"John Shelley" wrote in message
...

Two points.
Firstly, LT trains work in the same way and I am not aware that they have
had problems.

LT trains will leave depots at slow speed when the "dead" trips are tripped.

Secondly, Once a tripcock is struck it remains in the up position until
it
is reset when the unit is uncoupled so the rear unit tripcock will only be
hit once per period of time that the unit is coupled as the non leading
unit.

That still leaves the front and rear-most cocks being reset a hell of a lot
of times, and being struck at high-speeds.


--
Ronnie
--
Have a great day...
....Have a Great Central day.
www.greatcentralrailway.com