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Proposed high speed freight service in France
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[quote]QUOTE: <i>Originally posted by uzurpator</i> <br /><br />Acelas are waayyy overpowered - even for such an overweight train it is. Single power car in a push-pull configuration could keep the timetable as well as double power-cars now. Remember that Acela was designed to haul 12-14 coaches. <br /> <br />As for power requirements. If you have the wire above you then power is a minor issue. Russians have 12700 hp locos (single section, they also have triple section 3VL85 with 18600 hp :p) wich runs at 125 mph. With regenerative braking a good deal of power can be sent back to the wire. <br /> <br />The issue is capital cost of electrification. Because frankly - diesels are not so good for speeds above 100 mph. <br />[/quote] <br /> <br />I seem to remember a blurb in one of my railroad related books that mentions the oringinal E units were geared for 112 mph operation. Again, this is using 1940's technology. Transportation theorists or the past have said that the upper speed limit for efficient stand alone surface transportation is around 125 mph, after which you need either an outside source of power, or a non-friction based guiding mechanism. We could probably up that to 150 mph or higher with today's technology. The point is, it is doable without electrification e.g. catenary.
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