Basher
Member
- Joined
- 6 Oct 2017
- Messages
- 333
On the 6.30 from Darlington in coach k. It's shaking like nobody's business, the coffee cup has waves on it. Is this a common problem with this class?
Yes. The ride quality has been appalling from day one. Hunting of the bogies is commonplace on normal track and they lose the plot completely going over points and crossings.On the 6.30 from Darlington in coach k. It's shaking like nobody's business, the coffee cup has waves on it. Is this a common problem with this class?
Where were you seated? A continuous shaking? Or shaking om a certain part of the routeOn the 6.30 from Darlington in coach k. It's shaking like nobody's business, the coffee cup has waves on it. Is this a common problem with this class?
Ride quality is poor, but it shouldn’t be shaking too badly.On the 6.30 from Darlington in coach k. It's shaking like nobody's business, the coffee cup has waves on it. Is this a common problem with this class?
Which carriages on which of the various IET classes are these please?Were you sat in one of the coaches with the lightweight bogies?
4th and 6th vehicles in the 9 car variants:Which carriages on which of the various IET classes are these please?
Were you sat at a table seat or a airline? If you were at a airline then the seat in front shakes about and makes it seem worse. I don't think it was as bad on the Mallards so perhaps the seats were more rigid on them.On the 6.30 from Darlington in coach k. It's shaking like nobody's business, the coffee cup has waves on it. Is this a common problem with this class?
By Mallards do you mean the Mk4 sets. If so then the reason the seats didn’t shake on these was that they weren’t as prone to bogie hunting as the class 800.Were you sat at a table seat or a airline? If you were at a airline then the seat in front shakes about and makes it seem worse. I don't think it was as bad on the Mallards so perhaps the seats were more rigid on them.
Yes, i meant Mk4 sets, and HST's while were on the subject. So nothing to do with flimsier seats then.By Mallards do you mean the Mk4 sets. If so then the reason the seats didn’t shake on these was that they weren’t as prone to bogie hunting as the class 800.
Bogie hunting is when the bogie becomes unstable and instead of riding centrally along the rail surface the wheelsets move along the track with alternate wheel flanges contacting the rail and then moving in the opposite direction until the other wheel flanges contact the other rail. This motion continues until the bogie becomes stable again. This causes the vehicle body to shake.What is 'bogie hunting'?
Bogie hunting is when the bogie becomes unstable and instead of riding centrally along the rail surface the wheelsets move along the track with alternate wheel flanges contacting the rail and then moving in the opposite direction until the other wheel flanges contact the other rail. This motion continues until the bogie becomes stable again. This causes the vehicle body to shake.
This sounds like what happens with 222s, with its lightweight bogies. The whole carriage rattles and shakes for a short while before returning back to ‘normal’. It’s most noticeable at high speeds.Bogie hunting is when the bogie becomes unstable and instead of riding centrally along the rail surface the wheelsets move along the track with alternate wheel flanges contacting the rail and then moving in the opposite direction until the other wheel flanges contact the other rail. This motion continues until the bogie becomes stable again. This causes the vehicle body to shake.
Yes. Class 220 and 222 hunt at high speed.This sounds like what happens with 222s, with its lightweight bogies. The whole carriage rattles and shakes for a short while before returning back to ‘normal’. It’s most noticeable at high speeds.
The wheels do not lift under bogie hunting as the contact between the flange and rail returns the wheel in the opposite direction. The flanges are doing the job they were intended to do.Thanks. How much vertical tolerance is there before the flanges are no longer guided by the track? Presumably the airlifted flange in 'bogie hunting' is still guided by the track.
They don'r have to wear masks.He walk through a few times so he would know. Do not think he was interested lots of people not waring masks either.
Thank you; I can see the difference in that easily.4th and 6th vehicles in the 9 car variants:
As well he shouldn’t be. It’s neither the law nor a requirement of LNER to wear one.He walk through a few times so he would know. Do not think he was interested lots of people not waring masks either.
The taxpayer I'd imagine, it's pretty obvious that the high speed sections of both the ECML and GWR aren't maintained to the standards that are specified.Shades of the "Midland Pullman" sets, built in the expectation that UK track rode like Swiss track?
Oh dear! This could get expensive for someone!
Thank you; I can see the difference in that easily.
Continuously coach KWhere were you seated? A continuous shaking? Or shaking om a certain part of the route
Maybe an email to LNERs customer services team might be more appropriate with the details of what you experienced, where you sat, what you felt etc (maybe even the unit number) so that they can pass it on to the fitters?Continuously coach K
Travelled back from Kings Cross late last night in coach L, the ride was poor. These Azumas, in my view are not as good as the HST or the class 91s. Funny a class 91 came into Kings Cross while I was waiting.
Guess which carriage(s) I'm going to aiming at to sit in from now on...?Not a problem. I personally feel that some of the rough riding may well be down to Hitachi’s own design - the 385s are remarkably similar. The traditional outside frame bogies ride ok, the vehicles with the inside frame bogies (the intermediate vehicles on a 385) ride terribly.
Or just delete it.Maybe an email to LNERs customer services team might be more appropriate with the details of what you experienced, where you sat, what you felt etc (maybe even the unit number) so that they can pass it on to the fitters?
Does this cause extra wear and tear?The wheels do not lift under bogie hunting as the contact between the flange and rail returns the wheel in the opposite direction. The flanges are doing the job they were intended to do.
YesOr just delete it.
Does this cause extra wear and tear?