Solar boat

Discussion in 'Projects & Proposals' started by kengt, Feb 2, 2012.

  1. kengt
    Joined: Feb 2012
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    Location: paradise ca

    kengt Junior Member

    Hi There,
    My daughter and her 6th grade class have entered a competition to design and build a solar boat. Does anyone have any ideas or links to get them started in the right direction?
    Your help will be appreciated
    Kengt
     
  2. philSweet
    Joined: May 2008
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    Location: Beaufort, SC and H'ville, NC

    philSweet Senior Member

    What are the rules? What is their budget? Sponsors? Time frame?
    I hope the Sponsors have a good disclaimer policy.
    You need to recruit a boat surveyor and indemnify him and get him to vet the electrical system for safety - before they build it. ANY electrical component not specifically made for boats is a risky proposition.

    In terms of being able to fiddle with the powertrain and then installing it on a boat, I think an air fan boat would be the easiest to design/test for thrust and then select an resonable hull for the result. Lots of info on model plane props and motors and reasonable cost on these parts. but I repeat, parts not made for boats need to be looked at very closely.
     
  3. BPL
    Joined: Dec 2011
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    Location: Home base USA

    BPL Senior Member

    Child on board, or model-scale?
     
  4. taniwha
    Joined: Sep 2003
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    Location: Pattaya, Thailand

    taniwha Senior Member

    get a Torqeedo travel, a Torqeedo solar panel. Buy a small dinghy, place the solar panel on the dinghy, hang the Torqeedo at the transom and here you have a solar boat!
     
  5. kengt
    Joined: Feb 2012
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    Location: paradise ca

    kengt Junior Member

    Spec for Solar Boat

    Yes, actually the kids will be the pilots.
     
  6. taniwha
    Joined: Sep 2003
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    Location: Pattaya, Thailand

    taniwha Senior Member

    is dadddy paying? What is the budget?
     
  7. kengt
    Joined: Feb 2012
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    Location: paradise ca

    kengt Junior Member

    The rules are: We are given 4 solar panels MSX64 (Solarex is the brand), we choose a boat (we are looking for a lightweight boat. Also it must be less than 20 ft. long, less than 8 ft. wide and less than 5 ft. tall), a 100ah at 24v battery, any DC motor, must compete in a shalom, speed and a endurance race. Your help is very much appreciated. Thank you!!!
    kengt
     
  8. kengt
    Joined: Feb 2012
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    Location: paradise ca

    kengt Junior Member

    Budget

    The project is funded by state grants and local donations. We have about $3500 so far.
     
  9. Stumble
    Joined: Oct 2008
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    Location: New Orleans

    Stumble Senior Member

    Given the limitations, I am thinking either build or buy a 20' long canoe, with as little free board as possible to support the weight. Using a high power 24v trolling motor for power. Most of this can be found used for a fraction of new prices.

    If you have the time and resources to build, then go with a even narrower hull. More like a kayak.
     
  10. masalai
    Joined: Oct 2007
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    Location: cruising, Australia

    masalai masalai

    Get 2 skinny hulls (used) as the base platform easier to drive (a hobie 12 ft of 14 ft would be OK too... the expensive bit would be the drive motor, if home made a flexible ss shaft about 3/8 ins dia (or one made of grp) and affix a 2 blade model airplane propeller about 12 inches in diameter or bigger then use hobbyist gears to gear it down so it rotates nicely in the water... Look up threads by Rick Willoughby on man powered boats (he designed and recorded design thinking on this site - his design was winner in a 24hr man powered race... my thoughts come from there...
     
  11. pistnbroke
    Joined: Jan 2009
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    Location: Noosa.Australia where god kissed the earth.

    pistnbroke I try

    Check out the electric boat assosiation electric challenge at http://www.bealeparkboatshow.co.uk/competitions/corless_canoe_challenge_results_article/

    you can build a stitch and glue for under $300 no sharpe transom please and fit your 24 v minn Kota with a aero prop about 10 x8 ...you will only need about 60w to do 4 mph ...calc charts at electric boat association http://www.electric-boat-association.org.uk/

    Also see http://www.boatdesign.net/forums/boat-design/efficient-electric-boat-27996.html

    your 100ah 24v will keep you going for 6 hrs ...you will only need 12v which will in effect give you 200ah at 12v
     

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  12. daiquiri
    Joined: May 2004
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    Location: Italy (Garda Lake) and Croatia (Istria)

    daiquiri Engineering and Design

    What is a shalom race? :confused:
     
  13. michael pierzga
    Joined: Dec 2008
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    Location: spain

    michael pierzga Senior Member

    I thinks its when you have to steer around a tight course of buoys. Means the design has to be maneuverable...not a long thin straight line speedster.

    To the OP...do some googling for elcectric boat races.
     
  14. daiquiri
    Joined: May 2004
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    Location: Italy (Garda Lake) and Croatia (Istria)

    daiquiri Engineering and Design

    Ah, slalom race then. :)
     

  15. michael pierzga
    Joined: Dec 2008
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    Location: spain

    michael pierzga Senior Member

    Perhaps put some tell tales on the panels and feather the solar panels upwind . Minimium windage. Downwind go for max windage solar panels or max windage BAT WING crew racing suites

    Perhaps a sliding seat so you can shift crew weight to match all conditions and turn faster on the coarse.
     
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