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It was the fitting of regenerative braking that changed the noise. Prior to this, the transition in noise that currently occurs at 20mph used to happen at 5mph or so. All 444s and 450s had it fitted by March 2012.
Funnily enough I actually asked this question over a year ago too, but I then...
Used to live in a flat on the London side of Basingstoke station (from 2007 to 2013 or when I was 3 to when I was 8) and loved watching the trains. In fact I suspect that's how I got into trains!
Thank you. So in this example 'cue waiting for the third train at Earlsfield' can be rewritten as 'that signalled the need to wait for the third train as Earlsfield'?
Quite a oddly specific and random question I know, but increasingly I've been seeing this phrase used in these forums and genuinely don't know and can't work out what it means. Here's an example I've just seen:
Not sure if it happens on other LU lines too, but I've noticed on the Jubilee Line at least, the trains brake more quickly on the underground sections and more slowly on the overground sections. I'm curious as to why?
Yes 444045 is in the paint shop now, just seen a tweet about it. So no more SWT-liveried 444s in service now.
https://x.com/shunterinred/status/1745312366579908811?s=20
You know how the 444s and 450s change sound at 20mph, having watched some videos from 2010, it seems that the speed at which this happens used to be roughly 5mph. Out of interest, why was it changed to 20mph?
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