How do you build a motor bike?

The recommended way is to buy a motorcycle factory. If that is too expensive you may want to have a professional do it (frame builder + standard motor + ...). If that is not what you want, then you are planning on spending a LOT of money and in the end it will be inferior to the store bought kind. ------------------------------ A good way to build a bike is to have one (or more) non-functional motorcycles and use the working parts. When you build a bike from more than one bike, this is called a "conversion bike." If all of the bikes are from one maker, you tend to have a easier time making everything work. If this is what you want, work towards your goal and don't listen to people who tell you "no."