hi im new to the forum but here i go i need some help i have a occ schwinn chopper i picked up for 10 bucks i want to put a motor on it with out cuttin the frame so i decided on a predator 99cc which im gonna run to a jackshaft to the origonal sprocket on the rear wheel what size chain is on this stock and what would be a good gear ratio also any performance mods for the 99cc and also im having difficult takin apart my crank i want bothe pedals facing foward so i can weld it like a pair of pegs. all help greatly apreciated. 
