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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 03-30-2008, 05:52 AM   #1 (permalink)
EcoMudder
 
Harpo's Avatar
 
Join Date: Mar 2008
Location: Gainesville, FL
Posts: 79

Harpo's Honda - '05 Honda Civic VP
90 day: 42.64 mpg (US)
Thanks: 0
Thanked 2 Times in 2 Posts
Air Dam and Tray (2005 Civic Sedan)

So after the easy stuff (ScanGuage, Tire Pressures, Upper Grill Block, WAI) I need to start looking at Aero Mods to compliment my progress. The first area of interest is a small air dam, replacing the 1" chin spoiler. I'm hoping to incorporate some measure of wheel fairings. I'm going to look at some wrecked equipment today, and try to find some template material (old spoliers and such).





The second area of interest is reducing rear bumper drag by closing up areas with a under tray probably with coroplast. The DS rear behind the rear wheel has some easy attachment points and can be made pretty smooth transitioning out of the wheel well.



Looking for options, ideas, and recommendations. Which will have biggest bang for my time?

__________________
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 03-30-2008, 04:39 PM   #2 (permalink)
Liberti
 
LostCause's Avatar
 
Join Date: Feb 2008
Location: California
Posts: 504

Thunderbird - '96 Ford Thunderbird
90 day: 27.75 mpg (US)
Thanks: 0
Thanked 7 Times in 7 Posts
Personally, I'd focus on the front control arms and forward. Make as smooth a radius as possible from the lower edge of the front clip to the bottom of the OEM airdam. From there, attach an undertray at least as far back as the control arms...but focus on making them smooth.

I think your biggest gain will be to fabricate some front wheel splitters and boat-tails...either out of reinforced coroplast, fiberglass, or some other stiff/cheap material. Radius the front edge and have it expand to where it ends wider than the wheel. In the future, a key addition will be front wheel skirts so you might as well set up for that. The same idea holds for the boat tails. Have them start wider then the wheel (but with radiused edges) and taper back at a 7-10 degree angle.

In the future, the next step would be to add a splitter/boat-tail to the rear wheels and extend the undertray back to the bumper. I'd also think about running full length side-skirts at this time.

Easiest mods at the moment would be to lose the side mirror, seal all gaps, and use a lighter weight oil w/ oil analyses (pretty ballsy, though). Welcome to the land of diminishing returns...

- LostCause
  Reply With Quote
Old 03-30-2008, 08:04 PM   #3 (permalink)
Future EV Owner
 
Join Date: Mar 2008
Location: Sussex Wisconsin
Posts: 674

Wannabe - '05 Honda Civic LX
90 day: 40.53 mpg (US)
Thanks: 0
Thanked 4 Times in 4 Posts
I'll watch this with interest, Harpo, since I have the exact same car (model, year, even the color). I plan to make a number of mods to my car, too. However, they must all be pretty much covert because my wife hates to have anything even slightly abnormal on the car. I want to keep the car as appealing to her has possible because she wants to make it hers when I finally buy an electric car.

My first mod will involve buying prefabricated screens to go behind all the front openings. I will cover them with something black.
__________________
  Reply With Quote
Old 03-30-2008, 09:09 PM   #4 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,035

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

MPGiata - '90 Mazda Miata
90 day: 53.56 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 58.34 mpg (US)
Thanks: 3,678
Thanked 6,488 Times in 3,362 Posts
Hey Harpo - nice to see you're already 33% above EPA combined.

I think LostCause has given some good advice there.

And... welcome, Arminius.
__________________
Latest mods: 3-cylinder Mitsubishi Mirage. EcoMods now in progress...
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 03-30-2008, 09:52 PM   #5 (permalink)
Giant Moving Eco-Wall
 
DifferentPointofView's Avatar
 
Join Date: Dec 2007
Location: The Dale, IL (or A-Dale)
Posts: 1,120

The Jeep! - '95 Jeep Grand Cherokee ZJ Laredo
90 day: 23.75 mpg (US)

The Caliber - '07 Dodge Caliber R/T
90 day: 30.6 mpg (US)

The 'Scort - '98 Ford Escort LX
Thanks: 0
Thanked 7 Times in 6 Posts
yes, welcome.

