i can believe it. But, if it ever got to the point of running 2 TPH Yeovil Jcn to Exeter, how much redoubling would be needed? Anyone got a clue?
It would depend, to some extent, on the stopping patterns, one assumes. (you could, for example, run one train semi-fast, or some kind of interlacing service).
But it must be close to the point where, rather than having loops every three miles or some such, for reliable operations, you might as well say - redouble the whole caboodle, surely?
Assuming a similar stopping pattern and an even 30 minutes between trains, you'd need dynamic loops roughly at Fenton and Crewkerne...
Ultimately i'd like to see at least a 4 phased approach to doubling on the WOE - And possibly carried out using Chiltern Railways Evergreen Approach. So,
Wilton to Tisbury - Loop extended through the station where you could make use or the closed Warehouse for second platform and Car Park,
Gillingham to Templecombe - Second Platform re-instated and 'plumbed in' to the double track from there to Yeovil,
Axminster Dynamic Loop extended, and
Honiton (Quite possibly closer to Feniton depending on the condition of the embankment - Immediately west of Honiton the line is slewed into the middle of the fairly steep embankment that may or may not be able to re-grain a second track placed onto it without major structural works)
to Pinhoe East - The problem here is that the M5 Tunnel has been built to only allow a single track running underneath it, it's not impossible to rebuild but no doubt very expensive and disruptive.
The latter part would allow the forthcoming phase of the Devon Metro to operate with more flexibility - and speed up the SWT Services on the line. Transfer some of the stops across to GW and speed up some of the Waterloo to Exeter services.
Weekend services do seem to vary, I'm often travelling between Basingstoke and Exeter (one bonus of being an Exeter Chiefs supporter!) and while most services have been 6 Car (the 07:59 - First train of the day from Waterloo on Saturdays comes up as a 3 Car), some have remained as 3 all the way to Exeter during the day. Coming back, most services remain 6 car although the 20:25 to Basingstoke is a 3 Car - sometimes conveying 3 cars OOU.
Incidentally, last weekend (17/18th) there was an issue between Exeter Central and Exeter St Davids which resulted in the following Westbound terminating in Exeter Centrals Platform 1 - Don't think I've ever seen a 6 car 159 in there before!