Modifty an outboard motor to power an "Iceboat"?

Discussion in 'DIY Marinizing' started by Icefisher, Dec 10, 2007.

  1. Icefisher
    Joined: Dec 2007
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    Location: USA

    Icefisher New Member

    This may sound insane, but back in about 1969 or 70 I rode in an aluminum boat over a frozen lake, powered by an outboard motor whose "prop" was a large toothed disk (much like a circular sawblade, only larger) that dug into
    the ice to push the boat along. Naturally, the disk turned perpendicular to a normal outboard propeller. Steering was just with a standard tiller arm.
    This thing worked amazingly and was very very fast !

    My question is this.... Can someone explain how an outboard can be modified in this way?
     
  2. Syed
    Joined: Sep 2005
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    Location: Lahore, Pakistan

    Syed Member

    Icefisher,
    It may not be workable to modify an outboard for this purpose, but making an arrangement with a general purpose engine should be easier in my opinion. This sketch is just to throw an idea.

    [​IMG]
     
  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

    How did they cool the engine ? Most outboards require liquid water .

    FF
     
  4. Icefisher
    Joined: Dec 2007
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    Location: USA

    Icefisher New Member

    I wish I knew!.. I was 11 years old at the time and never thought to ask the
    owner of the ice shanty rental place.

    Ive run across info about a company called Polar Motors that actually made
    an outboard exactly as described in my first posting. It was only sold for 1
    year (1964) so it may have been one of those and not a modified motor at
    all. The outboard didnt sell very well so Polar quit making them and switched
    to snow machines and changed their name to Polaris.

    Still, I thought there were/are air-cooled outboards that might be modified.
    Anyone out there.. Are there air-cooled outboards around???
     

  5. Syed
    Joined: Sep 2005
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    Location: Lahore, Pakistan

    Syed Member

    I can imagine it will be great fun with safety, when you get the required machine.
     
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