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Old 06-23-2013, 04:33 PM   #135 (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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I'm glad you're still at it. I'm working on my own coast down testing and so I'd be happy to see your thoughts. I too considered testing even when there were significant winds, but I changed my mind.

Re: your chart. The yellow is with gap fillers and box and the blue is the box without the fillers? How did you calculate Cd? Because the stock Cd listing for the 1996-2000 Civic coupe was 0.32, while the hatch was something like 0.36 ... so something just does not look right, or else I am not getting it. You recorded speeds or distances and calculated Cd somehow? Did you start by assuming 0.36?
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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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