Introduction of mk 3 stock on WCML

[43096]

Mk3s used in non-HST push-pull had no extra wiring as the existing RCH cables carried the comms information between the loco/DVT/DBSO computer racks.

I can’t be certain, but I don’t believe that DVT/DBSO braking was propagated from both ends of the train set???

Generally for West Coast DVT operation there was no brake propagation from both ends. For one, you need an E70 (or equivalent DW2/DW3) brake pipe pressure control unit at both ends. Obviously a Class 90 and DVT do, but Classes 86 and 87 don’t. In any case with 110mph max, it is not required anyway.