a friend of mine has been riding his kids' bmx bike with a coaster brake from when he was little. it's an awesome bike, but the left crankarm was bent and the handlebars were a little sketchy.

he let me drop in a new one-piece crank and pop some new handlebars on there this weekend. that bike is so much fun.

totally not helpful to you, i know, but it's related to bent cranks.