Sharpie Schooner 42 with an outboard motor

Discussion in 'Boat Design' started by valery gaulin, Apr 6, 2018.

  1. fredrosse
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    fredrosse USACE Steam

    An electric pod is probably much less efficient than turning a relatively large, low speed propeller, which could be fitted in your boat. 7kW generation could give about 7 SHP steady, and fitting a 15 HP motor (rated output) could suffice in my view, with some battery storage for 15 HP short time running, and would not take up much space. The overall space requirement would still be much larger than a standard sailboat type diesel, much higher expense, and you would still have the constant noise of a Diesel engine, unless you mount the diesel generator on a towed hull, tethered by the power cord.
     
  2. Angélique
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    Angélique aka Angel (only by name)

    Last edited: Apr 9, 2018
  3. chinaseapirate

    chinaseapirate Previous Member

    with what im looking at in angelique's post... a single deep cell marine battery (and trasformer if needed) could get you in and out of marinas if need be. People were staring ,two actually yelled, at me sailing my Columbia 23 through Oceanside harbor. It was perfectly helm balanced and handled just like a Sidney Sabot to me though with just the mainsail up...
     
  4. gonzo
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    gonzo Senior Member

    What would it need a transformer for?
     
  5. chinaseapirate

    chinaseapirate Previous Member

    I didn't know the voltage of the E-motion rudder drive. As I'm sure it would not suit my purposes for anything (as the prop blades are too fat), I didn't watch the video. I added four words of verbiage instead.
     
  6. gonzo
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    gonzo Senior Member

    How are you going to run a transformer with DC?
     
  7. chinaseapirate

    chinaseapirate Previous Member

    I am unaware that there are no step up DC transformers. A second battery is another 80 bucks at wall mart.
     
  8. M&M Ovenden
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    M&M Ovenden Senior Member

    Chop the DC. It's done all the time. I think this is a bit off topic for the thread, it's sort of down in the weeds.
    Cheers,
    Mark
     
  9. Angélique
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    Angélique aka Angel (only by name)

    For frequent use there are inboard and outboard motors, for little use you can build an overboard motor, and add an optional fin as a gimmick, which becomes handy if you want to see where the device is, since the little shark is controlled like a horse in front of a carriage . . ;)

    [​IMG] - Fred

    overboard motor 2.jpg

    overboard motor 1.jpg

    overboard motor 3.jpg

    Honey, . . . would you toss the motor overboard please . . . :)
     
    Last edited: Apr 12, 2018
    dsigned likes this.
  10. JosephT
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    JosephT Senior Member

    An outboard in place of an engine + drive shaft. Seems like the area would be prone to possible water in the compartment. That will invite possible engine problems, barnacles, coral reefs (ha!) not to mention carbon monoxide in the cabin unless the area is totally sealed off and well vented with a fan.

    I would venture to say it's not worth the trouble and could make someone sick or killed of there is even a hairline crack in the engine housing. Carbon monoxide from the outboard will be quite high. Best to leave those types of engines on the stern in open air.
     
  11. JosephT
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    JosephT Senior Member

    Correction - appears the engine is not encapsulated so the exhaust is open to vent out. Is there a plan for rubber boot to seal off the lower unit from the hull? If not, the open box in the stern is a potential habitat for ocean creatures. The barnacles, urchins, etc. would love to hide in there.
     
  12. philSweet
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    philSweet Senior Member

    Don't think this has been posted here before. Here is a 39' homebuilt with outboard power. Very nicely done. See 7'15" for the OB arrangement.

     
  13. valery gaulin
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    valery gaulin Senior Member

    Yes i saw those video couple month ago. They have 3-4 video of their sailboat. I ask a question to them on YouTube about the outboard arrangement but never got an answer!
     
  14. Angélique
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    Angélique aka Angel (only by name)

    Re post #42 & #43:

    It's a double of the standard set up for the outboard in a well option as per the Parker Terrapin 34 plans, the Terrapin 42 website drawing shows the inboard option.

    Terrapin 34 - link 1 - link 2 - auxiliary power: ‘‘Outboard in well or Inboard diesel’’

    [​IMG]

    [​IMG]

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    Terrapin 42 - link 1 - link 2 - auxiliary power: ‘‘Inboard diesel’’

    [​IMG]

    [​IMG]
     
    Last edited: Apr 13, 2018

  15. Angélique
    Joined: Feb 2009
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    Location: Belgium ⇄ The Netherlands

    Angélique aka Angel (only by name)

    Parker's Exuma 44 show the two Yamaha T9.9 outboards in a doubled well as a option in the plans.

    Exuma 44 - link 1 - link 2 - auxiliary power: Twin 9.9 Yamaha 4-cycle outboards in wells or Inboard diesel

    [​IMG]

    [​IMG]

    Note the minimized form of the cut out for the outboards in the bottom of the wells.

    The complete plans, and Reuel's book The New Cold-Molded Boatbuilding, tell to make lids out of these cutouts to close the bottom when the outboards are up.

    [​IMG]
     
    Last edited: Apr 13, 2018
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