TractiveEffort
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A few of the ATP parameters had to be altered to cope with the improved acceleration and braking of the 800’s. Still some more to come.
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Class 800 upgrades to address performance and reliability issues
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Railperf
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I was thinking more of platform entry speeds such as Reading where you are running late and want to make up time, but the platform starter still on red plus ATP enforcing a crawl along the platform compared to if the signal were y yy or g
irish_rail
Established Member
Yes still a crawl into reading on the up on platforms 10 and 11, very frustrating really especially when coming in over the flyover
Is there any particular reason why pat. 7 is so restricted and not the others?
At a guess, is it due to the overlaps into 1/2/3 and also the festival to / from 8?
in general a red light where ever it is should be treated as a brick wall or a buffer stop
the average approach should be perhaps 25-30% off brake capacity at least in the last half with perhaps 50- 70% before that
a good driver will always be in charge [but make the odd mistake ] but because he knows the stock the route and the track conditions will make allowances and have a bit off recovery plus a bit more
in other words the worse that can happen is a rough stop well short off the signal as thats his ground
the average approach should be perhaps 25-30% off brake capacity at least in the last half with perhaps 50- 70% before that
a good driver will always be in charge [but make the odd mistake ] but because he knows the stock the route and the track conditions will make allowances and have a bit off recovery plus a bit more
in other words the worse that can happen is a rough stop well short off the signal as thats his ground
Pete_uk
Established Member
Is it me or have the brakes quietened down a bit? There was hardly any screeching on the one I got on yesterday morning.
Railperf
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Does the ATP update between balises. Or do you have to pass the platform starting signal at green for it to update?
irish_rail
Established Member
A bit of both really depending on the location. Some signals have infill loops well before the signal whilst others need to be passed before ATP "steps up"
irish_rail
Established Member
Exactly as you suspected, it's due to the short overlap if the signal was spad'd . Still massive overkill tho in my humble opinion. Often get very strange looks from bemused passengers crawling into 7, especially in HST days.
Whilst waiting for my Class 800 at Reading today I was reflecting on how I hadn't seen one on diesel only for a while and therefore assumed that Hitachi had sorted the problem. Then of course guess what - my train turns up in diesel only mode!
Thanks for confirming. It is afterall difficult to have a route set off the platform to forward route, if the train is stopping for any length of time.
It does seem rather restrictive, given the operating characteristics and pure ability of the new rollingstock.
'safety concious management' at work, whome have probably never been in a driving cab in thier life perhaps.
Restrictive overlaps are all over the country and are an integral part of the signalling system. Our one (of many) has a 50mph speed limit through one platform, a very short set of points connecting the adjacent platform, and a 90mph through platform all connected by the same overlap.
One of our restrictive overlaps had a sideswipe some years back.
Through / line speeds are Al well and good, but what are the approach speeds for the signals when restricted?
Naturally the location of the relative equipment is also important.
It is typically coupled with approach control. You get checked down to almost stopping before the signal clears, then you approach the signal protecting the overlap. You are then restricted to 20mph for the signal being held to Red. If it steps up then your good up to linespeed. It can be frustrating at times but you are usually given enough allowance to still be on time.
Personally, I see it as a positive use for approach control.
I don't sign this location so I'd leave the specifics of that to others.
Was on the 07:48 Paignton - Paddington this morning but we terminated at Bristol TM due to a "train fault". Anyone know what the problem was? Seemed to be running OK. Automated announcements onboard and reservations were still showing as running to Paddington and coach order on station PIS was the reverse of how it was actually formed.
samuelmorris
Established Member
RTT shows attribution code M0 (Cab safety system fault)
Meaning that particular unit is able to safely run either direction, west of Bristol Temple Meads only.
Did said unit disappear off to stoke Gifford? Or did it return westward?
Why not advertise it as a bristol terminator before hand, if they did know about it in advance this morning?
Ahh, thanks for clarifying.
