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Post by oe on Jan 20, 2011 12:54:45 GMT
Apologies for the cryptic subject but I couldn't think of the best way to describe my question succinctly!(Bonus points for solving the cryptic subject!)
Basically I was wondering why trains jolt when departing stations. Most nights it seems to happen at Bond St. and St. Pauls. Is it merely people leaning on the doors or is there some other reason?
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Post by Deleted on Jan 20, 2011 19:15:36 GMT
Apologies for the cryptic subject but I couldn't think of the best way to describe my question succinctly!(Bonus points for solving the cryptic subject!) Basically I was wondering why trains jolt when departing stations. Most nights it seems to happen at Bond St. and St. Pauls. Is it merely people leaning on the doors or is there some other reason? If this happens in the same place all the time it's likely due to a gap in the current rails. If it happens randomly when the train is heavily loaded it's likely to be someone leaning on the doors or a weak mag lock under the end perch seats which has the same effect as leaning on a door. |
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Post by Deleted on Jan 20, 2011 20:46:07 GMT
What are these mag locks under perch seats?
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Post by oe on Jan 20, 2011 21:25:23 GMT
Happened again tonight at Bethnal Green so I do suspect it is passengers squashed up against the doors.
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Post by Deleted on Jan 20, 2011 23:58:46 GMT
What are these mag locks under perch seats? They are interlocks under the end perch seats and cabinets They detect that the seat is down and cabinet is closed. They work on the trains door cuircuit in the same ways as the doors. If a maglock becomes defective often when someone sits on the seat will cause a break in the trains door closed curcuit and stop the train motoringcausing the jolt. |
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Post by Chris M on Jan 21, 2011 0:51:57 GMT
Is there a way to tell it's a maglock rather than the doors? As no amount of opening and closing doors is going to fix a maglock problem?
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Post by Deleted on Jan 21, 2011 7:27:36 GMT
Is there a way to tell it's a maglock rather than the doors? As no amount of opening and closing doors is going to fix a maglock problem? I can't remember I left the Central 15 years ago. |
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Post by Deleted on Jan 25, 2011 11:38:13 GMT
“Cabinet Open” doesn’t have that effect anymore, it just turns up on the DTS. If the door interlock is interrupted for long enough we get “Door Warning” and which car it’s on from DTS but most times the “door closed visual” just flickers off for a moment.
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Post by Deleted on Jan 27, 2011 15:41:03 GMT
As the thread is entitled 'Jurgen Hingsen', is it describing a prolem that occurs Daley..... ;D  ;D |
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Post by oe on Jan 28, 2011 8:16:30 GMT
Very good!!! that's along the right lines but not the correct answer.
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Post by auxsetreq on Jan 28, 2011 9:54:43 GMT
What a wonderful name for the tookow that lives just outside my window - Jurgen the tookow, that is now your name. A tookow, if that's the way to spell it is an eight to ten inch orange with blue spotted gecko that laughs every half hour or so. Which is a bit like the laugh we used to have in asking on the PA for people sitting on the perch seats to stand up or the train won't move. You couldn't make it up, but it really happened. You actually had to tell em to stand, or else sit there all day. Ridiculous that the perch seats were on the door proving circuit in the first place. Whoever thought of that must of been called Jurgen with toxic blue acne. One of the first of a zillion mods. Still comes up as an alarm when a fat rear sits on em - Cabinet Door Open. The lurching is caused by as already pointed out people leaning on the doors coupled with the ATO acceleration. Technically an ATO interruption which means that the driver should drive giving it a little less welly on the go-faster/slower pedal with some nifty clutch work, but then again as we don't want to give certain posters here with stop watches the notion that there could be an extra .000927% algorithm- frequency-second between trains we usually don't until the train claps out, phutt phutt phutt........
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Post by oe on Mar 4, 2011 8:02:14 GMT
In the Answers to Correspondents section of The Daily Mail on Monday or perhaps Tuesday this week was a question about "Why do trains go TOK and lose power......"
I'll keep my eye out to see what hoi polloi answer!
