Making a motorised bike legal

Discussion in 'Motorized Bicycle General Discussion' started by Angus taylor, Oct 11, 2017 at 12:00 AM.

  1. Angus taylor

    Angus taylor New Member

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    I am very recently getting into the motorised bike hobby but i have recently been told that my 80cc motorised mountain bike is illegal in Western australia the rule is that any motor on a bike over 250w is illegal (80cc motors are about 1800w i think). I have recently been told that by making the gap between you spark plug shorter you can change the wattage and make you bike legal. IS THIS POSSIBLE? if it is can anyone tell me how i can do this and if theres any effects on the engine id appreciate it.
     
  2. malatious

    malatious Member

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    Well 250W would be down around 11cc. There is no way adjusting your spark plug gap will get you down there. I have heard that Australia has very strict laws for motorized bicycles. I hope that doesn’t happen to us here in the States. To be legal it sounds like you need to go electric. Hope you can figure something out.
     
  3. KCvale

    KCvale Active Member

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    There is such thing as an 80cc 2-stroke bike engine, they are all 66cc.
     
  4. TheNecromancer13

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    Australia laws suck even worse than oregon's lol.
     
  5. doomedgame

    doomedgame Member

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    250w is only 0.33hp
     

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