Regarding the Class 80x PIS, one of the major shortcomings of what is mostly a pretty flexible system is that once a train has been loaded into the system, you can't then alter it for an early termination en-route. You can use a generic headcode if one exists for the revised termination point, or you can run without a code and lose seat reservation information. A generic headcode from the east ending at Bristol won't exist, so the only options would be to keep the original headcode with seat reservations loaded, or remove the headcode meaning manually selecting the doors at each station and have no screens, reservations or announcements. Usually it's best to keep it in the system and make manual announcements where necessary.
A software update allowing the final station stop to be removed, as you can do with intermediate stops, would be a good thing.
A software update allowing the final station stop to be removed, as you can do with intermediate stops, would be a good thing.
Mikey C
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Scorching hot weather this week. A good test of any overheating issues...
father_jack
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1415 Paddington to Cardiff declared failure at Bristol Parkway, overheating, set went to Stoke Gifford to cool off. 1715 Paddington to Carmarthen had no set due to 1455 Cardiff to Paddington having to go to North Pole needing a drink of water and a rest. 1900 and 1912 Paddington to Bristol TM cancelled this evening, "unit faults".....
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I was on 1B42 , the 14.15 Paddington - Cardiff. It didn’t help that the pair (800020 & 026) are on a diesel only restriction so would have been on diesel all the way from Paddington. I joined at Reading and it was noticeable that it was very sluggish between there and Didcot. Indeed by Didcot the train was 8 late and the air/con had noticeably died down and the seat reservation lights were now all unlit. When I left at Didcot even the Mrs said it sounded “wheezy”.
I said to her that it probably wouldn’t make it past Bristol Parkway and would end up packed off towards Stoke Gifford!
BTW the trolley came through ok
Siemens Staines
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1752 Paddington to Worcester and its return were also cancelled "due to a fault on this train"
Siemens Staines
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Today's little list of alterations on GWR journeycheck;
06:42 Hereford to London Paddington due 09:47 will be cancelled.
This is due to a shortage of trains because of extra safety inspections.
07:59 Swansea to London Paddington due 11:00 will be cancelled.
This is due to a broken down train.
08:25 Worcester Foregate Street to London Paddington due 10:57 will be cancelled.
This is due to a fault on this train.
09:01 Oxford to London Paddington due 09:59 will be cancelled.
This is due to a broken down train.
10:56 Cardiff Central to London Paddington due 13:01 will be cancelled.
This is due to a shortage of trains because of extra safety inspections.
11:15 London Paddington to Cardiff Central due 13:22 will be cancelled.
This is due to a shortage of trains because of extra safety inspections.
12:15 London Paddington to Cardiff Central due 14:21 will be cancelled.
This is due to a shortage of trains because of extra safety inspections.
13:15 London Paddington to Cardiff Central due 15:23 will be cancelled.
This is due to more trains than usual needing repairs at the same time.
14:15 London Paddington to Cardiff Central due 16:22 will be cancelled.
This is due to more trains than usual needing repairs at the same time.
15:15 London Paddington to Cardiff Central due 17:21 will be cancelled.
This is due to more trains than usual needing repairs at the same time.
05:05 Penzance to London Paddington due 10:02
11:03 London Paddington to Plymouth due 14:22
15:00 Plymouth to London Paddington due 18:16
19:03 London Paddington to Plymouth due 22:22
This is due to a fault on this train.
Will be formed of 5 coaches instead of 9.
06:47 Penzance to London Paddington due 12:21
13:03 London Paddington to Penzance due 18:30
This is due to a fault on this train.
Will be formed of 5 coaches instead of 10.
10:49 Penzance to London Paddington due 16:21
17:03 London Paddington to Penzance due 22:28
This is due to a fault on this train.
Will be formed of 5 coaches instead of 10.
07:36 London Paddington to Cheltenham Spa due 09:30
10:47 Cheltenham Spa to London Paddington due 12:44
13:36 London Paddington to Cheltenham Spa due 15:30
16:36 Cheltenham Spa to London Paddington due 18:38
19:15 London Paddington to Swansea due 22:20
This is due to a fault on this train.