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Post by astounded on Mar 4, 2011 9:33:04 GMT
Jürgen Hingsen was an athlete who got himself thrown out of the decathlon at the Olympics (I think Barcelona, 1992) because he made a load of false starts while attempting the 100m. This thread is about trains making false starts, sort of, maybe?
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Post by oe on Mar 4, 2011 12:52:17 GMT
correct! Though i think that incident was in Seoul 88
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Post by tubeprune on Mar 4, 2011 16:01:29 GMT
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Post by underground2010 on Mar 7, 2011 15:26:16 GMT
When people lean on the doors, doesn't that prevent the train from moving as against just jolting? It happened on the bend coming out of the tunnel heading towards Leyton one night. Some guy was leaning on the door and the train suddenly came to a hault and the driver said that until whom-ever is leaning on the door gets off, the train won't move.
I always thought the jolting of the train would have something to do with the traction?
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Post by Deleted on Mar 7, 2011 15:42:08 GMT
When people lean on the doors, doesn't that prevent the train from moving as against just jolting? It happened on the bend coming out of the tunnel heading towards Leyton one night. Some guy was leaning on the door and the train suddenly came to a hault and the driver said that until whom-ever is leaning on the door gets off, the train won't move. I always thought the jolting of the train would have something to do with the traction? The loss of door interlock cuts out the motors but doesn’t apply the brakes. The train stopping the way you describe it was probably the TOp knocking out the TBC to activate the emergency brake when they lost the door closed visual for too long. Another reason for “Jurgen Hingsen” is “ATO not ready”. Don’t ask me why this happens but every now and then when we press the “start” buttons on a 92 it sets off for the tiniest moment and then pulls up in a heap, with “ATO not ready” flashing up on the DTS. Sometimes it restarts when you try the buttons again and sometimes we have to knock it out into Coded Manual and take it on to the next station. |
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Post by auxsetreq on Mar 7, 2011 16:25:05 GMT
When people lean on the doors, doesn't that prevent the train from moving as against just jolting? It happened on the bend coming out of the tunnel heading towards Leyton one night. Some guy was leaning on the door and the train suddenly came to a hault and the driver said that until whom-ever is leaning on the door gets off, the train won't move. I always thought the jolting of the train would have something to do with the traction? The loss of door interlock cuts out the motors but doesn’t apply the brakes. The train stopping the way you describe it was probably the TOp knocking out the TBC to activate the emergency brake when they lost the door closed visual for too long. Another reason for “Jurgen Hingsen” is “ATO not ready”. Don’t ask me why this happens but every now and then when we press the “start” buttons on a 92 it sets off for the tiniest moment and then pulls up in a heap, with “ATO not ready” flashing up on the DTS. Sometimes it restarts when you try the buttons again and sometimes we have to knock it out into Coded Manual and take it on to the next station. I can tell you why. You didn't press long enough. It's a minimum of two seconds or the train stops and attempts to upload map data again. You immediately attempt restart and the data hasn't fully uploaded and the DTS flags ATO Not Ready. Another attempt and it's all gone in there, right into it's little mind. Doesn't always do this, but that's the general rule. My fave ( how sad ) is Out Of Mapping Data when the train's brain runs out and it just r........o................l.........................l............................s to a stop......................... Oh, I'm gonna add that of course I'm *entirely wrong* even though I do this day after day after day after day after day after day day after day after day day after day after day to the power of E = Ceiling Cat squared, and that some algorithm and best bone china firmware in the train's brain says that I should be sitting on top of my fridge freezer breathing slowly and rhythmically into a brown paper bag. Which I am............ |
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Post by causton on Mar 7, 2011 20:51:20 GMT
Auxsetreq needs an award for the most informative, yet puzzling, posts of the year  |
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Post by Deleted on Mar 7, 2011 20:53:08 GMT
Auxsetreq needs an award for the most informative, yet puzzling, posts of the year And a teeny bit scary at times  I do agree. |
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Post by Deleted on Mar 9, 2011 10:40:06 GMT
I've had "ATO not ready" pop up even while pressing the Start buttons. Maybe a bit of loose wiring at the back that the train maintainers wouldn't spot.
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;D
I do agree.
