matthew25187 wrote:Costing trains would be redundant, as services could be largely comprised of existing rolling stock.
No it wouldn't be, you would need rolling stock different to the Ganz Mavag and Rotem Mitsui units due to the long distance involved. Currently, the off-peak run takes 1 hour 35 minutes, with the worst peak service taking 1 hour 44 minutes. Assuming that electrification allows the timetable to be sped up by 10-15%, that would cut the journey down to a best case 85 minutes and a worst case 95 minutes. Assuming that you wished to run a thirty minute off-peak and fifteen minute peak timetable, you would need fourteen trains to run the peak timetable, with a further two spares - a total of sixteen. Assuming that we get the best stuff out there (EDI Bombardier Units), that would cost us about $160 million in rolling stock and that is assuming we run three-car sets; we would probably want six-car at a minimum.
Remember that to fit this timetable through the Hutt Valley, you would need to triplicate from Upper Hutt to Taita, and quadruplicate from Taita to Petone. Add those costs, and things aren't looking cheap at all.
IMHO, we should first of all focus on improving the facilities offered either side of the Rimutaka Tunnel - a 20 minute frequency should be possible even if the Rimutaka Tunnel remains single track, and this is on the assumption that no freight trains run during peak hour. Of course, even that sort of frequency would require some level of amplification within the Wellington Region.
matthew25187 wrote:Why would you want to duplicate the Rimutaka Tunnel? Don't forget that there used to be passing loops at both ends of that tunnel that were removed years ago (presumably because they were no longer used).
They were no longer used because the rolling stock profile was no longer suited for them. When Maymorn Station was constructed, it was designed for a three car English Electric and the sort of rolling stock that we had in the 1950s (remember, it was planned that Masterton would get electrified at the time).
Also, even if the road was improved, I doubt it would have a negative impact on rail services to the Wairarapa.
Finally, could someone split these posts off from this thread please.