Weed eater engine conversion

Discussion in 'DIY Marinizing' started by Ward, Jun 2, 2003.

  1. hoytedow
    Joined: Sep 2009
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    Location: Control Group

    hoytedow Carbon Based Life Form

    I think I will try the underwater exhaust, after all.
     
  2. rmenasco
    Joined: May 2010
    Posts: 40
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    Location: Florida

    rmenasco Junior Member

    49 cc kill switch

    For those people have built the weed wacker motors out of the 49cc motors, the two wires coming out of the top of the motor are the kill switch correct? I almost have my motor complete. I just wanted to make sure that I had it correct...

    [​IMG]
     
  3. nick r
    Joined: Jul 2010
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    Location: bismarck

    nick r Junior Member

    is anyone willing to sell me one of these motors?

    Thanks,
    Nick R
     
  4. pistnbroke
    Joined: Jan 2009
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    Location: Noosa.Australia where god kissed the earth.

    pistnbroke I try

    come on Nick get with the programme MAKE ONE .......whats so hard ????
     
  5. nick r
    Joined: Jul 2010
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    Location: bismarck

    nick r Junior Member

    dislocated shoulder and limited time.

    But i would love to take one off your hands.

    hahaha
     
  6. pistnbroke
    Joined: Jan 2009
    Posts: 1,405
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    Location: Noosa.Australia where god kissed the earth.

    pistnbroke I try

    go see a quack and take early retirment
     
  7. nick r
    Joined: Jul 2010
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    Location: bismarck

    nick r Junior Member

    honestly i want to build my own. but this seventy pages of forum is just mind blocking me. i Need a list of parts and instructions and i would be more than happy to build one

    Thanks
     
  8. nick r
    Joined: Jul 2010
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    Location: bismarck

    nick r Junior Member

    ........
     
  9. pistnbroke
    Joined: Jan 2009
    Posts: 1,405
    Likes: 34, Points: 48, Legacy Rep: 404
    Location: Noosa.Australia where god kissed the earth.

    pistnbroke I try

    If you carnt figure it out from this post then you would be better to Google " Mud Motors " and go buy one with a warrentee
     
  10. nick r
    Joined: Jul 2010
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    Location: bismarck

    nick r Junior Member

    ok thanks buddy
     
  11. pistnbroke
    Joined: Jan 2009
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    Likes: 34, Points: 48, Legacy Rep: 404
    Location: Noosa.Australia where god kissed the earth.

    pistnbroke I try

    Time you are spending on here you could have had the thing built
     
  12. rmenasco
    Joined: May 2010
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    Location: Florida

    rmenasco Junior Member

    nick r, PM me i have detailed instructions on how to build one....
     
  13. DennisRB
    Joined: Sep 2004
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    Location: Brisbane

    DennisRB Senior Member

    Wow massive thread. Did anyone figure out an easy and cheap way to adapt a shaft onto the 50cc scooter engine and gearbox? Does anyone know the HP of these scooter engines?

    What about this brushcutter? Its 52cc and they claim 3.5hp @ 8000rpm! Would this be a good candidate for direct drive? I want to use it for a lightweight yacht tender mounted more like a conventional outboard than a longtail.

    http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=230504262041&ssPageName=ADME:B:WNA:AU:1123
     
  14. pistnbroke
    Joined: Jan 2009
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    Location: Noosa.Australia where god kissed the earth.

    pistnbroke I try

    no brushcutter is GOOD for this purpose due to the high rpm BUT they can be made to work if the prop is right.....the one you are looking at has a gearbox in the head which some have retained .........best get a bigger motor 100cc and use a chain drive to get the revs down...there is no substitue for cubes.....as the septic tanks say
     

  15. Mark Wo
    Joined: Dec 2007
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    Location: Minnesota

    Mark Wo Senior Member

    Devils advocate

    If your desire is to build a lightweight motor (under 20 lbs) the ONLY way you are going to do it is with a direct drive unit made with a small motor like a 52cc scooter engine. If you don't mind the weight, do as pistonbroke suggests and build one with a chain drive and a bigger motor. Only you know what will work for you. Me, I can't have the weight and the smaller motor works perfectly well.

    Mark
     
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