What do you think you felt?
Responsiveness of the bike/rear end increased a lot. This was on a Specialized AWOL with huge S-shaped chainstays.
Did you do back to back testing with 24mm and 30mm spindle chainsets then? Struggling at present to see how the spindle diameter could affect anything other than crank stiffness, and even then not any appreciable degree.
@Jaap started
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What do you think you felt?