Just a few bits in reply to posts, I’ve found that some of the 444s are starting to creek above the bogies, oddly though it’s only in the 500 coach (TOSLW). Perhaps some units do make similar noises in other coaches but as I tend to spend more time in that particular coach I’ve noticed it more there.
In regards to the aircon, certainly on 3rd rail there’s a few places where the HVAC MCB trips temporarily as you cross junctions, and it clunks out, the coach then goes silent and it really does go to show how noisy they actually are, I’d imagine same thing happens on overhead through neutral sections.
The PIS is okay, not all of the guards diagrams have a code so they’re supposed to revert to 0001 SWR and then use manual announcements. Sometimes the GPS doesn’t work and requires a hard off/on reboot which usually fixes everything but other than that I’ve found them reliable on the whole.
In regards to the aircon, certainly on 3rd rail there’s a few places where the HVAC MCB trips temporarily as you cross junctions, and it clunks out, the coach then goes silent and it really does go to show how noisy they actually are, I’d imagine same thing happens on overhead through neutral sections.
The PIS is okay, not all of the guards diagrams have a code so they’re supposed to revert to 0001 SWR and then use manual announcements. Sometimes the GPS doesn’t work and requires a hard off/on reboot which usually fixes everything but other than that I’ve found them reliable on the whole.