Hi,

-- In nscaletraction@yahoogroups.com, "C.K. Leverett" <leverett@...> wrote:
> Trying to remember where I've seen it done in the prototype...
> know I have at one point. We've actually talked about doing
> it at BERA for reversing our subway equipment, our PCCs, and
> our Toronto Peter Witt since we've mounted single poles on the
> subway cars, but each one would be different so it's not practical.
> (Even before the flooding last year we couldn't take the subway
> cars quite to the end of the line because of an aging culvert.)

If the delta part of the device is relatively short and it has a
longer rectangular wire and uses three spring loaded wire frogs,
then it will work with various pole lengths and positions.

However I've only seen the classical vertical switch under a
loose (weight tensioned) wire. The driver had to manually pull a
rope to pull the pole over to vertical position and then over to
the reversed direction. The same rope is usually used to hold down
the pole when the car is not in use and to place it back after a
dewire. The rope is attached to the pole and hangs down on both
ends of the car and can be reached from inside by opening the
front window. This method also works with bow collectos.

best wishes: Viktor