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Post by 100andthirty on Mar 4, 2007 15:54:37 GMT
Thanks for the welcome and I promise to triple check my spelling in future
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Post by 100andthirty on Mar 4, 2007 11:29:20 GMT
Dear all
My first post!
Both 1973 tube stock and D stock have the same installed traction packages (PCM camshafts), and 12 traction motors (LT118) and are capable of the same performance as they weigh about the same. D stock's settings mean that it's a bit "slower" than 1973 tube stock. air resistance is a factor at high speeds, but can be neglected at speeds below 40mph.
Wheel size is irrelevant for performance - and smaller wheels just mean that a different gear ration is needed compared with big wheels.
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Post by 100andthirty on May 17, 2007 17:53:13 GMT
I'm confused and I'd appreciate a bit more information
We run only 530 or so trains. Once all the upgrades are done there'll be less than 600. With three digit train/set numbers, there should be plenty.
I'm aware that the car number is coded into the connect radio. Surely the only area of confusion could be with the Picc, and their set numbers could, for example be 900 plus. I think I've missed the point along the way
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Post by 100andthirty on Jul 14, 2007 18:38:59 GMT
I travel routinely on class 350's and they have auto close. Perhaps its customers are more laid back than LU's but it doesn't cause a problem - and is set so that it only normally operates at terminus station or other places where there's a very long dwell.
I don't think it'll be a problem, and it will sound a chime
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Post by 100andthirty on Jul 11, 2007 17:09:15 GMT
try the bi-parting doors to first class on class 350@s and you get the idea without much personal risk!!!!!!
I suspect there'll need to ba a number of attempts to get it right. I have seen those that detect an obstacle and open, those that then have another go - or two or three - and those that open then sound a continuous chime and slowly but firmly close.
irrespective of the obstacle detection, they will be big heavy doors and you'll know it if one hits you
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Post by 100andthirty on Feb 18, 2008 22:39:39 GMT
Is radio being used rather than inductive loops where there's a suicide pit? No, Radio is not being used. Loops will be added to the suicide pits somehow. If you're ever at Bank, pop down to the DLR platforms and look at the loop there. That'll give you the general idea
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Euston
Mar 9, 2008 20:40:56 GMT
Post by 100andthirty on Mar 9, 2008 20:40:56 GMT
the Dot matric indicators have been installed in the booking hall roughly where the in-bound gates used to be (if the bit about the gates comes as a surprise, then I suggest you pay a visit
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Post by 100andthirty on Jun 20, 2007 5:23:27 GMT
Comment made that the driver would have noticed the platform was on the wrong side when closing the doors. Unfortunately the image in the CCTV at any platform is identical regardless of which cab you're in.
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Post by 100andthirty on Mar 28, 2007 20:12:28 GMT
New Scientist magazine annually reports on the Darwin Awards - people who've topped themselves in mad ways. This is one of the madder attempts; shame he didn't succeed. He's certainly on my "little list":
For those who like Gilbert and Sullivan's the Mikado, the Lord High Executioner sang:
As some day it may happen that a victim must be found, I've got a little list.....................
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Post by 100andthirty on Mar 23, 2008 16:16:46 GMT
The noise in the second video in your first post is - if I've followed the instructions correctly - what is known as roaring rails and is derived from corrugation - explained eslewhere in this thread
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Post by 100andthirty on Dec 13, 2007 19:25:48 GMT
They are old, tired and deserve retirement to the great depot in the sky!
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Post by 100andthirty on Oct 25, 2007 20:30:43 GMT
Note, the Autodriver box was updated in the '70's, replaced in the '80's and is about to be replaced again prior to new trains
Safety box is a lot more original and is beginning to show its age!
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Post by 100andthirty on Oct 2, 2007 18:22:09 GMT
Well done - jolly good looker.
detailed point - there's what looks like door controls for the non-existant cab doors!!!!
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Post by 100andthirty on May 30, 2007 15:39:04 GMT
As far as I know the control tower remains independent of the SCC; The former controlled by Metronet and the latter by LU
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Post by 100andthirty on Jun 2, 2007 17:55:37 GMT
You are right - manual operation
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Post by 100andthirty on May 21, 2007 20:11:55 GMT
Dear all
note from professional pedant!!
IGBT - Insulated Gate Bipolar Transistor - not Thyristor
regards
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Post by 100andthirty on May 14, 2007 17:05:51 GMT
to all who wish to know what the button on the TBC handle is for.....
