Hi my name is sean and im new to the fourm and i am intrested in making my bike into a motored bike its a bmx style bike. i am probably going to use a goped engine if you guys dont think i schould use something like a weed eater. I am not sure wich is better to make friction drive or a chain driven setup. although i have been thinking the friction, whick do you guys think is more esier to make. and is one really alot more practical.