On Fri, 22 Sep 2006 22:50:28 +0100, Peter Frimberley wrote:

I think the overhaul was more about "behind the scenes" or
"undercarriage" stuff. These five units having been isolated on the
W&C had apparently become very different to the supposedly identical
1992 stock on the Central Line - e.g. I don't think the motor mods
that had to be done to the whole Central Line fleet when they started
dropping off had ever been done to the W&C stock; and a whole series
of similar in-cab and underfloor alterations that had been done to the
Central stock meant that the drivers could no longer drive each
others' trains. So to enable possible driver rotations in future
(because driving the W&C is boring as hell so they want to look at
just spending a few months at a time on it), and to keep costs down by
applying the same fixes and spares to both sets in future, they had to
do a lot of "catching up" work on the W&C stock.

Why didn't they go all the way and install ATO?