01-19-2012, 11:38 PM
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#1 (permalink)
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EcoModding Lurker
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FlowIllustrator for 2002 civic
Did some screen captures with flow illustrator to see the impact of the following items:
- Front lip
-Rear lip
- Oem spoiler
- OEM Hybrid spoiler
Can you help me decide on which combo is the best for reduced CD. Really appreciate it.
No front lip and but rear lip
Front and rear lip
Front lip and OEM spoiler
Front lip +rear lip + hybrid spoiler
Full stock
real pictures of:
OEM spoiler and rear lip
OEM hybrid spoiler
Last edited by civic_has; 01-19-2012 at 11:48 PM..
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01-20-2012, 12:19 AM
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#2 (permalink)
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Master EcoModder
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He gave me a dollar. A blood-soaked dollar.
I cannot get the spot out but it's okay; It still works in the store
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01-20-2012, 02:28 AM
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#3 (permalink)
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EcoModding Lurker
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Sorry about that, Noob mistake. Posted new pictures with proper wind velocity on your thread.
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01-20-2012, 02:38 AM
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#4 (permalink)
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Master EcoModder
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No worries man, that was just a note for the mods 
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He gave me a dollar. A blood-soaked dollar.
I cannot get the spot out but it's okay; It still works in the store
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01-21-2012, 02:02 AM
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#5 (permalink)
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Ultimate Fail
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Quote:
Originally Posted by asd123
There is a New York Asian Escort wholeness about the person who has come to terms with his limitations, who New York Escort has been brave enough to let go of his unrealistic dreams and not feel like a failure for doing so. There is a wholeness New York Asian Escorts about the man or woman who has learned that he or she is New York Escorts to go through a tragedy and survive, he or she can lose someone and still |
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Mods : looks like we have some junkmail to delete eh ?
Please delete this post as well .
Last edited by Cd; 01-21-2012 at 02:16 AM..
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01-21-2012, 07:31 AM
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#6 (permalink)
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Cyborg ECU
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Quote:
Originally Posted by civic_has
Can you help me decide on which combo is the best for reduced CD. Really appreciate it.
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Back to your original question... I honestly don't see much difference between these photos that seems like it would make much of a difference, which may just be my inexperience. Can someone explain whether and if any of the OP photos reveals a better outcome and what the difference in Cd might be?
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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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01-21-2012, 02:12 PM
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#7 (permalink)
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Master EcoModder
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It's been said before, but the Flow Illustrator is not an aero testing tool. To know which works and which does not you need real world data. That said it appears the OEM spoiler pushes the air closest to the optimal profile (template). Do a tuft test on the rear window with and without the spoiler (or lips or whatever you are considering). Whichever one keeps the tufts down farthest back on the window is the one you want to use.
As for the front, get a spoiler that will go down only as much as the lowest chassis component. If possible, make a belly pan.
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He gave me a dollar. A blood-soaked dollar.
I cannot get the spot out but it's okay; It still works in the store
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01-21-2012, 03:22 PM
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#8 (permalink)
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combos
None of you combos would have as low a drag compared to a conversion to a K-form roofline.
If you're absolutely attached to the notchback form,then you need to look at Hucho's book section on passenger cars,specifically the Figs. 4.63,64,& 65(2nd edition pages 156-7)
If you're looking for really low drag potential the Civics roof will need to look like the Mercedes-Benz 'Boxfish,' concept car.
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