On Tue, 15 Jun 2010 23:18:41 +0100, Neil Williams
wrote:

Offset by the EMUs not required to run the normal local service. If
they have any sense the Crossrail tunnel will be full size and any
EMU will fit - one would hope.

They could stick with the 165 DMUs on the Paddington to Reading
locals. It would be very short sighted as they will be 25 years old
when Crossrail opens but any replacement costs a few years later would
not count against the Crossrail budget.