gee, thanks everybody for the compliments. not the most auspicious first ride for a new ride, but still a good ride. i'm fin'ta call sram and see if they'll replace it. a derailleur shouldn't rip in half like that on the first ride no matter what. funny enough, after all the mechanicals and noises were sorted out, the bike rode real smoothly, even in singlespeed mode. i'm totally digging this bike.