On Mar 20, 12:53*pm, Alex wrote:
On 20 Mar, 12:31, Mwmbwls wrote:





On Mar 20, 12:13 pm, Alex wrote:

I have issues that relate to the idea of running Airtack beyond T5 which
implies either new tunnels or dual voltage trains. * I don't believe the
existing T5 reserved space for Airtrack platforms could necessarily be
extended to become part of Hex.

Could the tunnels take 3rd rail? The intention is to get very frequent
services from Iver Parkway to Staines Parkway - better than long term
parking buses. Hence running Hex / Crossrail to Staines, and Airtrack
to Iver.

http://londonconnections.blogspot.co...label/AirTrack

Could the tunnels take third rail - well the tube ones take fourth
rail. However BAA proposes to extend 25kv from Heathrow to Staines
implying that 750v DC third rail is not going to be welcomed. See the
ever helpful Mr Thant's blog detailed above

In this case they'll need dual voltage trains that could continue onto
from T5.- Hide quoted text -

- Show quoted text -

That appears to be their thinking - see the consultation documents.