wassertreter wrote:WMW: if you could share how you come to that conclusion (edit: re Heine's testing), that would be great. It seems people are either strongly following, or rejecting Jan Heine's work, but I've never seen the critique being substantiated beyond "one doesn't test like that". I'm an engineer myself, but not in a mechanical field, and interested to understand the issues at hand better.
Jan did coast down tests on a full bicycle... on different days. Anyone who has looked at the physics knows that aero drag dominates the test he did, and slight changes in wind or position will swamp the small differences between tubes... or tires for that matter.