Peter Mugridge
Veteran Member
The fastest 3rd rail unit was a 442 that went 108mph, so especially for new gen emu's it shouldn't be that difficult.
Officially, yes, but unofficially the REP / TC sets could easily beat that. I've got a photo somewhere of a REP speedo jammed against the stop and it certainly carried on accelerating from there for a bit.
On another occasion I was on one that did Southampton Central to Waterloo non stop in under an hour - including waiting five minutes or so outside Waterloo for a platform.
Of course, in those days there were far fewer trains on the line each hour so the power supply was a bit more robust and the paths were more flexible...