referring to Kuldalai's post earlier;
2-car V'L would be fine also for Bendigo - Echuca and Ballaarat - Ararat.
In any case it won't happen; too much trouble to retain 2-car sets among all those 3 car sets.
4-car sets would make a lot of sense on all sorts of fronts, except that it would demonstrate the flawed thinking that contributed to recent design of fuel points and yards. Can't have that, can we!
Going back to the original topic; those 5-car Sprinters. We recently calculated the number of things that can fail while working in that configuration.
Take the number of driving cabs (10), multiply by the wheels (8 on each of those 5 cars equals 40); you get a sub-total of 400.
Add on the number of trailing vehicles (4) plus the number of intermediate couplers in use (8); that gives the second sub-total of 12.
Finally, add up the two sub-totals (12 plus the earlier 400). That gives 412, the Victorian gunzel's favourite number!
How often do they fail in real life though, I have been on Sprinters many times between Seymour and Southern cross an I only know of two failures and one of those was a unit running out of fuel and thats a usage issue. The other failure was an engine shut down on accelarating out of Kilmore East.The units themselves are built for high relaibilty in normal operations. There would be a good chance that most faults would be electrical though. Inspite of much long exerience a lot of manufacturuers of industrial equipment seem to find it difficult to build really reliable electrical systems.