Ask a Mechanic | SRAM/Shimano Road Derailleur Compatibility & Big Road Cassettes Ask a Mechanic | SRAM/Shimano Road Derailleur Compatibility & Big Road Cassettes Daniel2014-03-05T15:57:28-08:00 Welcome to our Ask a Mechanic column where our expert mechanic Daniel Slusser answers Ask a Mechanic | SRAM/Shimano Road Derailleur Compatibility & Big Road CassettesDaniel2014-03-05T15:57:28-08:00