craigybagel
Established Member
- Joined
- 25 Oct 2012
- Messages
- 5,130
I've always been pleased to see one turn up on my train when I'm in the Wales and borders area, I find the interiors very pleasant and comfortable as long as they're not overcrowded.
It's a pity some of the two car sets couldn't have stayed on as the Heart of Wales fleet rather than keeping the even older (and much more cramped) 153s, but I assume the hydraulic transmission and/or gearing would be unsuitable for a low speed service with lots of stops.
I assume this comment was made based on the issues 170s had when used on similar services - allegedly they weren't terribly efficient and it required extra maintenance to keep them going.153s have hydraulic transmission too.
Personally I reckon 175s would have faired better on the HOWL. They change into direct drive at a lower speed than 170s to (~62mph in full power in notch 4, which is too high for the HOWL, but it's ~ 57mph in notch 3 and ~52mph in notch 2. HOWL is varies between 50 and 60mph, mostly at 55mph. It has has the higher speed runs at either end to shake out the cobwebs - 75mph between Llanelli and Swansea and 90mph between Craven Arms and Shrewsbury.
I think the real deal breaker for keeping them on HOWL is the fact you wouldn't need enough for the whole fleet, so you'd end up with an awkward microfleet situation - which is not ideal, especially with a fleet that as the recent issues have shown, requires careful handling and maintenance.