i am interested in building a basic starter bike utilizing an old ralieh with the slim tires, thinking about using a motor from a weed trimmer but want to learn more and plan, so that the conversion into a motorbike is smooth(er). do you think it is better to use a 2 or 4 stroke? any suggestions for supplies that are neccessary for these projects? just starting here so i don't know much about the subject yet. I have seen motor bikes in my community recently and i though i might give it a try. they had those low profile bikes for touring, i eventually want to build one of those but feel i should start off with a less expensive or least expensive way to simply mount the motor and whatever. I'm sure theres a lot more to it than that, but anyways hello to everyone on this forum.