IIRC (), they can't run over the LUL section as they don't have trip cocks?
Metrailway said:Yep they don't have tripcocks. In the recent past, there were delays on the Chiltern Main Line, so Chiltern asked LU to allow diverted LHCS service over the Met but were refused due to it not having tripcocks and not being guaged.
Presumably it would be too expensive to fit tripcocks to a DVT/67? Do the 66s on LUL engineers workings have them? The gauging issue didn't occur to me; I suppose Mk3s have never needed to travel on LUL tracks?