I'm building a Budget version of my own. i'm using a salvaged briggs & stratton 1.5-2.0 hp horizontal.Now i'm trying to figure out how to put a sprocket on the opposite side from the primary drive.Any input????I'm using a roadmaster motorized bicycle mens 26" . Been trying to figure out if multi speed or single speed with coaster brake is better . Do you have to have lighting on motorized bikes?Any and ALL help is very much appreciated! Thanks to All.