Will be formed of 5 coaches instead of 9.
And also from tiger but not on journeycheck;
1A09 TAUNTON PADTON 3 09:10 09:13 09:12 09:14
This train has 5 coaches. Service reported full & standing.
1L46 CRDFCEN PADTON 3 10:58 On time 11:00 On time
This train has 5 coaches.
06:42 Hereford to London Paddington due 09:47 will be cancelled.
This is due to a shortage of trains because of extra safety inspections.
07:59 Swansea to London Paddington due 11:00 will be cancelled.
This is due to a broken down train.
08:25 Worcester Foregate Street to London Paddington due 10:57 will be cancelled.
This is due to a fault on this train.
09:01 Oxford to London Paddington due 09:59 will be cancelled.
This is due to a broken down train.
10:56 Cardiff Central to London Paddington due 13:01 will be cancelled.
This is due to a shortage of trains because of extra safety inspections.
11:15 London Paddington to Cardiff Central due 13:22 will be cancelled.
This is due to a shortage of trains because of extra safety inspections.
12:15 London Paddington to Cardiff Central due 14:21 will be cancelled.
This is due to a shortage of trains because of extra safety inspections.
13:15 London Paddington to Cardiff Central due 15:23 will be cancelled.
This is due to more trains than usual needing repairs at the same time.
14:15 London Paddington to Cardiff Central due 16:22 will be cancelled.
This is due to more trains than usual needing repairs at the same time.
15:15 London Paddington to Cardiff Central due 17:21 will be cancelled.
This is due to more trains than usual needing repairs at the same time.
05:05 Penzance to London Paddington due 10:02
11:03 London Paddington to Plymouth due 14:22
15:00 Plymouth to London Paddington due 18:16
19:03 London Paddington to Plymouth due 22:22
This is due to a fault on this train.
Will be formed of 5 coaches instead of 9.
06:47 Penzance to London Paddington due 12:21
13:03 London Paddington to Penzance due 18:30
This is due to a fault on this train.
Will be formed of 5 coaches instead of 10.
10:49 Penzance to London Paddington due 16:21
17:03 London Paddington to Penzance due 22:28
This is due to a fault on this train.
Will be formed of 5 coaches instead of 10.
07:36 London Paddington to Cheltenham Spa due 09:30
10:47 Cheltenham Spa to London Paddington due 12:44
13:36 London Paddington to Cheltenham Spa due 15:30
16:36 Cheltenham Spa to London Paddington due 18:38
19:15 London Paddington to Swansea due 22:20
This is due to a fault on this train.
Will be formed of 5 coaches instead of 9.
And also from tiger but not on journeycheck;
1A09 TAUNTON PADTON 3 09:10 09:13 09:12 09:14
This train has 5 coaches. Service reported full & standing.
1L46 CRDFCEN PADTON 3 10:58 On time 11:00 On time
This train has 5 coaches.
irish_rail
Established Member
Lost for words!!! What an age we live in!!!!!
43096
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Reported elsewhere that they are 10 sets short today and any units with diesel only restriction must stop by 11am for fear of overheating later.
You can’t make this stuff up. An over priced, poorly spec’d train that doesn’t work. So much for (s)Hitachi’s Japanese levels of reliability.
CptCharlee
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- 31 Jan 2018
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Penzance/Plymouth to Paddington on 5 car set OMG!!! I feel sorry for anyone on those sevices. Horrendous.
The IETs aren't looking good at all right now! At first I thought they were going to be great but my mindset is now how did we accept such a flawed train.
The IETs aren't looking good at all right now! At first I thought they were going to be great but my mindset is now how did we accept such a flawed train.
fgwrich
Established Member
I was just about to post the same. This is pretty inexcusable given that Hitachi has known about, and failed to fix or address the overheating issues they learned about last summer. I suspect eyes will be kept on the West Country sets as well with their prolonged periods of running on Diesel until they pass Newbury. And 5 cars on the Penzance services again
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