Go Back   EcoModder Forum > EcoModding > Aerodynamics
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 08-06-2008, 09:43 PM   #1 (permalink)
Civic 4 Life
 
KJSatz's Avatar
 
Join Date: Jun 2008
Location: USA
Posts: 229

Civics Lesson - '08 Honda Civic LX
Team Honda
90 day: 40.53 mpg (US)
Thanks: 0
Thanked 2 Times in 1 Post
Aero differences between my 2008 Civic LX and the Hybrid...mod inspiration?

One day on the freeway a Civic Hybrid passed me in my LX Civic. We were both the latest bodystyle, 06-08. I noticed that it looked slightly different, though. Now I checked Honda's website, and they have two photos from the same angle of a non-hybrid (it's the EX but whatever) and the hybrid.

Non-hybrid
http://automobiles.honda.com/images/...y/gal_lg12.jpg

Hybrid
http://automobiles.honda.com/images/...y/gal_lg10.jpg

The differences are the antenna and something on the very back of the trunk. I am wondering if anyone can identify if/why these features are aerodynamically superior, and if either of those ideas could be applied to my Civic. Thanks!

__________________
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 08-06-2008, 10:44 PM   #2 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,527

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
Thanks: 4,078
Thanked 6,976 Times in 3,612 Posts
The wheels and deck lid spoiler are the main aero differences I can see.

Both features are superior vs. the "regular" car.

Honda Canada in fact added that spoiler to all "regular" 5-speed Civics for '08 as one of several measures to marginally improve the car's fuel economy to earn a government efficiency rebate.

Source: CTV.ca
__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 08-06-2008, 10:57 PM   #3 (permalink)
Civic 4 Life
 
KJSatz's Avatar
 
Join Date: Jun 2008
Location: USA
Posts: 229

Civics Lesson - '08 Honda Civic LX
Team Honda
90 day: 40.53 mpg (US)
Thanks: 0
Thanked 2 Times in 1 Post
Oh and of course the wheels! My LX has pretty flat hub caps (plastic covers on steel wheels, unlike that photo of the EX), though they certainly aren't the hybrid wheels.

That story about Honda Canada is very interesting!

Does the external antenna on the hybrid make a difference? I think I remember seeing an image on these forums similar to that but with a lot of smaller fin type things alongside it. Vortex generator? I don't think I'm making sense.
__________________
  Reply With Quote
Old 08-06-2008, 11:13 PM   #4 (permalink)
EcoModding Apprentice
 
Join Date: Jul 2008
Location: Potsdam, NY
Posts: 136

The Vue - '03 Saturn Vue
90 day: 25.34 mpg (US)
Thanks: 0
Thanked 1 Time in 1 Post
the hybrid has bigger side mirrors, and it also looks like it has a lower front lip. The external antenna on the hybrid probly does act like a vortex generator, however ther's only one adn it wouldn't have a huge impact on the cars aero.

as far as that deck spoiler... id rather see something that extends back from the top of the trunk than that little lip for aero. airflow's probly turbulent at that point anyway, the spoiler would probly just increase drag.
__________________


  Reply With Quote
Old 08-07-2008, 12:50 PM   #5 (permalink)
Mechanical Engineer
 
Join Date: Jun 2008
Location: Richmond, VA
Posts: 190

The Truck - '02 Dodge Ram 1500 SLT Sport
90 day: 13.32 mpg (US)

The Van 2 - '06 Honda Odyssey EX
90 day: 20.56 mpg (US)

GoKart - '14 Hyundai Elantra GT base 6MT
90 day: 30.46 mpg (US)

Godzilla - '21 Ford F350 XL
90 day: 8.69 mpg (US)
Thanks: 0
Thanked 7 Times in 6 Posts
If Honda bothered to design and place this item on the Hybrid you can bet it wasn't because it increased drag.

The deck lid spoiler could very well reduce drag if the flow on the normal car separates somewhere up the deck lid. The lip spoiler will help the flow stay attached (not laminar, "attached" turbulent flow) and may even generate a vortex (sharp edges are better at this than rounded ones) to reduce wake area behind the trunk.

