S7+1s on the MET

I'm not sure there is a date and a recent discussion here suggested they will be with us a while longer! From the sound of some of the S stock I was on last weekend the mods have not be successful or are incomplete!

Without going off topic too much, where did they get the extra car?

Would this not ruin the car number order?

But as it's only temporary I guess it's no biggie. That's why they're S7+1 instead of S8(L).

That what I thought but 2 of the S7-1s have got another car in them to make them S7s, have a look at the delivery list for more information.

I think that what he means is that the trains which have had their centre cars borrowed for use in the S7+1s (becoming S7-1s) have themselves gained a car from a later unit (specifically units 513/14 and 515/16) so that they can be run as S7s, although they currently aren't in service, and probably won't come into service until the after the S7+1s have been reverted. They are one of the low numbered oddballs, including set 345/46, which is still at the test track. I am assuming that it will make it's way down to LU before too long, especially now that it isn't being used for trials of cityflo, or will it remain at Old Dalby for trialling whatever system goes onto the SSL (please not seltrac!)

It is not unknown for cars to be renumbered to match the unit they now find themselves in: it's much easier than shunting the vehicles themselves around.

is the test track at Old Dalby still being used for S stock signalling related test even if the signals arnt produced by Bombardier?

What a good decision for LUL to make !!!