Bike size

Discussion in 'General Questions' started by Nathan, Dec 14, 2015.

  1. Nathan

    Nathan New Member

    Want to put motor on my boys 20" mountain bike. No worries on safety he is amazing on anything with wheels or a motor and can handle speed. Want to know cheapest way to do it and what model motor kit I should use...

  2. crassius

    crassius Well-Known Member

    I'd guess that a friction drive would be all the would fit easily.
  3. butre

    butre Well-Known Member

    you will probably have to go rack mount. what are the dimensions of the triangle in the frame?
  4. jaguar

    jaguar Well-Known Member

    cut the top frame tube so the cylinder head has space.
    Then weld up a curved tube to reconnect the frame together.
    butre likes this.