I am new to the motorized bicycle concept, and I will begin planning my friction bike build from a repurpoused weedeater engine and a mid 90's Mongoose mountain bike. I was wondering if anyone had any general pointers or could point me in the direction of a thread that deals with general info for the beginner. I have searched the forum and have seen great bits of info in various threads, just wondering if this kind of thing has been centralized? one question I have...what is the best way to disengage the engine from the tire?