Ron Ron Ron

There are lots of companies globally, heavily involved in developing Sodium ion and other solid state battery chemistries. It's one of the biggest sectors for technological investment, in the present day.

It’s rehashing old ground, but nobody said ESU decoders were inferior.

Sorry Dave, it isn’t a bridge to carry rail tracks. It’s the new road bridge to take the diverted Perry Hill road over both the HS2 mainline and the access lines into and out of the depot, to/from the north. I posted this same reply in the HS2 thread. There’s a video on there showing that bridge from above. Here’s a map of the (to be) completed layout, showing that new bridge (Perry Hill Overbridge). You can zoom in for better detail……. https://assets.publishing.service.gov.uk/media/5a7eb9c9ed915d74e33f2084/C222-ATK-CV-DPL-020-000016_0.pdf .

The suffix letters denote the type of connector interface for the particular model of decoder (MX634 in this case). No suffix - wires no plug C - 21-pin (special type with logic level outputs) D - 21-pin F - 6-pin on wires R - 8-pin on wires All versions of the same MX634. As Kaput points out, Bachmann say MX634C as the Class 90 has a 21-pin connector. .

Calvert HS2 and E-W Rail, inc. the HS2 Infrastructure depot. A map of the affected area, showing the path of the diverted road.... https://assets.publishing.service.gov.uk/media/5a7eb9c9ed915d74e33f2084/C222-ATK-CV-DPL-020-000016_0.pdf (You should be able to zoom in, for a detailed look) .

It's not a rail bridge to carry the track. That's the new road bridge which will carry the diverted north-south road (I don't know the name or B route number) over HS2. The bridge is wide as along with the HS2 mainline, it will also accommodate the tracks leading into and out of the depot to/from the north. You can see that bridge in this recent video. It's briefly visible in the opening seconds, but skip to 6min 44secs and then to 7min 57secs, for a closer look. The road has already been diverted along a temporary route, linking in to the new bridge carrying the road under E-W Rail. .

The main reason for the cut and cover section at the southern end of the twin bore Long Itichington tunnel, is that the tunnel has to be at a shallow depth along this stretch, as the track has to emerge at the right level to cross the nearby River Itchen. You can see construction work on a bridge pier, next to the river, at 2mins 55secs into the video (Starting the video below goes straight there). The bored tunnel would be too close to the surface to be viable, so it was either switching from bored tunnel to an open cutting, or to cut and cover for this section. The former was not practical or desirable in that location. .

Long Itchington Wood tunnel, south portal. This end of the twin bore tunnel, becomes a cut and cover (green) tunnel for the last X hundred metres. .

Can anyone explain why a cutting isn't sufficient for this stretch of line? The Chipping Warden "green tunnel". At 6 mins in, you get a glimpse of the nearby village, which is a long way from most of the tunnel that's been built so far. The cutting has already been created. Why fill it with goodness knows how many hundreds of millions of ££££'s worth of concrete tunnel? .

Chilterns Tunnel South portal, where it all began. Construction of the aerodynamic tunnel portals are well in advance. Also, the 3 production plants at the site, tunnel sections, viaduct segments and the slurry treatment plant, are no longer needed and are due to be dismantled next. (note: the last viaduct segment has already been made). .

Speeded up Timelapse .... This is how they do it...... .

A brief view of a viaduct segment being delivered from the on-site factory at West Hyde (next to the Chilterns tunnel south portal), to the Colne Valley viaduct. A good view of progress on the chalk grassland landscape being created alongside the new railway, using the spoil from the 10 mile long twin bore, Chiltern tunnels. .

That section of tunnel has been covered over from very early on, not long after it was completed. I can't remember when, but it must be at least 6 months ago, if not a lot longer. They haven't covered any more up yet, so maybe it was done early on as some sort of test or assessment. .

We get over the air map updates sent to our cars, every so often. Most older cars have to have their sat-nav updated at the dealership. Those cars that have Google Maps embedded in their car operating system are always up-to-date. A small number of manufacturers are using the Google Android Automotive operating system (not to be confused with the Android auto app). Volvo, Polestar and Renault (on their EV only Megane e-tech) are an example. .

The infinity pool on the roof garden is something else. We had lunch at one of the restaurants up there, a couple of years ago. We watched the F15’s passing by at eye level on their way back in.