met24

28 minutes ago, Revolution Ben said:

Very interesting.  My understanding was that the nausea was caused by conflicting signals in the brain - eyes telling the passenger they're tilting, inner ear saying they aren't - because the tilt was 'too good' and exactly neutralised the effect of the curve.  Later designs took account of this and reduced the tilt just enough to ensure passengers' eyes and ears agreed!

That's exactly it. It's not (usually) a problem in aeroplanes because the roll rate is lower than it is on a tilting train and you're not generally rolling this way then the other way then back again. Except when it's turbulent and then you're being bounced around a bit anyway. It's interesting (and very useful for simulator manufacturers) that as long as you get some sensation of movement to go with seeing the movement, and as long as the feeling and seeing are synchronised, the amount of movement felt doesn't have to match the amount of movement seen. (Simulator visuals leading or lagging the movement even by a fraction of a second are a recipe for technicolour yawns!)

Back in my gliding days I remember one flight with a very experienced cross-country pilot who kept the glider perfectly coordinated (no skid/slip so no lateral force) and so you didn't feel any rolling -- but you saw it, just like with P- and E- trains. After an hour or so of aggressive thermalling I felt a bit queasy, but realised the best thing to do was close my eyes and lean my head against the headrest for a few minutes, and my brain would think we were travelling in a straight line. 10 minutes later I was fine.

As for lazy reporters, clearly they're not a new thing!

39 minutes ago, Markwj said:

Do the coaches pull apart easily ie very little resistance when coupled together?

For the articulated connections, the end of the coach without the captive bogie has a little hole that fits over a spigot on the adjoining coach's bogie -- so they're uncoupled by lifting off rather than being pulled apart, unlike the original model. Can't speak for the TBF-to-NDM coupling as I've only got the NDM so far, that looks like a pull-apart coupling but couldn't tell you how much force was needed.