So I took the Schwinn out for the first time in a couple weeks. On my to class I look down at the chain think my that's dirty I must remember to clean it. This evening I was on my way up to meet someone at Astor Place and felt my chain slip off my front derailleur. I was able to shift it back on but I must clean it. I ended the night by going across the Manhattan bridge at 11:30 with only a few other cyclists. I must try doing it at 1 am or so.