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Post by capitalomnibus on Jul 24, 2023 21:45:29 GMT
With discussion on the District/Piccadilly line, in my opinion these should have swapped branches earlier on when the Heathrow extension was constructed. The District Line offers higher-capacity trains, which would have been better suited to serving Heathrow - more space for luggage etc too - and in the process becoming the non-stop line between Hammersmith and Acton Town. The Piccadilly line then could then have been remodelled to take over the slow lines via Stamford Brook etc, with the smaller tube trains serving Richmond, Ealing Broadway and Rayners Lane. Wimbledon - Edgware Road could be separated as a different line in this case. Can the Heathrow branch of the Piccadilly even take full height trains??? I disagree that the District would have been suited. It was very slow and tiresome and found the Picadilly line trains also slow, were quicker in service than the District. I believe the Picadilly was also longer, until recent S7's were introduced on the District.
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Post by capitalomnibus on Jul 24, 2023 21:47:45 GMT
Many years ago the former Chief Operating Officer of LT Railways said that his biggest regret was not authorising the Heathrow extension to be surface stock loading gauge, it was made Tube stock solely on cost. Maybe on this basis Crossrail 2 should definitely be full size trains. They have initially said to use tube stock on cost.
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Post by M1104 on Jul 24, 2023 23:11:54 GMT
With discussion on the District/Piccadilly line, in my opinion these should have swapped branches earlier on when the Heathrow extension was constructed. The District Line offers higher-capacity trains, which would have been better suited to serving Heathrow - more space for luggage etc too - and in the process becoming the non-stop line between Hammersmith and Acton Town. The Piccadilly line then could then have been remodelled to take over the slow lines via Stamford Brook etc, with the smaller tube trains serving Richmond, Ealing Broadway and Rayners Lane. Wimbledon - Edgware Road could be separated as a different line in this case. Can the Heathrow branch of the Piccadilly even take full height trains??? I disagree that the District would have been suited. It was very slow and tiresome and found the Picadilly line trains also slow, were quicker in service than the District. I believe the Picadilly was also longer, until recent S7's were introduced on the District. I believe the discussion is based on what could have happened from the 1960s when the Heathrow extension was then officially approved. If the District Line was the one to have been extended the trains may've then been airport spec'd C or D stock carriages if not a different type altogether.
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Post by vjaska on Jul 25, 2023 0:59:59 GMT
Can the Heathrow branch of the Piccadilly even take full height trains??? I disagree that the District would have been suited. It was very slow and tiresome and found the Picadilly line trains also slow, were quicker in service than the District. I believe the Picadilly was also longer, until recent S7's were introduced on the District. I believe the discussion is based on what could have happened from the 1960s when the Heathrow extension was then officially approved. If the District Line was the one to have been extended the trains may've then been airport spec'd C or D stock carriages if not a different type altogether. Would that not of pushed the overall project up in cost though?
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Post by Dstock7080 on Jul 25, 2023 7:20:31 GMT
Can the Heathrow branch of the Piccadilly even take full height trains??? I believe the Picadilly was also longer, until recent S7's were introduced on the District. Surface Stock train detector just west of Hounslow Central, although surface stock now banned beyond Northfields. 7-car 1959 Stock was same length as 7-car COP/R. 6-car 1973 similar length to D Stock. The District was due to receive new Stock before the Piccadilly but the Heathrow extension put the PICC in front.
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Post by greenboy on Jul 25, 2023 7:56:49 GMT
With discussion on the District/Piccadilly line, in my opinion these should have swapped branches earlier on when the Heathrow extension was constructed. The District Line offers higher-capacity trains, which would have been better suited to serving Heathrow - more space for luggage etc too - and in the process becoming the non-stop line between Hammersmith and Acton Town. The Piccadilly line then could then have been remodelled to take over the slow lines via Stamford Brook etc, with the smaller tube trains serving Richmond, Ealing Broadway and Rayners Lane. Wimbledon - Edgware Road could be separated as a different line in this case. Interesting suggestion but presumably the District and Piccadilly Line trains would have to crossover in both directions between Hammersmith and Barons Court?
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Post by Dstock7080 on Jul 25, 2023 8:42:30 GMT
Interesting suggestion but presumably the District and Piccadilly Line trains would have to crossover in both directions between Hammersmith and Barons Court? Yup, and currently no connection between Lines at the Hammersmith end.
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Post by rif153 on Jul 25, 2023 9:32:05 GMT
I believe the discussion is based on what could have happened from the 1960s when the Heathrow extension was then officially approved. If the District Line was the one to have been extended the trains may've then been airport spec'd C or D stock carriages if not a different type altogether. Would that not of pushed the overall project up in cost though? At Hatton Cross (and Hounslow West to a lesser extent) you can really feel how the stations were built on the cheap and functional like the Victoria line, they're really showing their age now.
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Post by M1104 on Jul 25, 2023 10:21:34 GMT
Would that not of pushed the overall project up in cost though? At Hatton Cross (and Hounslow West to a lesser extent) you can really feel how the stations were built on the cheap and functional like the Victoria line, they're really showing their age now. I believe the cut and cover tunnelling along that section was to enable the Piccadilly Line to cross over the river Crane rather than under it. Incidentally it's one of my favourite sections of the Underground, especially when the trains used to generally go alot faster over that incline.
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Post by M1104 on Jul 25, 2023 10:22:17 GMT
I believe the discussion is based on what could have happened from the 1960s when the Heathrow extension was then officially approved. If the District Line was the one to have been extended the trains may've then been airport spec'd C or D stock carriages if not a different type altogether. Would that not of pushed the overall project up in cost though? Yes
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Post by Dstock7080 on Jul 25, 2023 10:42:14 GMT
Incidentally it's one of my favourite sections of the Underground, especially when the trains used to generally go alot faster over that incline. Unfortunately westbound signal WW11 had a timer added after trains were regularly passing it at danger because of the increased speed!
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Post by southlondon413 on Jul 25, 2023 10:47:14 GMT
Incidentally it's one of my favourite sections of the Underground, especially when the trains used to generally go alot faster over that incline. Unfortunately westbound signal WW11 had a timer added after trains were regularly passing it at danger because of the increased speed! I must has slept through WW3-10 😂
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Post by capitalomnibus on Jul 26, 2023 0:11:14 GMT
Incidentally it's one of my favourite sections of the Underground, especially when the trains used to generally go alot faster over that incline. Unfortunately westbound signal WW11 had a timer added after trains were regularly passing it at danger because of the increased speed! What does that timer do? Does it hold back trains at the traffic lights longer.
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Post by Dstock7080 on Jul 26, 2023 4:14:20 GMT
What does that timer do? Does it hold back trains at the traffic lights longer. It holds the previous signal (and warning repeater) at danger until the speed of the train has been reduced at the brow of the incline, thus checking down the speed and hopefully preventing a SPAD.
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Post by M1104 on Jul 26, 2023 11:01:21 GMT
What does that timer do? Does it hold back trains at the traffic lights longer. It holds the previous signal (and warning repeater) at danger until the speed of the train has been reduced at the brow of the incline, thus checking down the speed and hopefully preventing a SPAD. Incidentally what is the reduced incline speed now and what was it before?
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