Only very loosely related, but this is one of the cooler bicycle hacks I've heard about: http://www.sheldonbrown.com/bichain-fixed-free.html http://www.sheldonb

Only very loosely related, but this is one of the cooler bicycle hacks I've heard about: http://www.sheldonbrown.com/bichain-fixed-free.html http://www.sheldonbrown.com/bichain-fixed-free.html.