It is intended to be used for Passenger alarm brake override in manual operation.
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Post by 100andthirty on Mar 8, 2008 19:06:40 GMT
In the early '90's there were very ambitious plans to increase services on the Picc. At one point the service was increased to 27 trains/hour. The impact on the service was terrible and eventually the service was reduced to 24 trains per hour. 24 trains/hour actually delivered a better practial throughput than 27 trains/hour. The infrastructure/signalling wasn't capable of more than 24 trains/hour.
Since then they have dramatically improved the reliability of the line, but........ with more and more customers it has taken longer for trains to get around the line.
The upshot of all this was that there were/are enough 1973 tube stock trains and the '83ts wasn't needed.
However they all carried Donor cards and have helped other trains have a long and happy life though the wonders of organ (component) transplants!
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Post by 100andthirty on Nov 15, 2007 21:49:15 GMT
The new system was checked out with the first train and was found not to be right, so was not brought into use. OPO has to be checked with a train present and it is really hard to get a train in a platform during engineering hours without booking weeks in advance.
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Post by 100andthirty on Jul 15, 2007 19:25:42 GMT
No - it just happend to be an available train
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Post by 100andthirty on Jul 15, 2007 6:05:06 GMT
No, it's not Sticklube - Sticklube is simply a normal lubricant in solid form and is applied the the flange root - where the wheel contacts the side of the rail when the flange is doing its job. This stuff is applied to the tread and has the ability to reduce squeel, damage to wheels and rails and to prevent rolling contact fatigue. the test is to ensure the trains still stop. Some other railways use it, but on something as important as stopping properly(!) we have to assess it for ourselves. Anyone interested might want to look here: www.kelsan.com/solutions/index.asp
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Post by 100andthirty on Jul 14, 2007 18:33:25 GMT
1) there are not enough '72's on the Vic to support the Bak; some 67's will have to go
2) The '72ts is testing a magic gunge called a friction modifier. It's magical properties include lowering the friction level between the wheel and the rail if it's too hivh and helping to raise it if too low.
If this sounds too good to be true - it does work in other places - and if you believe that there can't be too much friction, think again!!!!!
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Post by 100andthirty on Apr 23, 2007 20:17:28 GMT
The prototypes suffered two problems; not enough seats and it was hideous. We employed an industrial designer and with a nip and tuck here and there we got 4 seats. Thus there was a business case to go ahead. The acid test was a couple of large engineers sitting side by side. Customer acceptance testing on the final result was the best ever!
C stock, however, is a bit tired now!
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Post by 100andthirty on Jun 30, 2007 14:51:51 GMT
S stock will be limited to 60mph. It will get there much quicker than A stock once A stock is replaced, but there will be an absolute limit of 60 with the new ATO/ATP
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Post by 100andthirty on Jan 27, 2008 11:02:22 GMT
I still remember 20 years ago running a test train to the Epping Ongar branch and "they" isnsited I took a possession with lookouts at both ends to protect the possession from intrusion. As the signalling only let one train in and the other end was a dead end, it was all a waste of time, but "rules were rules" and I wanted to get the test done!
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Post by 100andthirty on Apr 1, 2008 20:55:11 GMT
I imagine you say something along the lines of "oh dear something has gone wrong; what a pity!" - in basic Anglo Saxon
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Post by 100andthirty on Apr 1, 2008 20:39:44 GMT
There will be people looking at this Central Line thread titled "Starting to get Unreliable" and finding a debate about the merits of C stock D stock and S stock. They'll inevitably think they've stumbled on a madhouse! Can we close this thread and start again? or break off the SSL parts and put them elsewhere? Moderators?
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Post by 100andthirty on Mar 31, 2008 17:19:16 GMT
It is not clear to me what cheap means in this context?
nearly 1400 vehicles of S stock are being obtained - wouldn't you expect a quantity discount?
I have see nothing "cheap" about their construction.
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Post by 100andthirty on Mar 31, 2008 4:43:25 GMT
Note: 1996 stock have AC motors as well as 1995 stock. The technology in the traction packages is different between the two stocks, but both have ac motors and no brushes.
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Post by 100andthirty on Mar 30, 2008 19:01:20 GMT
92 stock has DC motors and brushes
95, 96 stocks have ac motors and no brushes
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