Hi, was sat on a GWR IET (is that what they're called?) & as it accelerated it had a pretty surprising lateral vibration going on, I'd guess 10Hz or that order of magnitude at least. if it'd been me in a car I'd have assumed flat tire or something & stopped. It disappeared with a minor deacceleration so presumably some speed-related resonance. Should I be concerned/report it?
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GWR IET Lateral vibration
- Thread starter Fivenines
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RailUK Forums
Ride quality is often poor on modern trains these days. There was a thread regarding IETs posted a couple of years ago:
Rough-riding GWR IETs
For various reasons I have been taking jaunts around the Great Western network over the last few days, but had not needed to use services provided by the Class 8xx units until today, and goodness me the ride was notably appalling. In particular, the 1030 from Bristol Temple Meads to London...
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DelW
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There's also a more recent discussion of the problems with IETs, including some posts referencing poor riding, in this thread:
State of GWR’s IETs
I agree. I hate to say it but the carriage ambience is better than the old GWR HSTS with the high backed seats. But the actual seating on IETs needs addressing as with age it has got ALOT worse. There was this idea 5 years ago that the seating would get more comfy with age as more people sat on...
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SouthEastBuses
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IET yes. I would have thought that the vibration would be due to the underfloor diesel engines being operational (assuming that your journey was in diesel mode).
Clarence Yard
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It’s always worth reporting it.
There are a number of wheelset/suspension related issues with these sets.
There are a number of wheelset/suspension related issues with these sets.
WScott
New Member
Was on one of these sets the other week between Paddington - Reading and started to vibrate violently is this normal?
No, depressingly the rough ride on these things seems to be the new normal. I’ve got a few videos I’ve taken that I would upload but they’re too big for this site unfortunately, showing similar rough riding and all the banging of the underfloor mounted equipment. At least the Mk3s never rode this badly, yet to some you’d think they were invented by the devil.
43096
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IET ride is worse - much worse - than a Mark 4, never mind a Mark 3.
That's exactly the same location as I experienced the same thing on Thursday evening (I posted about it in the other IET thread). There must be some combination of speed and track geometry there which makes it so bad in that area
Western 52
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No wonder bits of them are cracking with all that vibration.
Marton
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The ones on the ECML are just the same. When I mentioned in a tweet the response was along the lines of “it’s the rails”.
Travelling south of Darlington the approach to Northallerton is awful. Coffee won’t stay in the cup sometimes
Travelling south of Darlington the approach to Northallerton is awful. Coffee won’t stay in the cup sometimes
It's certainly a bit of track that the trains don't like. It's fair to say that mk4s and HSTs handled it with a bit more grace, but the LNER maintenance team also did loads of work on ride quality, so it might just be that the form of the maintenance contract with Hitachi is preventing them from getting to the same ride quality.
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