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Old 06-01-2011, 11:12 PM   #125 (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 aerohead View Post
California,does the fabrication in the thumbnail photo follow your red line,or fall off as in the photo?
Also,do you think the area on either side of the spoiler,between the end-plates and sides of car is in turbulence?
You may have created two longitudinal vortices above the tailights as the spoiler does not extend out to that region,and the downwash off the roof is not supported there with the existing voids.
I've never seen a rear spoiler which wasn't full width.It's hard to tell everything from photos.
Thanks for chiming-in, aerohead. This latest version follows the red line. The previous fairly flat spoiler is in the photo. It showed a 0.60mpg gain. This one showed a 1.35mpg loss. Some of the photos of Civics with spoilers (racing cars) others posted here were contained to the trunk profile. It was a source of inspiration. I think these may be more about generating downforce, however, no? As for turbulance between the endplates and the tail-lights, I have to admit I simply don't know. I'm thinking of something smaller now. Foils really. Street legal and all. What do you think?
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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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