trimaran looks for electric propulsion

Discussion in 'Hybrid' started by trimi, Mar 1, 2014.

  1. trimi
    Joined: Mar 2014
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    Location: nicaragua

    trimi New Member

    hello,

    my idea is, get a 10 hp diesel engine for $ 650 and two 200 amp or 3? 12 volt dc alternator from a lexus cost 180 each, some belts and load 10 2oo amp deep cicle batterys to push a 40 foot sailing trimaran into a national park and out for about 4 hours. I have 12 solar panels 140 watts 12v 5.5 amp each to support the 4 hours. Now, i like to have two electric engines in the hulls of the trimaran.
    What kind of motors i can use ? I think 10 to 15 hp for the boat is enough. Has anyone a better idea, every impulse is welcome.Were i can finde cheap electric motors ?
    thanks, trimi
     
  2. nimblemotors
    Joined: Jun 2009
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    Location: Sacramento

    nimblemotors Senior Member

    golf cart
     
  3. FAST FRED
    Joined: Oct 2002
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    Location: Conn in summers , Ortona FL in winter , with big d

    FAST FRED Senior Member

    Coaches , buses have DN 50 alternators which can put out 220-300A at 24V.

    Higher Voltage means less loss thru the wiring.

    I would install a lifting OB bracket and try the boat with a 4 or 6 hp outboard to get an idea of power required for low speeds.

    Using the diesel with a std shaft drive will be the most efficient as well as lowest cost , if permitted in the park.
     
  4. NoahWannabe
    Joined: May 2014
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    Location: United States

    NoahWannabe Junior Member

    Does the park allow a diesel generator but not a diesel inboard?
    I agree with Fred, if you are running a diesel generator in the park then electric motors and batteries just add cost and complexity to your drive train.
     
  5. trimi
    Joined: Mar 2014
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    Location: nicaragua

    trimi New Member

    Electric propulsion

    Hello, and thanks for the ideas.

    The Park allows all kind of motors but i like to be quiet.
     
  6. NoahWannabe
    Joined: May 2014
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    Location: United States

    NoahWannabe Junior Member

    If they allow any motor you want but you want a quiet propulsion, I would just get twin electric outboard motors with your 10 battery bank. Charge the battery bank from shore power. Maybe a small generator (2kw gasoline) for back up. You still have your PV panels too for house power during the trip.

    As for which electric outboard, there is a well known Torqueedo, and less well known but been around forever Rayeo and few new startups like Golden Mototrs and awesome price. Torqueedo seems to be getting their reliability kinks worked out, Rayeo just isn't flash but their durability seems good and any new start up like Golden or Parsun, you need a good dealer nearby and check their warranty history.

    http://www.rayeo.com/motors/
    http://www.goldenmotor.com/
     

  7. WecBoat
    Joined: Jul 2014
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    Location: canada

    WecBoat Navy Blue

    Take an old 10-15 hp outboard with a dead motor but a good feet. Remove the motor.

    Put a gulf cart motor at his place. You can find it on ebay. Have fun.

    I think that you only need one motor.
     
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