I am "inbetween" folding bikes right now, but my downtube NS had developed few problems before I sold it. and excuse me but my bike terminology is poor. the wire controlling the gear came off. I had to drive to bensalem PA to even figure out what was wrong. the bull horn bars were poor and parts fell off and I had to use tape to fix it up. few cracks developed on the folding pedals which were made from cheap metals. the front hinge was very squeaky. it was great bike. and I liked it. except I was not using it as a folder because of the fold size. septa was denying my boarding during peak hours and during off-peak hours I did not have to fold it.