I was going to add that you should look to mdcc_tester for the informed science. Thanks for that.
I was thinking more about the air going between the front tyre and fork crown, I reckon a larger gap with the right shape would have a lower drag coefficient than a 1 to 4 mm gap with a blunt profile, as air doesn't like being forced into little gaps and tends to bounce about.
I was going to add that you should look to mdcc_tester for the informed science. Thanks for that.
I was thinking more about the air going between the front tyre and fork crown, I reckon a larger gap with the right shape would have a lower drag coefficient than a 1 to 4 mm gap with a blunt profile, as air doesn't like being forced into little gaps and tends to bounce about.