WCML Inside Knowledge Required If Possible

[yorkie]

Heres a question, The 390s ride quality isn't best at 125mph, so what is it like at 140mph?

The bogies on 390 EMUs and Mk4s are designed for 140mph, so should ride better at 140mph than at 125mph.

 

[Geezertronic]

Heres a question, The 390s ride quality isn't best at 125mph, so what is it like at 140mph?

Question answered here:

Take it you havent ridden the WCML south of Rugby on a Pendo recently ?? High grade isnt what Id call it, the ride is bloody awful and downright scary in a vestibule.....

It's not necessarily the ride quality of the 390s but the rollercoaster of the WCML, especially south of Rugby as Planner says