Noise Levels

[mattb]

Hi All,
I was in London on Friday (28/10/2017), and decided to go and check out a section of the Jubilee Line between Baker Street and St Johns Wood. And I must say that the amount of noise produced on the run through this section is absolutely ear splitting. (I overheard a number of passengers discussing the terrible racket once it died away). 

Was wondering if there is a known cause of this, as it has been going on for some months. It is notable in the Northbound Direction (and the speed seemed somewhat constrained too), but it is crippling on the Southbound - and it ensues for much longer right into the platform. I must add, in the Northbound direction, the noise can be heard from the platform for well over a mile as the train exits the station towards St Johns Wood.

Made a number of journeys on different trains as I became increasingly perplexed by this, and all of the trains seemed to do it. After all, there are no significant bends or curves to cause it either.

I was just after hearing other people's views on this one - in terms of knowledge in the engineering field here?

Many Thanks
- my apologies for an extensive read!
Matt

[superteacher]

Probably a result of rail grinding. More info in the thread below:

districtdavesforum.co.uk/thread/27845/noise-wanstead-leytonstone?page=3

[roybadami]

I used that section of line this morning and I noticed that in the Northbound direction the train travelled much slower than normal between Baker Street and just beyond the noisy section of track. Was that some random slow running, or a TSR to reduce the noise? I don't recall whether we slowed down on the Southbound journey today, but we didn't get the ear-splitting screech in either direction. (And I'm sure the noises were as bad as ever - at least in one direction - only a couple of weeks ago when I was last in the area.)

roy

[londonstuff]

I go on the stretch between Baker and SJW all the time. The noise does vary: sometimes it’s absolutely ear-splittingly bad. Other times it’s not too bad at all - normally when I’m with someone else and have told them about it. A speed restriction of some sorts wouldn’t surprise me at all.

[rincew1nd]

Presumably the variation is linked to the amount of wheel-wear on the train.

[goldenarrow]

They must be really trying to sweat the assets regarding the track, it certainly looks like bull head (or just well worn track) SB into Baker St over no.3 points and NB to St. Johns over no.11 points.