As Sheffield isn't due until 2030, most probably itself delayed until nearer 2035, that's a very depressing prospect
OHLE-battery hybrid could work in order to get rid of the diesel engines. But that’s venturing off topic.
Nevertheless, clearly there is something fundamentally wrong if 810001 has suffered 2 engine failures. 132 engines will be fitted across the 810 fleet; so hundreds of replacement engines will be needed at this rate.
Doing some fag packet maths, 2 engines have been replaced over the course of a year’s worth of testing:
- 2 replacement engines needed for 1 unit over the course of a year.
- 2 engines per unit x 33 units = 66 replacement engines per year.
- 35 serviceable years x 66 replacement engines per year = 2310 replacement engines over the course of the fleet’s life!!
That’s also a very depressing prospect! Obviously 2310 replacement engines won’t be the true number because, presumably, testing will become more reliable once teething issues have been ironed out and they may ditch the engines in favour of batteries mid life; but these engine replacements so early on are a very worrying development.