogies? One without a car on top perhaps? I'd be interested to know the technical details. I have several photos of the depot environment and can take some of the Siemens bogies if you wish although I'm not at work for a while now. How do I attach photos to a thread because it didn't work when I tried before. Thanks. There's a thread here: districtdave.proboards.com/index.cgi?board=intros&action=display&thread=9165 which offers a way of doing it. If you get stuck, PM me. |
|
|
|
Post by auxsetreq on Feb 20, 2011 11:30:56 GMT
Would it be possible for someone to post a photo of these new bogies? One without a car on top perhaps? I'd be interested to know the technical details. I have several photos of the depot environment and can take some of the Siemens bogies if you wish although I'm not at work for a while now. How do I attach photos to a thread because it didn't work when I tried before. Thanks. A quick and easy way for the occasional picture as favoured by Japanese schoolgirls is to use.......... tinypic.com/.........Just click on the link and follow the easy instructions. Then copy and paste whatever option you want to post the pic - either embed within the text or as a link itself -..........*Direct Link For Layouts * - just like this.......... i53.tinypic.com/k0hhdj.jpg............A pic of a flying bogie after I'd just sneezed. You don't need to open an account and all you need is a couple of brain cells it's that easy. If you don't have any you can borrow one of mine, but give it back as the other one will get lonely................... Auxsetreq mod by Ceiling Cat. On a serious note some depots, particularly Hainault don't like you taking pics, so be covert like a double *O* secret agent. It would seem that some depot DDMs think that Al Qaeda could use the pic of a tube train bogie to launch an attack on such a place. Auxy has been bollocked on more than one occasion for getting out and extending his mega pixel Fuji.......... |
|
