hexagon789
Veteran Member
No idea, but running without a DVT seems to have been fairly short-lived, so perhaps the initial tests were 100mph max.I would be amazed if normal training/commissioning runs allowed 125mph running without a rear brake unit as it is linked with braking distances. Some specific testing under test conditions with DM&EE staff, possibly, but not more widely.
== Doublepost prevention - post automatically merged: ==
Thank you.Yes. The big timetable change was May 1988 when the loco hauled trains were replaced with class 156s and a very different timetable. Broadly speaking Norwich had 1tp2h to/from Birmingham and 1tp2h to/from Liverpool from May 1988.