Clive wrote:
In message
, Recliner writes
Clive wrote:
In message , Steve Fitzgerald ] writes
In message , Clive
writes
The trains haven't changed, has the signalling system?
I think you might find they have!
The driver also used to be able to speak to control in a system that ran
through the juice rails. So what is the system now and when did it change?
Didn't he use the usual wires along the tunnel wall?
That was done on the old 38 stock, indeed was tested every evening in
Colindale tunnel going north, two crocodile clips from a cabinet behind
the driver, and it never interfered with the juice. Whereas if the
handset was clipped onto the same wires it cut the juice to the rails and
connected you the juice controller.

Wasn't the juice cut by pinching the wires together to short the circuit?