I can't see any 158s needed to be retained as they won't be needed, If any fleet would be retained I think it would be the 175's as they look good after there recent refurbs plus they are TFWs youngest units.
Sorry, the bit about 158s being retained is what I thought
should happen (because I think they should have fewer 197s than have been ordered), not what is planned to happen.
I think I'm right in saying that Liverpool-Shrewsbury is an hourly service but that only half the trains will continue on to Cardiff providing a two hourly service.
That was what one of the documents said. Another suggested it would be hourly Cardiff-Shrewsbury with only half the trains continuing to Liverpool.
It appears that a 3 coach 197 with first class areas will lose about 40 standard class seats compared with a 3 coach 175.
A two coach 197 without first class will lose about 20 seats compared with a 2 coach 175, whilst a two coach 197 including first class would only have about 90 standard class seats -- totally inadequate. The people responsible for such ideas must be !!!!****!!!! (censored words)
I think you may have the wrong number of seats for the 175s, unless there are tip-up seats making a big difference. I make it:
- 2-car 175 vs 2-car 197: 197 has 2 fewer seats
- 3-car 175 vs 3-car 197: 197 has 2 more seats
- 3-car 175 vs 1st class 197: 197 has 12 fewer seats (28 fewer if only looking at standard class capacity)
There are no 2-car 197s planned with first class. The seating capacity of the units without first class is therefore
much the same as a 175.
However, the seat-pitch on a 175 is (depending on whether I chose to believe my tape measure or TfW's spin) either 1cm or 2cm greater. The 175 manages to get a toilet in every vehicle too, meaning they are a far better use of space. More ground-level luggage stack capacity on a 2-car 175 than on a 2-car 197 as well I believe (I don't know what luggage stacks exist in the centre car of a 175).
I'm not sure of the capacity of a 158 (I think the number I have may be pre-refurbishment) but I think a 2-car 197 has 18
fewer seats than a 2-car 158.
Yes, lengthening them all by one coach (3 to 4 and 2 to 3) would also be a good solution
No it wouldn't. They would still have worse legroom than a 175 and fewer good view seats than either 158s or 175s. Even more-importantly, they would still be unable to make use of electrification and would still have no toilet in one of the end cars. We need less of them not more. It would solve the capacity problem on the Cambrian (compared to the planned 2-car 197s) and that's the only thing of value that suggestion would acheive.
Specced properly, they can be pretty good. The problem with them is that the TOCs that have ordered them have botched the interior spec incredibly badly.
Their acceleration is impressive, they have nice big windows and generally feel modern and airy inside. Their main problem is the bumpy ride, which I feel can be at least partially put down to the poor choice of seat, in the Northern units.
Big windows? Another element of the botched spec perhaps, but my tape measure found Northern's to be 129.5cm x 76.5cm with 48cm pillars between them. A 175's windows are, I think, 155x65cm with pillars at 35cm while Ian Walmsley's August 2020 column in Modern Railways states that he would set the maximum pillar size at 300mm. I make that 18cm wider pillars than necessary on a 195.
The main problem I find with the Northern and TfW units is that they ordered them with a window layout that could not have any sensible seating layout aligned with it because the window width is not a bay width. WMT proved that CAF do offer a layout which has the windows the same width as a Standard class bay. So it's just unthinking, really.
Depends on what the bay width is. TfW's spec for the 197s is I believe a bay pitch of 180cm. The 196s have MORE windows than TfW and Northern, so presumably the windows are smaller still than the 195's. The seat-pitch on WMT's bays must therefore be really tight to align with windows less than 130cm wide. To align with TfW's 180cm bay pitch you would need much bigger windows. The only train I've measured with windows big enough (actually slightly too big, at 181cm wide) are class 156s. Be aware however that for two rows of airline seats to take up the same space as a 180cm bay (and therefore keep the seats aligned with windows thoughout the carriage) the airline seat pitch would need to be 90cm (significantly better than a 175).
Aren’t the sets with First Class always going to joined to another set between Manchester and Swansea?
That will be an increase in capacity.
Most of them are planned to be used between Manchester and Swansea yes, but 14 units (I think that's how many were ordered with 1st) seems a bit much for just that (which I think would be 9 diagrams). Thus either they are planning to send the 3-car portion through to Milford Haven / Carmarthen (which would be a smaller reduction in capacity west of Swansea than the alternative of 2-car 197 replacing a 3-car 175) or a few 1st class units will appear elsewhere. If the 3-car unit on the Manchesters is the one detached at Swansea, the numbers look about right for all Holyhead-Cardiff workings to have first class (some being LHCS the others being 3-car 197s) though TfW have not confirmed this.