Designing a Water Bike

Discussion in 'Boat Design' started by malith, Jul 24, 2014.

  1. rwatson
    Joined: Aug 2007
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    Location: Tasmania,Australia

    rwatson Senior Member

    I always thought that waterbikes would have more appeal if they put the passenger closer to the water, say like in a recumbent seat, and had a transparent bottom to view underwater as well as over water.

    This would also resolve the other big problem with light watercraft, the nuisance of high windage on tall structures.

    There is probably a case for a cockpit cover for extra streamlining and rain and cold protection - and it would increase the range of weather conditions you could use it in

    Bigger -someone has done it






    edit - oh hey - for $80K you can buy one all ready for a pacific or Atlantic crossing

    http://adventuresofgreg.com/blog/2010/11/11/within-is-for-sale/
     
  2. malith
    Joined: Apr 2014
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    Location: Sri Lanka

    malith Junior Member

    thanks for the help gonzo!!!

    i'm currently planing to build a planing catamaran. but i have a little problem. i cant understand why all rowing boats have narrow long shape. most of the ships and boats have transom end shape.

    Thank you
     
  3. malith
    Joined: Apr 2014
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    Location: Sri Lanka

    malith Junior Member

    thanks for help!!!

    i'm making this as my final year project. so there is no design limitations.
    my idea is to make a craft for a single person which can be used in rivers and lakes.
    powering method will be human power: in addition a motor can be also installed to assist the human.
     
  4. malith
    Joined: Apr 2014
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    Location: Sri Lanka

    malith Junior Member

    thanks for the help tspeer

    michlet was very help full

    i'm planing to install an electric motor and use a hybrid transmission system so that both power sources can be used at the same time. it is design to operate in calm water(rivers and lakes) for recreational and transportation use.
    in addition planing to install a hydrofoil. motor is used to get the speed required to lift the boat.then operator can power it by manual.

    i'm using a catamaran hull for better stability.

    i have a limitation of length overall. it had to be in the range of 2m-2.5m
    as per the hydrofoil calculations it required 3m/s speed for lift the craft. so when considering the froude number it can't be a displacement hull.

    thank you!!!
     
  5. malith
    Joined: Apr 2014
    Posts: 32
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Sri Lanka

    malith Junior Member

    thanks for the help eric


    i'm planing to install an electric motor and use a hybrid transmission system so that both power sources can be used at the same time. it is design to operate in calm water(rivers and lakes) for recreational and transportation use.
    in addition planing to install a hydrofoil. motor is used to get the speed required to lift the boat.then operator can power it by manual.

    i'm using a catamaran hull for better stability.

    i have a limitation of length overall. it had to be in the range of 2m-2.5m
    as per the hydrofoil calculations it required 3m/s speed for lift the craft. so when considering the froude number it can't be a displacement hull.

    thank you!!!
     

  6. portacruise
    Joined: Jun 2009
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    Location: USA

    portacruise Senior Member

    If you haven't reviewed old designs already, here is one of many including some cat displacement designs, which might be helpful:

    https://www.youtube.com/watch?v=RaYhyeGxYoA

    Sustaining an operator on his own manual power for any significant distance will be quite a challenge, even without the added weight of a hybrid motor system.

    PC

     
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