chargesmith
Member
I know I've said this 3 times now but it looks like a 398 will actually be out tomorrow:
Would be good if it does pop out so I can hopefully give one a tryI know I've said this 3 times now but it looks like a 398 will actually be out tomorrow:
should be 31Would be good if it does pop out so I can hopefully give one a try
Yeah 031 is on the diagram today. First Sunday service by a 398.should be 31
Yup, first passenger turns for that one. Another for the list.398023 out in service for the first time today I believe, starting with 3B00 Taff Dep - CDQ, then 2B00 0632 CDQ-CDB. Diagram TW302.
https://www.realtimetrains.co.uk/service/gb-nr:G39044/2026-09-08/detailed#allox_id=0
22 was soon fixed!Looks like the 3x 398s out today according to RTT are
398022
023
031
398023 out in service for the first time today I believe, starting with 3B00 Taff Dep - CDQ, then 2B00 0632 CDQ-CDB. Diagram TW302.
https://www.realtimetrains.co.uk/service/gb-nr:G39044/2026-09-08/detailed#allox_id=0
Thanks for letting us know bothYup, first passenger turns for that one. Another for the list.

All looks OK at the moment but we now have 022, 029 and 030 out so it looks like two units were swapped. Appears to have happened at different times so likely two separate issues.Not sure if I'm reading this right but just looking through RTT then, all the units which left this morning for service have been pulled and are in the process of being swapped out or have stopped moving, is there a wider issue?
25 398s yet to be in service is a joke when they said 2023! For all the ex moaning and complaining how bad the 398s are this is not a good look! Less than a third in testing is bad! However, they do have no choice and we need to see testing of 3+3 units for peak times that is the game changer! Sort that and we have half a chance!
Has the ORR approved interoperability with pairs yet? That will come first.What is the next milestone? Is it working in tandem?
Todays 398 selection:
398017
018
031
This could happen as early as next week:Passenger service over network rail infrastructure I would say is next.
That forum member made some unbelievably outlandish claims, completely destroying any credibility. These units seem to be being introduced carefully, which given the recent history of new trains seems entirely sensible. Take a look at the 810 thread if you want a real horror storyThese three units have been out before, so it's still only 11 out of 36 units that have seen public service.
I think it's now safe to say that TfW's very public announcement last spring that the 398s would be introduced on the Treherbert, Aberdare and Merthyr lines "later this summer" was overoptimistic. A forum member who said at the time that the timescale was unachievable, and that it would more likely be 2027, was vilified for saying so.
There is clearly something very wrong with these units, and with the entire project, and I can't help feeling that there is a wilful blindness on this forum to those issues and a refusal to even discuss them. That, to me, would be a much more interesting discussion than cheering every time one more unit manages to make its way out of the depot.
I'd really like to know, for example, why two of the three units that were out in public service yesterday were apparently pulled during the day and replaced with other units, but anyone with inside knowledge that is not upbeat and positive gets treated very badly here.
The careful approach likely also explains why units are being taken out of service so frequently, especially as whenever it happens the same units are often out again the next day.That forum member made some unbelievably outlandish claims, completely destroying any credibility. These units seem to be being introduced carefully, which given the recent history of new trains seems entirely sensible. Take a look at the 810 thread if you want a real horror story
+Yeah 031 is on the diagram today. First Sunday service by a 398.
+398023 out in service for the first time today I believe, starting with 3B00 Taff Dep - CDQ, then 2B00 0632 CDQ-CDB. Diagram TW302.
https://www.realtimetrains.co.uk/service/gb-nr:G39044/2026-09-08/detailed#allox_id=0
Thanks all. List duly updated.Yup, first passenger turns for that one. Another for the list.
