Ask a Mechanic: Setting up a Chain Catcher Ask a Mechanic: Setting up a Chain Catcher Greg O'Keeffe2015-12-16T14:17:52-08:00 I'm confident that my front derailleur is set up properly but I still dropped Ask a Mechanic: Setting up a Chain CatcherGreg O'Keeffe2015-12-16T14:17:52-08:00