Outboard to Motorbike?

Discussion in 'Diesel Engines' started by donncha, May 5, 2006.

  1. donncha
    Joined: May 2006
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    Location: Ireland

    donncha Junior Member

    Hi as you can see i'm new here. I was trawling through the internet and found the Weed eater engine conversion thread. This is something I was looking for for years. So there are people out there as mad as me when it comes to boats.

    A bit different to your standard marine conversion as you usually want to acomplish the opisite. But would it be possible to converte a 2 stroke outboard to run in a motorbike. The reason I would want to do this is so that you could then run the bike off bio diesal. There dosn't seem to be many diseal motorbikes out there so I thought where else do you see a small diseal engine? Outboards. I don't have much experience in engine construction or conversion put I am familiar with outboards not so much with motorbike engines.
     
  2. marshmat
    Joined: Apr 2005
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    Location: Ontario

    marshmat Senior Member

    There are very few diesel outboards in existence, at least in North America. Almost all run on petrol/gasoline. Do you have a diesel outboard already?

    In motorbikes, light weight and high power density are very important. Almost all diesels really suck on both counts. (The unit in the Smart car is one of the few exceptions.)

    Perhaps the biggest difficulty is that an outboard is a vertical-shaft engine, a bike is horizontal-shaft. Turning a vert.shaft motor 90 degrees and running it like that is not good for it.
     
  3. moTthediesel
    Joined: Apr 2006
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    moTthediesel Junior Member

    In motorbikes, light weight and high power density are very important. Almost all diesels really suck on both counts.

    There's a German company building diesel sport bikes using the 3 cyl TDI engine from the VW Polo car. They are very quick and get stupid crazy fuel mileage (like 90 mpg) too.

    moT
     
  4. SeaSpark
    Joined: Mar 2006
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    SeaSpark -

    Hayes Diversified Technologies diesel bikes

    http://www.m1030.com/

     
  5. donncha
    Joined: May 2006
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    Location: Ireland

    donncha Junior Member

  6. blderby
    Joined: Jul 2006
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    Location: Adams, TN

    blderby New Member

    Small Diesel

    Here is a link to a small diesel engine I found some time ago. They do offer a vertical shaft version. It is 20 hp and air cooled. I have tried to get one, but I need to contact a friend of mine that knows more abour dealing with China.

    Please let me know if you try the conversion. I would be something that I would like to try also.

    http://www.diytrade.com/directory/g....html?ebcfwd=55f3c5e9d26768d09becb69af3f55c44
     

  7. Frosty

    Frosty Previous Member

    At 22-1 compression ratio a single cylinder diesel would shake your teeth out along with other small bits. But it sounds like a bit of fun. What about a single lister off an old concrete mixer?. You would need to belt drive it to a gearbox like the Harleys ( cool) and chain it to the rear wheel. Oh it will need a helova flywheel as well. Oh wait a minute though you would have no clutch!! Darn--I thought I cracked it then.
     
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