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I missed that. Are you sure?

You obviously don't know the layout of Marylebone. I very much doubt that there will be any objections. There is already a brick wall and there is no view to spoil. As for blocking fresh air, there isn't any. I think it is quite likely to happen.

http://www.acoustiblok.co.uk/wp/wp-content/uploads/2016/01/acoustifencesoundtransmissionreport.pdf This "sounds" as if it might be effective.

najaB and robbeach, you've gone far too technical for me. Back to our problems, please. What would be practical in our situation, please? Assume that funding was available. I don't think that trying to use noise cancellation product in each apartment near the station will work for us...

Thanks najaB. I missed that. Certainly will pursue this line.

Thank you all for putting me straight on all the theoretical possibilities I had in mind. Looks as if we're lumbered with very little improvement on what we've got. I'll let the residents know and see what they make of it all. I suspect that those most affected will be really, really...

Wikepedia "This is effectively a diesel locomotive with auxiliary electric motors (or connections to the existing traction motors), usually operating from 750 V DC third rail where non-electric traction is banned (e.g. EMD FL9, GE Genesis P32AC-DM, EMD DM30AC). The primary function for these...

Not in his case. You are talking middle of a densly poplated area. The view is the station. I, myself, love watching the movement of the trains, passengers and staff. An improved acoustic barrier might well absorb some of the low level vibration; a great help. Unfortunately we are looking...

DRS have Class 88s on their books. Am I totally wrong, but isn't that the type of train about which I conjectured? When the current leasing agreement for the 68s comes to an end (2021) couldn't the new leasing contract be for these 88s, or some alternative loco in the electro-diesel sector...

An improvement and extension of the current, rather meagre, acoustic barrier is something the residents will achieve. Though I'm not sure whether this is the responsibility of the franchisee or Network Rail. The mitigation or elimination of the effects of diesel pollution in London is the...

Probably because I am, on behalf of the locals at Marylebone. Clutching at straws. Now that you've all (well mostly) been helpful, I understand the procedures and restrictions a little better, let me look at the long term and seek your advice (or maybe I should start a new thread. Don't...

Can you conceive of any way that the downtime could be maximised. Do you think there is any way that the Start Sequence could be tweaked so that anything not related to the above could be done first and the actual engine start up took place a little further into the sequence, say 10 minutes...

Would I be right in saying that because it can take up to 10 minutes for the pressure to build, that is the reason that it has to idle for at least that long? In other words, even if it is up to full in 2 minutes, it still has to run the 10 minutes because you don't know how long it's going...

Terrific information. So at that stage the engine is off and caused no nuisance. From experience that's usually about 2 minutes after arrival. More if someone stops the driver for a chat, I understand that. What is the start up procedure, please? Sorry if means a lot of typing but I would...

There isn't. But I am told it wouldn't help as they have an auxilliary power unit in the DVT which does the job.

For clarity. About 2 minutes for the driver to reach the cab, 30 seconds later the engine shuts down and the driver leaves a cab within another minute.

Those that do shut down do so in under 30secs. from the driver reaching the cab. Usually under 2 minutes. That is what happens every time there is a shut down. It's the restart time that is long. Any ideas how that can be shortened? For instance, could not any prep work which can be done without...

We shall, and it will be. We need something short or medium term, too.

https://www.london.gov.uk/sites/default/files/gla_migrate_files_destination/Driving%20Away%20from%20Diesel%20final%20report_0.pdf Page 10 Para 1.8 Chart 3

Did you realise that trains are responsible for 8% of the NOx emissions in London? That is the same percentage as all the TFL buses and 4 times more than taxis. One would hope that this would receive as much attention, but is currently being ignored.