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Old 04-23-2020, 02:46 AM   #3 (permalink)
California98Civic
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Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
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Quote:
Originally Posted by JulianEdgar View Post
Versus the standard rim (wind tunnel results):
  • fully blanked - Cd change of -0.013
  • 85mm annular outer ring - Cd change of -0.012
I already noted these data points in the OP. But you get the number wrong here. The wind tunnel results for the 85mm ring were -0.009. You are mistakenly quoting the CFD number of -0.012. It's on p.248, table 18.3.
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.



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