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Old 10-07-19, 07:55 AM
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jadocs
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You need to figure out where your saddle needs to be in terms of fore/aft in relation to the bottom bracket and how your body is balanced based on the frame geometry and your flexibility/riding style (it varies from individual to individual). Everything I'm hearing you say is adjusting fore/aft to correct a reach problem which is not what your supposed to do. Once your fore/aft is set, you tune your reach with stem length and bar height. Ideally your stem length should be between 100mm-120mm assuming your frame is the correct size. My personal opinion is 90mm is too short, it doesn't mean it's wrong YMMV. The purpose of setback seatposts in varying degrees is for people who need to move their seat back beyond a zero setback due to the geometry and desired balance point. A 25mm vs. 10mm setback is simply to ensure optimal location of the clamp on the seat rails based on how far back the rider needs to get his desired balance point. It's not to extend reach.

Last edited by jadocs; 10-07-19 at 08:05 AM.
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