Ask a Mechanic | Adjusting Campy Rear Derailleurs Ask a Mechanic | Adjusting Campy Rear Derailleurs Daniel2015-12-16T16:51:37-08:00 Question: Nelson wants to know: You’ve done a lot of videos on how to Ask a Mechanic | Adjusting Campy Rear DerailleursDaniel2015-12-16T16:51:37-08:00