- Well, here s somebody who seems to think alike. If you visit page 37 (page 23 of the pdf) of the Feb 2010 issue of The Energy Business , an Indian energyMessage 1 of 9 , Feb 21, 2010View SourceWell, here's somebody who seems to think alike. If you visit page 37 (page 23 of the pdf) of the Feb 2010 issue of "The Energy Business", an Indian energy publication (unfortunately available only as a whole-issue pdf online at http://energybusiness.in/pdf/Energy_issue_feb10.pdf), you will see that ADAG developing the Mumbai Metro plans to use gravity to accelerate/decelerate its trains. However, knowing how things work around here, I would wait till it is a reality before I believe it!
AshokOn Fri, Feb 19, 2010 at 11:26 PM, Chris Bradshaw <hearth@...> wrote:
An alternative that I have never seen promoted (other than by myself once or twice) is a "gravi-tram," a rail system that goes underground between
at-grade stations, which are located at the centres of neighbourhoods
districts. By using gravity to both accelerate and decelerate the trains,
the only power needed is during the approach to the next station, which,
like roller-coasters, can be provided off-vehicle by in-track motors, saving
a lot of vehicle weight (brakes are not even needed). The stations would be
designed like a roundabout, so that they could handle cars from several
tunnels, removing the need of most rail systems, above- and below-ground, to have to further separate the grade of the separate intersecting tracks, also increasing the size and cost of stations.