The mirrors on the hybrid aren't just larger they're shaped differently. I'm curious as to why the mirrors on the hybrid would be larger but the shape looks like it makes sense. Most of the "aero" mirrors on high-end cars these days (BMWs) have a design more similar to the HCH than the EX where the leading face of the mirror has a split line with a downward-facing angle below and an upward-facing angle above, and the split line on the HCH/BMW is about 60-70% above the bottom edge of the mirror. On the Civic EX it looks like the split line is dead center to below-center.

Good eye re: lower front lip Tourigjm...I looked at the photos before reading the thread and noticed that myself. Not only a lower lip on the hybrid but looks like it flares further out to the side of the car in front of the tire.
__________________
  Reply With Quote
Old 08-07-2008, 01:36 PM   #6 (permalink)
ALS
EcoModding Apprentice
 
Join Date: Jun 2008
Location: Pittsburgh
Posts: 113
Thanks: 0
Thanked 22 Times in 16 Posts
If I owned an EX I would install the rear spoiler and Hybrid wheels to squeeze out a few MPG on the highway mileage. The front wheel spoilers and mirrors would help a little but I feel the other two upgrades would give you the best bang for the budget. The more I look at the pictures the front spoiler looks the same and instead it looks like there are small individual tire spoilers installed in front of the wheels.
  Reply With Quote
Old 05-23-2013, 01:56 PM   #7 (permalink)
EcoModding Lurker
 
Join Date: May 2013
Location: Dallas
Posts: 15

Charlie - '10 Honda Civic LX
Team Honda
90 day: 40.76 mpg (US)
Thanks: 2
Thanked 1 Time in 1 Post
I'm considering the hybrid rims, they are 15" so that means new tires will have to be purchased as well. I'm not sure where to find the hybrid rims other than ebay or a few online sites. They all seem very expensive. $125 + each. I was thinking more around $50 each used... any ideas where to find them? As for the spoiler goes, I'm not sure how much of a boost that would actually give but I am considering it. I agree with what was previously mentioned, Honda wouldn't have put it on there for no reason.
  Reply With Quote
Old 05-23-2013, 03:54 PM   #8 (permalink)
ALS
EcoModding Apprentice
 
Join Date: Jun 2008
Location: Pittsburgh
Posts: 113
Thanks: 0
Thanked 22 Times in 16 Posts
I checked on Car-part.com a salvage yard search engine and found several hybrid wheels in Texas. With TPMS $100 each, with out TPMS $100-$125 each.
  Reply With Quote
The Following User Says Thank You to ALS For This Useful Post:
strikes (05-23-2013)
Old 05-24-2013, 12:23 PM   #9 (permalink)
Not Doug
 
Xist's Avatar
 
Join Date: Jun 2012
Location: Show Low, AZ
Posts: 12,230

Chorizo - '00 Honda Civic HX, baby! :D
90 day: 35.35 mpg (US)

Mid-Life Crisis Fighter - '99 Honda Accord LX
90 day: 34.2 mpg (US)

Gramps - '04 Toyota Camry LE
90 day: 35.39 mpg (US)

Don't hit me bro - '05 Toyota Camry LE
90 day: 30.49 mpg (US)
Thanks: 7,254
Thanked 2,229 Times in 1,719 Posts
Quote:
Originally Posted by ALS View Post
I checked on Car-part.com a salvage yard search engine and found several hybrid wheels in Texas. With TPMS $100 each, with out TPMS $100-$125 each.
I see three wheels a few miles from here for a hundred each. Which three wheels should I replace?
  Reply With Quote
Old 05-24-2013, 12:42 PM   #10 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,527

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
Thanks: 4,078
Thanked 6,976 Times in 3,612 Posts
For anyone looking to spending hundreds to get light/aero OEM wheels ... Hopefully you're doing this primarily because you like the look of the wheels and you think that's worth spending money for.

Because it likely doesn't make sense to do this as a way to save money (ie. recover your cost). Have you done the math?

__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Reply  Post New Thread






Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com