predator 22hp for inboard application with electric reverse

Discussion in 'Gas Engines' started by neonguy07, May 31, 2019.

  1. neonguy07
    Joined: Apr 2015
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    Location: peoria il

    neonguy07 Junior Member

    ok i asked about the fnr gearboxy cuz i was looking for a marine engine to mate to it. But after a visit to harbour freight i saw the 22hp predator vtwin:) not gona lie its pretty. Now the boat I am building is not a speed boat nor do i need to go fast. Now question....boat is 17ft long 7.5ft wide built of 2x4 and plywood sheets(all treated) so it is heavy...now idea is will this engine be able to handle that boat at a decent cruising speed"thinkin 10-15 mph" and be able to go up river. idea is instead of the gearbox im just gona put a driveshaft to engine then out transom ,between shaft and engine il use an electric clutch i can engage/disengage easily(drive/neutral) then im eyeing the idea of using a small electic motor maybe chain driven to shaft to use as reverse as reverse isnt used that much,engine neutral turn on electic boom a somewhat complicated mess of fnr lol.maybe off that chain il also run a mini alternator to charge batteries run lights equipment ect. so please be honest does this good..or am i just losing my mind.....
     
  2. 7228sedan
    Joined: Nov 2009
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    Location: New Jersey USA

    7228sedan Senior Member

    Seems overly complex... why not put an outboard on the transom and call it a day?
     
  3. neonguy07
    Joined: Apr 2015
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    Location: peoria il

    neonguy07 Junior Member

    No offense I love how thats always the reply people give..easy way to explain it is its to easy everybody can do that...I'm not lazy and I don't like easy this more of a therapy for me I like difficult and like thinking outside the box..cuz honestly I could have just bought a boat and been done with it lol but that way would be easy and yes I have an outboard if I need it..in the meantime I'll take the complex way since easy and lazy is no fun;p
     
  4. 7228sedan
    Joined: Nov 2009
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    Location: New Jersey USA

    7228sedan Senior Member

    That's fine if that's what you're in to. It's a matter of practicality, not laziness. 17 foot plywood boat is going to offer you some serious space limitations for your proposed battery reverse solution. How are you planning on mounting the Predator 22HP motor? I know those are used in shallow draft swamp type applications. What's your installation going to be? This is an air cooled motor correct?
     

  5. Rumars
    Joined: Mar 2013
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    Location: Germany

    Rumars Senior Member

    The answers you are looking for are yes and maybe. Can you run without a transmission? Yes you can and you would not be the first. Can you do electric reverse? Yes but why, you only need a paddle. Will the boat make 10-15mph with that motor? Maybe. If the boat is designed for it then yes. If you have no ideea how to match hull form, boat weight, motor power and propeller then no.

    If you want to do it the hard way you need to educate yourself about powerboat design. A boat is not just a funny shaped cabinet made out of ply and dimensional lumber. Buy some books and start reading.
     
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