For those who fret over stuff like hub friction, may I suggest some DIY scientific research.
You'll need a friend who weights 20# or so more or less than you, a hill, and of course, a "slow" wheel, and a nice loose one.
Take the two bikes to the top of the hill, and do a coast race down. To be fair, each do their best aero tuck. Repeat the test switching bikes. Odds are the same person will win. If you have a number of friends you can repeat this until you find two matched closely enough that the bike actually determines the outcome.
Friends and I did this years (decades) ago and managed to find 2 close enough that 10psi tire pressure made the difference, but we never found two close enough for the hubs to determine the winner.
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Last edited by FBinNY; 06-12-24 at 11:30 PM.