How many times are you going to ask the same question? Why can't you accept it is a joint effort between Network Rail and Avanti?
I’d like to see a 142 attempt the run
ISn't the plan to allow speeds over 125mph on suitable sections of track once a decent in-cab signalling system is installed - such as ETCS? In cab sigalling was planned for the WCML but scrapped to keep costs down. Even then we don't know if a Pendolino running to the originally proposed speed profile up to 140mph could or would have been faster than the APT.
A 397 would probably disintegrate if it reached 125.
Just becuase ETCS is installed doesn't mean the infrastructure is capable for 140mph, I think you put it best:
They've been tested to (I believe it was recorded as) 139mph as part of the necessary 10% overspeed for type certification.
Nobody said it is, but even if it is, the UK industry has agreed in-cab signalling is a must. Saying that, I think the flashing green aspects still exist on the ECML - designed for Class 91 140mph running and the only time 125mph+ running on the ECML was allowed without in-cab signalling. Probably the track is no longer maintained to a standard that would allow it in daily use as back in the 1980's.
Flashing Greens for officially only ever for pre-authorised testing at 125mph+ though, it was never intended to be a means to permit 140mph without full cab signalling.
Its still planned for ETCS, just not as part of the original WCRM. It also doesn't mean you are getting 140mph either.
It's not unusual for trains to have faster design speeds than actual service speeds (Frecciarossa 1000 as a prime example with 400km/h capability but 300km/h service running) and 125mph is pretty standard as far as I know. While it is regrettable that we were never able to get Pendolinos to their max design speed in service I wouldn't exactly call it a mockery. European Pendolinos often fall short as well. All things considered I think we squeeze the most we can out of the WCML, especially with this record attempt.
I'm with you on that bit; how HS2 has been handled is actually a national embarrassment. However I wouldn't exactly point to China as a shining example simply because the government owns all land and it's much easier to get those kind of projects done, along with being more of a status symbol for them rather than a pragmatic piece of infrastructure. I think comparing to our European neighbours would be more appropriate, particularly Spain given their mastery of high-speed rail since the 1990s.
APT-P was designed for 155mph though, it was also more powerful than a 390.
Didn't APT offer 9 degrees of body tilt which may have allowed higher speeds in some bends than the Pendolino's 8 degrees?
I'm fairly certain that while it was 9 originally, it was reduced to 8 after the originally reported 'tilt sickness'.
Originally yes, it completely cancelled out the sensation of taking a bend. Further study led to it being determined that allowing a slight amount of the cornering to be felt, meant the brain was no longer "confused" by seeing something it couldn't feel.
As many times as I want, it’s a forum
Well, September historically has been quite a month for official travel time records, so hopefully a good idea.
At the time of the previous run it was stated that they were exploring the possibility for a return pair of limited stop services. (Preston & Carlisle only.)As many times as I want, it’s a forum
At the end of it, what is the benefit of a ‘record breaking run’ to the fare paying passenger? Are Avanti (or whoever follows) going to do a regular time tabled non stop service between London-Glasgow? I very much doubt it.
Does this actually have a realistic chance of happening though? I remember when Virgin scrapped the 16:30 service that called only at Preston to relieve capacity on the 16:33 that followed.
From what I remember, the original intention was for the amount of tilt to equally compensate for the g force. But the issue was that while you sat thinking you were on a straight bit of track, you looked out of the window and saw the world at some funny angle and that caused a feeling of nausea because the eyes and the other senses were not in sync. Reducing the amount of tilt slightly caused the body to experience a bit more g-force that related to what you were actually seeing.
How likely are the Norwich 90 services to return, and, leading on from that, have any other mainlines in the UK had record attempts in recent years?
2021 run was 83 mins to Crewe, 1h52.5 to Preston, Carlisle in 2h48. The last stretch - Carlisle pass to Glasgow stop in 65mins 19s was slower than some service runs start to stop, and based on recent runs suggests a loss of 1.5 mins. I'm convinced running at 1-2mph over all the posted limits would have saved an additional minute or two.
There are some Norwich in 93 trains - possibly 92. But usually only 1 each day. Early morning to London and evening return.
Ni93 is still done on Saturdays. Around 5mins longer SX.
It quite often completes some sections a fair bit quicker than scheduled. So overall running time less than 90 min.
I doubt it since the London to Norwich services only call at stations served by other GA trains.
Both times I’ve worked 9P58 I’ve completed the journey in 91minutes. Would have been under 90 if I annoyingly didn’t have to wait departure time from Diss and even quicker had the waiting time at Ipswich not been 4 minutes
You trying to put yourself in the frame as co-driver for the next Avanti attempt?Both times I’ve worked 9P58 I’ve completed the journey in 91minutes. Would have been under 90 if I annoyingly didn’t have to wait departure time from Diss and even quicker had the waiting time at Ipswich not been 4 minutes
Can‘t speak for 9P23 up road as that’s not a Norwich job.