I feel a list coming on :-
398001
398002
398003
398004
398005
398006
398007
398008
398009
398010
398011 Testing from 15/08/2026
398012
398013 Testing from 19/08/2026
398014
398015
398016 Testing
398017 In service on 28/07/2026 6th, two in service 03/08/2026 (398017 and 398029 not coupled)
398018 In service on 10/08/2026 8th, Testing (multi ?) before
398019 Seen at Merthyr on 22/08/2026, presumably testing ?.
398020 Testing (multi)
398021 In Service on 18/08/2026 9th
398022 In service on 03/07/2026 4th (all day 23/07/2026)
398023 In service on 08/09/2026 11th
398024 In service on 25/06/2026 3rd
398025.In service on 02/09/2026 10th
398026 Testing from 18/08/2026
398027
398028 In service on 23/06/2026 1st
398029 In service on 31/07/2026 7th, also did first weekend service (Saturday 01/08/2026), two in service 03/08/2026 (398017 and 398029 not coupled)
398030 In service on 14/07/2026 5th
398031 In service on 24/06/2026 2nd
398032.Old Dalby
398033
398034.Delivered on 14/05/2026 ?
398035.Not yet delivered
398036.Not yet delivered
First day with two in service 03/08/2026 017 & 029.
First day with three in service 19/08/2028 017, 029 & 031.
First rescue of a 398 (022) by two other 398s (possibly T&T as reversal required) 01-02/09/2026 - successful.
. . . 398031 leading to Taffs Well with 398028 on the rear.
First Sunday service using a 398 06/09/2026 398031.
That is all the past dates (before 01/08/2026) I can unearth.
Below is a list of 398s in the order they entered service (I have decided to make life more complicated !).
Order, Unit, date, (days elapsed)
01 398028 23/06/2026
02 398031 24/06/2026 (1)
03 398024 25/06/2026 (1)
04 398022 03/07/2026 (8)
05 398030 14/07/2026 (11)
. . . Milestone : First all day service on 23/07/2026 (398022)
06 398017 28/07/2026 (14)
07 398029 31/07/2026 (3), also did first weekend service (Saturday 01/08/2026), two in service 03/08/2026 (398017 and 398029 not coupled)
. . . Milestone : First day with two in service 03/08/2026 (398017 and 398029 not coupled)
08 398018 10/08/2026 (10)
09 398021 18/08/2026 (8)
. . . Milestone : First day with three in service 19/08/2028 (398017, 398029 & 398031).
10 398025 02/09/2026 (15)
. . . Milestone : First use on a Sunday 06/09/2026 (398031)
11 398023 08/09/2026 (6)
Surely a new low in the railway making recovery of a failed train farcically difficult!It was done with 2 units. One front, one rear and 5mph max. Not sure if the 5mph max is necessary for all rescues or if there was something specific with this one for the speed restriction. There was a long list of faults displayed that couldn’t be rectified so hard to know.
How would you have recovered the failed unit from the Queen Street bay platform?Surely a new low in the railway making recovery of a failed train farcically difficult!
I think it's now safe to say that TfW's very public announcement last spring that the 398s would be introduced on the Treherbert, Aberdare and Merthyr lines "later this summer" was overoptimistic. A forum member who said at the time that the timescale was unachievable, and that it would more likely be 2027, was vilified for saying so.
You could question the reliability of any TOCs announcements about introducing a new fleet over the last 10 years. It was hardly a master stroke suggesting that there were likely to be issues here. It was the other posts, many of which were demonstrably inaccurate, that got the poster "vilified".That forum member made some unbelievably outlandish claims, completely destroying any credibility. These units seem to be being introduced carefully, which given the recent history of new trains seems entirely sensible. Take a look at the 810 thread if you want a real horror story
As painful as it is, it's hardly the first time a broken train has required both top&tailing and a 5mph speed limit. If the nature of the fault means the brakes can't be relied upon, then you either do that or load it on the back of a truck.Surely a new low in the railway making recovery of a failed train farcically difficult!
Amongst the many things that forum member said, was, in Post 1559, after a list of things that were apparently wrong:-These three units have been out before, so it's still only 11 out of 36 units that have seen public service.
I think it's now safe to say that TfW's very public announcement last spring that the 398s would be introduced on the Treherbert, Aberdare and Merthyr lines "later this summer" was overoptimistic. A forum member who said at the time that the timescale was unachievable, and that it would more likely be 2027, was vilified for saying so.
I’m sorry to be repeatedly negative, but I can’t see these things happening. They need to cut the loss and look at alternatives.
These three units have been out before, so it's still only 11 out of 36 units that have seen public service.
There is clearly something very wrong with these units, and with the entire project.