Kevin Kane Posted March 22, 2011 Report Share Posted March 22, 2011 Hey Will; Can you weigh in here? At the end of last season I started experimenting with changing ratios on my Ducati 748. My set up was a 14/39 which was a fine for a short technical track like Loudon, Shannonville Fabi or Pocono East but at a big track like NJMP's Thunderbolt Circuit, I broke my cam timing sensor with the bike pinned going down the front straight causing the motor to simply quit. After replacing the sensor I decided to take up a buddy's advice and look at my gearing. I swapped out the 14/39 for a 15/38 which was a huge improvement from a top speed perspective but I couldn't quite reach my goal of a 15/36 set up because of chain length; I couldn't move the excentric any further. Not having ever modified the length of a chain before (or even know where to begin) I decided to ask an expert how to do this SAFELY. The bike came with (I believe) a D.I.D. 520 chain and a quick change sprocket holder with a set of rears ranging from 36 teeth to 40 teeth sprockets along with extra lengths of chain; I then added a 15 tooth front to the package last fall. Is this rocket science or can a novice mechanic do this and if so what tools are needed? TIA; Rain Quote Link to comment Share on other sites More sharing options...
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