Hmm. going covert. It's all about the clear stuff
__________________


Yea.. I drive a Jeep and I'm on a fuel economy site, but you just wouldn't understand... "It's a Jeep thing!" *Jeep Wave*

Did I Use Too Many Abbreviations? Here's The Abbreviations List
  Reply With Quote
Old 03-30-2008, 10:26 PM   #6 (permalink)
Future EV Owner
 
Join Date: Mar 2008
Location: Sussex Wisconsin
Posts: 674

Wannabe - '05 Honda Civic LX
90 day: 40.53 mpg (US)
Thanks: 0
Thanked 4 Times in 4 Posts
Thanks Metro. I'm a skeptic by nature, so I'll probably move slowly before doing any mods. The easy ones will come first, however. Obviously, a Scanguage would help, but I'm just barely over 39 combined already. I really want to get 40 on the next tank. I'll get the SG this summer, I suppose.
__________________
  Reply With Quote
Old 03-31-2008, 09:42 AM   #7 (permalink)
Administrator
 
Daox's Avatar
 
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,159

CM400E - '81 Honda CM400E
90 day: 51.49 mpg (US)

Daox's Grey Prius - '04 Toyota Prius
Team Toyota
90 day: 49.53 mpg (US)

Daox's Insight - '00 Honda Insight
90 day: 64.33 mpg (US)

Swarthy - '14 Mitsubishi Mirage DE
Mitsubishi
90 day: 56.69 mpg (US)
Thanks: 2,460
Thanked 2,530 Times in 1,526 Posts
Welcome to the site Arminius. Where are you located in WI?
__________________
Current project: A better alternator delete
  Reply With Quote
Old 03-31-2008, 04:53 PM   #8 (permalink)
EcoMudder
 
Harpo's Avatar
 
Join Date: Mar 2008
Location: Gainesville, FL
Posts: 79

Harpo's Honda - '05 Honda Civic VP
90 day: 42.64 mpg (US)
Thanks: 0
Thanked 2 Times in 2 Posts
[QUOTE=MetroMPG;17006]Hey Harpo - nice to see you're already 33% above EPA combined.
QUOTE]

36.9% now. YeeHaaww. I had a return trip at 46.8mpg today after oil change to synthetic. No wind assist either. Just good IATs and steadfast MPG control.

Thanks guys!
__________________
  Reply With Quote
Old 03-31-2008, 06:31 PM   #9 (permalink)
Future EV Owner
 
Join Date: Mar 2008
Location: Sussex Wisconsin
Posts: 674

Wannabe - '05 Honda Civic LX
90 day: 40.53 mpg (US)
Thanks: 0
Thanked 4 Times in 4 Posts
Quote:
Originally Posted by Daox View Post
Welcome to the site Arminius. Where are you located in WI?
Hi Doax. I'm in Sussex. I drive to Brookfield to work.

After I get a mpg history as a reference, I plan to get a Scanguage (in June or July) and then do the same warm air engine mod that Harpo did, or something close to it.
__________________
  Reply With Quote
Old 04-01-2008, 04:52 AM   #10 (permalink)
EcoMudder
 
Harpo's Avatar
 
Join Date: Mar 2008
Location: Gainesville, FL
Posts: 79

Harpo's Honda - '05 Honda Civic VP
90 day: 42.64 mpg (US)
Thanks: 0
Thanked 2 Times in 2 Posts
Quote:
Originally Posted by Arminius View Post
I'll watch this with interest, Harpo, since I have the exact same car (model, year, even the color). I plan to make a number of mods to my car, too. However, they must all be pretty much covert because my wife hates to have anything even slightly abnormal on the car. I want to keep the car as appealing to her has possible because she wants to make it hers when I finally buy an electric car.

My first mod will involve buying prefabricated screens to go behind all the front openings. I will cover them with something black.

Tell her you'll spend 10% of the savings on a nice dinner.

Rummaging around the shop, I found some old Filter Foam I used as a hood to aircleaner seal for some custom cold air intakes a few years back. It's black, and I think I can cut it to precisely fit the upper grill. It'll certainly stop the high pressure air, but probably allow some bleed air at low speeds with fan operations. It'll look a bit more stealthy. I'll post when she's done.

__________________
  Reply With Quote
The Following User Says Thank You to Harpo For This Useful Post:
KeepingStephen (01-26-2011)
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com