Home |
Search |
Today's Posts |
|
London Transport (uk.transport.london) Discussion of all forms of transport in London. |
|
LinkBack | Thread Tools | Display Modes |
#14
|
|||
|
|||
Thameslink NGEMU procurement - now in motion
On Apr 10, 8:53*am, D7666 wrote:
On Apr 10, 8:44*am, John B wrote: if there are reasons 26 metre cars can't be used; I would suggest there would be door access issues with stock longer than 20 m. On 20 m cars like 317/319/321 and 450/377/375 and 376 et al door spacing is approx 1/3 and 2/3 car. A 26 m car would be more like 1/4 and 3/4 door spacing - which would lead to longer dwell times - any more to place doors further towards the middle of a 26 m car would have to larger a throwover at curved platforms - of which there are too many stations to resolve. If you take a look a 444s at Waterloo where the country end of a 10car is on the curve its easy to see how much a 23 m car throws over. *444s have end-ish doors so its no big deal - but imagine even 1/3 + 2/3 spacing on one of those cars leads to a big gap. The end doors only solve the problem when the doors are on the outside of the curve (if you see what I mean). If the platform is on the inside of the curve, then the end doors are further away from the platform than at the 1/3, 2/3 positions. You can see this more clearly on some of the tightly curved platforms on the underground. At some platforms the middle doors have the smallest gap and at other platforms the end doors are 'best'. Best example I can think of, off the top of my head, is Bank Central line. I'd have thought going the other way - to *shorter* but articlulated cars might be better. I certain agree with this. |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Exciting news on Thameslink 2000 (now "Thameslink Project") | London Transport | |||
Concorde! on BBC2 now | London Transport | |||
Help!!!! What happens now! Buying ticket from ticket tout | London Transport | |||
Help!!!! What happens now! Buying ticket from ticket tout | London Transport | |||
East London Extension now has its own website | London Transport |