Ask a Mechanic | Avoiding Dropped Chains On a Mountain 3×9 Setup Ask a Mechanic | Avoiding Dropped Chains On a Mountain 3×9 Setup Daniel2014-03-05T15:35:35-08:00 Welcome to our Ask a Mechanic column where our expert mechanic Daniel Slusser answers Ask a Mechanic | Avoiding Dropped Chains On a Mountain 3×9 SetupDaniel2014-03-05T15:35:35-08:00