The bottom bracket adapter isn't going to work... the seat tube intrudes just a hair too much for the narrowest sealed cartridge I found. I put the original crank back on and did some digging on the web And found a disk that replaces the single speed changing up front and has mounting holes for a 130 BCD ring which I already bought, a 60 tooth chain ring for upfront so this will take care of that period it's $27. I wish I would have known about this sooner but I Hadn't seen this solution on any folding bike discussion. However it's a common upgrade for bmx bikes apparently. Here's what I ordered stay tuned for more....