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monorails and other low capacity systems

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  • Ranjith de Silva
    Sent: Tuesday, 02 February, 2010 04:54 Subject: [sustran] Re: monorails and other low capacity systems There is an old technology which has been further
    Message 1 of 1 , Feb 2, 2010
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      Sent: Tuesday, 02 February, 2010 04:54
      Subject: [sustran] Re: monorails and other low capacity systems

      There is an old technology which has been further developed by Practical
      Action Nepal called "Gravity Ropeways". This is a 100% emission free
      technology using gravity to slide down a trolley on a steel cable with a
      load of farm produce of poor communities living up in the mountains in rural
      Nepal.

      There is a barking system that was developed to control the movements of the
      two trolleys (Heavier one comes down and the lighter one goes up). In one of
      the sites, this device has been able to reduce 2 hours of travel time by
      foot to 3 minutes to transport vegetables/goods. However, this device is
      used only for goods (freight) transportation but passengers due to safety
      factors.

      The wheel that is fixed to the brake system also turns very fast during the
      short operation of the ropeway/cable way. I think the energy generated by it
      can also be used as a dynamo to charge a battery (for lighting??)

      For more information please visit URL:
      http://practicalaction.org/transport/gravity_ropeways and/or technical brief
      http://practicalaction.org/transport/docs/region_nepal/gravity_ropeways_nepa
      l.pdf

      Thanks.

      Ranjith

      Ranjith de Silva
      Regional Coordinator for Asia & the Pacific
      International Forum for Rural Transport and Development (IFRTD)
      C/o. 319/10 Ramanayaka Mawatha
      Erawwala
      Pannipitiya 10230
      Sri Lanka


      -----Original Message-----
      On Behalf Of Ramon Munoz-Raskin
      Sent: Monday, February 01, 2010 6:01 PM

      Briefly: The Medellin aerial cable car is part of an integrated
      transportation system approach. The system was created to provide
      accessibility enhancements to deprived communities that had informally
      developed in geographically constrainted locations (e.g. sides of a steep
      valley) where higher capacity systems such as large, ferquent pattern bus
      services would either not fit (narrow curvy streets) or would not be able to
      climb up there (to steep slopes), among other reasons. In my several visits
      to Medellin during the last few years I have understood well how this system
      is succesful there for daily regular commuting of these low-income
      communities. Capacities are competitive with bus services. Something worth
      mentioning as well is the "democratization" and urban renovation that is
      associated with an aerial cable car stop- these areas flourish. Tourism is
      marginal, but the city is very proud about it and, therefore, it is
      definitely promoted as a tourist attraction.

      Ramon Munoz-Raskin
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