Piccadilly Line Train oddity

The 73 Stock can cut out those doors, it's referred to as "End Door Cut Out" and will only operate in the first car.

It's used for small over-runs, reversing east to west at Kings Cross and west to east at Hyde Park Corner.

It's operated by a switch on the bulkhead door buttons and sometimes it can get clipped by a shoulder or something and there is no warning indication for it.

imdbmtirt, could you please extrapolate on "another bad driver problem". Do you mean the one in CSO's situation? It's not a very nice thing to say or the right thing if so; the driver was actually the opposite of "bad" as he went straight back to open the doors. If its just a general sweeping comment about drivers brought upon by this example I ask that you do a little more research and I would be interested in knowing why you think and claim this.

At Stratford on a 92ts a few years back the driver opened all the double doors and left the single leaf doors closed. Not sure if that's possible or if it was a glitch/fault.

This has happened to me before on a '73; I was ready to board through the first set of doors of the first car as the train pulled in but those doors didn't open. I thought the driver didn't like me!

Ditto

73 stock have selective close which leaves 1 double door and a single leaf open IIRC.
As the selective close door valves are AC and the ordinary close valves are DC a too short a press on the buttons can occasionally cause some odd effects.

This is from memory probably years out of date by now. :-)

There is no such thing as selective opening*, but there is selective close which works as described in reply #10

To summarise:

• End door cut out does exactly that, at either end of a train (depending on selection in cab), and is used for slight over runs or short platforms.
  
• Selective close will close most doors on a given train, but will leave at least one doorway open on each car. Selective close is used in winter to help reduce heat loss inside the cars.

If anything else happens with the doors, it is usually some sort of fault. In the case of an opening error, maybe like that described in the OP, its probably a simple case of the message to open not reaching the door motors - a few presses of the open buttons will normally sort it and on this occasion that appears to have happened as mentioned in the OP.

Closing issues can also be solved by pressing the close button a few times to make sure all door motors get the message.......but there is another more usual culprit when it comes to door closing issues - obstructions. Be it people, bottles, cans or even news papers; Obviously removing the obstruction removes the fault!

* _{D stock does have selective re-opening but that is irrelevant in the context of this thread.}

I've not known too short a press of the open buttons to cause a "selective open" scenario, only where it causes the DVA not to function.....frequently.

I think this is what I meant.



During train prep I have seen this happen on the odd occasion. Mind you this is during testing 16 trains from each end and opening and closing the doors both sides from each end three times mainly pre-refurb and all an age ago.