the last page relates to this thread.
It would be very tight if one set was down the way things are ATM, there's a new TT coming out soon, to go with the NW service, meaning new connections. The Peak hours take up extra set needs especially the Scone service, and talk of extensions to Singleton are a big possibility as well.
... I know that all hunter line sets are 2 car services currently which is why I'm suggesting that the endeavour fleet will continue on this line. These services may expand beyond 2 cars in the future but they are for all intents and purposes a suburban type service rather then a regional service.
I'm not as familiar with the Hunter SWT as the other DMU routes. I was under the impression some of the upper hunter services were 4 car trains, but that appears not to be the case.
I'm pretty sure the current published timetable requires 7 concurrent train sets to fulfill. Newcastle Interchange -> Telarah is 41min, and the base timetable uses 4 trains on this to provide a 30min freq service. 3 trains are needed concurrently to go to Scone (x2) and Dungong (x1).
With skip stopping, this is cut to 35 min which means a 90min out and back cycle is possible, and only 3 trains required to fulfill the timeable.
It *should* be possible to make a timetable that only uses 6 of the 7 Hunter sets without any noticeable change in service standards.