Hey guys, I'm new to the pocket bike scene and have been browsing the forum for a month or so now but have never posted till now. I picked up a FS509 for dirt cheap and its in good condition but I'm not happy with the little 49cc 2-stroke. I have torn the bike down to the frame and am now considering doing a 110cc 4 stroke swap with a 3-speed semi-auto. I can buy the engine and trans for cheap but the only issue for me is that the chain is on the opposite side. I know that i wont be able to just flip the rear tire around due to the locking bearing on the hub. I have access to practically any tool or machine i would need to do this but i want to be prepared and have all the parts ready to kick it out in a day. Just wondering if there is a link to someone who has done it with pictures or if anyone has done it and can tell me how. Thanks!