43096
On Moderation
- Joined
- 23 Nov 2015
- Messages
- 15,302
Fairly sure the AT300s can only do 110mph on diesel, might even be only 100mph. Not sure about raising pantographs on the move but I can't imagine Network Rail would be too happy with it, too much risk of it going wrong and ripping the wires down.
The diversionary routes might only be 90mph but as the mainline isn't likely to be electrified north of Kettering during the next franchise not having 125mph capability would be an issue.
It's worse than that. The knitting south of Bedford is only fit for 100mph currently and would be expensive to upgrade and would presumably divert resources from the new wiring projects.
125mph diesels are required and AT300 would need a lot of engines to meet that (probably 7 of 9 cars). Once you get above 5 engines it becomes expensive in terms of maintenance of that many engines, such that separate loco/power car is better value. So what price upgraded HSTs or 68+Mark 5 (125mph is an option on 68s according to Stadler)?