On 17/07/2016 19:38, Recliner wrote:
I thought all the Tube escalators were custom built? There might be some
components that could be re-used, but it's probably not worth the effort to
recover what are probably worn items with a limited remaining life.

The overall escalators are custom built but to existing designs. So
while the frame has to be customised and the number of steps may vary,
the actual mechanisms of (say) Charing Cross 10-12 are the same as any
other Otis MY-A, such as the six at Baker Street or Moorgate 3 to 6 or,
indeed, in other places.